Ram 3500 · Model year 2021
2021 Ram 3500 specs, maintenance & manuals
Owner and shopper reference for the 2021 Ram 3500, built from Stellantis and Mopar data: the factory spec sheet, the maintenance schedule, fluid capacities and 14 manufacturer publications, plus a tow rating of up to 37,100 lb.
- Max towing
- 37,100 lb
- Horsepower
- 370–420 hp
- Recalls
- 9
- Schedule covers
- 150k miles
What changed for the 2021 Ram 3500
What the manufacturer's data shows changed on the 2021 Ram 3500 compared with 2020.
- New option package: Limited Night Edition Package.
- Engines: 6.4-liter HEMI® V-8 is new.
- Engines no longer listed: 6.4-liter HEMI V-8.
- The 6.7-liter Cummins Turbo Diesel I-6 (3500 High Output) is rated at 420 hp, up from 400 hp in 2020.
- The 6.7-liter Cummins Turbo Diesel I-6 (3500 High Output) makes 1,075 lb-ft of torque, up from 1,000 lb-ft.
- Maximum tow rating rose from 35,100 lb to 37,100 lb.
Compared automatically from the manufacturer's trim feature charts, specification sheets, towing guides and the EPA's fuel-economy data for 2020 and 2021. Equipment varies by trim and market; confirm details on a specific vehicle.
2021 Ram 3500 specs & features
Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2021 specification sheet.
General information3 specs
- Vehicle Type
- Regular Cab, Crew Cab and Mega Cab: 4x2, 4x4
- Assembly Plant
- Saltillo Truck Assembly Plant, Coahuila, Mexico
- EPA Vehicle Class
- Standard Pickup
Body/chassis2 specs
| 4x2 | 4x4 | |
|---|---|---|
| Layout | Longitudinal, front engine | Longitudinal, front engine, transfer case |
| Construction | Ladder-type frame, steel cab, double-wall steel pickup box | Ladder-type frame, steel cab, double-wall steel pickup box |
Engines42 specs
| 6.4-liter HEMI® V-8 | |
| Type and Description | 90-degree gasoline V-8 with variable cam timing |
| Displacement | 392 cu. in. (6,417 cu. cm) |
| Bore X Stroke | 4.09 X 3.72 (103.9 X 94.6) |
| Valve System | Pushrod-operated overhead valves, 16 valves, eight deactivating and eight hydraulic lifters, all with roller followers |
| Fuel Injection | Sequential, multiport, electronic, returnless |
| Construction | Deep-skirt cast-iron block with cross-bolted main bearing caps, 356 aluminum cylinder heads with hemispherical combustion chambers |
| Compression Ratio | 10.0:1 |
| Power | 410 hp (306 Kw) @ 5,600 RPM |
| Torque | 429 lb.-ft. (582 N•M) at 4,000 RPM |
| Maximum Engine Speed | 5,800 RPM limited |
| Fuel Requirement | Unleaded regular, 87 octane |
| Oil Capacity | 7.0 quarts (6.6 liters) |
| Coolant Capacity | 16.6 quarts (15.75 liters) |
| Emission Control | Three-way catalytic converters, heated oxygen sensors, cooled electronic exhaust-gas recirculation (EGR) and individual cylinder fuel control |
| 6.7-liter Cummins Turbo Diesel I-6 (2500/3500 Standard Output) | |
| Type and Description | Inline six cylinder, turbocharged, intercooled diesel |
| Displacement | 408 cu. in. (6,690 cu. cm) |
| Bore X Stroke | 4.21 X 4.88 (107 X 124) |
| Valve System | Pushrod-operated overhead valves, 24 valves, hydraulic lifters |
| Fuel Injection | Electronic high-pressure common rail |
| Construction | Compacted graphite iron (CGI) block cast-iron head |
| Compression Ratio | 19.0:1 |
| Power | 370 hp (276 Kw) @ 2,800 RPM (68RFE automatic transmission) |
| Torque | 850 lb.-ft. (1,152 N•M) @ 1,700 RPM |
| Maximum High-Idle Engine Speed | 3,200 RPM |
| Fuel Requirement | Ultra-low sulfur diesel |
| Oil Capacity | 12.0 quarts (11.3 liters) with filter |
| Coolant Capacity | 23.8 quarts (22.50 liters) |
| Emission Controls | Selective catalytic reduction (SCR) |
| 6.7-liter Cummins Turbo Diesel I-6 (3500 High Output) | |
| Type And Description | Inline six cylinder, turbocharged, intercooled diesel |
| Displacement | 408 cu. in. (6,690 cu. cm) |
| Bore X Stroke | 4.21 X 4.88 (107 X 124) |
| Valve System | Pushrod-operated overhead valves, 24 valves, hydraulic lifters |
| Fuel Injection | Electronic high-pressure common rail |
| Construction | Compacted graphite iron (CGI) block cast-iron head |
| Compression Ratio | 16.2:1 |
| Power | 420 hp (313 Kw) @ 2,800 RPM (Aisin automatic transmission) |
| Torque | 1,075 lb.-ft. (1,458 N•M) @ 1,800 RPM |
| Maximum High-Idle Engine Speed | 3,200 RPM |
| Fuel Requirement | Ultra-low sulfur diesel |
| Oil Capacity | 12.0 quarts (11.3 liters) with filter |
| Coolant Capacity | 23.8 quarts (22.50 liters) |
| Emission Controls | Selective catalytic reduction (SCR) |
Transmissions35 specs
| Aisin AS69RC — automatic six-speed (3500 High Output) | |
| Availability | 6.7-liter diesel high output |
| Description | Three planetary gear sets, full electronic control, electronically controlled converter clutch |
| Axle Ratios | 3.73 (SRW and DRW), 4.10 (DRW only) |
| ZF 8HP75 — automatic eight-speed | |
| Availability | 6.4-liter HEMI V-8 |
| Description | Adaptive electronic control, automatic or Electronic Range Select (ERS) manual control. Five clutch-pack design with only two open clutches in any gear. Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gear |
| Axle Gear Ratios | 3.73, 4.10 |
| 68RFE — automatic six-speed | |
| Availability | 6.7-liter diesel (standard output 2500 and 3500) |
| Description | Three planetary gearsets, one overrunning clutch, full electronic control, and electronically controlled converter clutch |
| Axle Ratios | 3.73 (SRW and DRW), 4.10 (DRW) |
| Gear ratios | Aisin AS69RC — automatic six-speed (3500 High Output) | ZF 8HP75 — automatic eight-speed | 68RFE — automatic six-speed |
|---|---|---|---|
| 1st | 3.75 | 4.71 | 3.23 |
| 2nd | 2.0 | 3.14 | 1.84 |
| 3rd | 1.34 | 2.10 | 1.41 |
| 4th | 1.0 | 1.67 | 1.0 |
| 5th | 0.77 | 1.29 | 0.82 |
| 6th | 0.63 | 1.00 | 0.63 |
| 7th | — | 0.84 | — |
| 8th | — | 0.67 | — |
| Reverse | 3.54 | 3.30 | 4.44 |
— not listed or not applicable
Transfer case5 specs
| BW 44-46, BW 44-47 | BW 44-48 | |
|---|---|---|
| Availability | Optional on 6.7-liter diesel and 6.4-liter HEMI V-8 | 6.7-liter diesel high output |
| Type | Part-time – BW 44-47 manual shift and BW 44-46 electric shift | 44-48 part-time with electric shift, part-time manual shift |
| Operating Modes | 2WD; 4WD High; Neutral; 4WD Low | 2WD; 4WD High; Neutral; 4WD Low |
| Low-Range Ratio | 2.64 | 2.64 |
| Center Differential | None | None |
Axles3 specs
- Front (4x4)
- AAM 9.25-in. beam front axle with center disconnect (locking differentials on Power Wagon)
- Rear
- AAM 11.5-in. beam rear axle (2500 and 3500 limited-slip and locking differentials on Power Wagon)
- Rear
- AAM 12.0-in. beam rear axle (3500 Max Tow)
Electrical system6 specs
| Alternator | |
| Rating | 180-amp included with 6.4-liter HEMI V-8 and 6.7-liter diesel |
| Rating | 220-amp included with 6.7-liter Laramie, Longhorn and Limited |
| Rating | Dual (220 and 160) optional on 6.4-liter HEMI V-8 |
| Rating | Dual 220-amp optional on 6.7-liter diesel |
| Battery | |
| Description | Group 65, maintenance-free, 730 CCA on 6.4-liter HEMI V-8 |
| Description | Dual Group 65, maintenance-free, 730 CCA on 6.7-liter diesel |
Suspension 25002 specs
| 4x2 | 4x4 | |
|---|---|---|
| Front | Three-link with track bar, coil springs, stabilizer bar, solid axle | Three-link with track bar, coil springs, stabilizer bar, solid axle, disconnecting sway bar (Power Wagon only) |
| Rear | Five-link with track bar, coil springs, stabilizer bar, solid axle | Five-link with track bar, coil springs, stabilizer bar, solid axle (optional air bags) |
Suspension 35002 specs
| 4x2 | 4x4 | |
|---|---|---|
| Front | Three-link with track bar, coil springs, stabilizer bar, solid axle | Three-link with track bar, coil springs, stabilizer bar, solid axle |
| Rear | Two-stage longitudinal leaf (optional supplemental air bags) solid axle | Two-stage longitudinal leaf (optional supplemental air bags) solid axle |
Brakes4 specs
| Front | |
| Size and Type | 14.17 X 1.54 (359.9 X 39.1) disc with twin-piston pin-slider caliper and ABS |
| Rear | |
| Size and Type | 14.09 X 1.34 (357.9 X 34.0) disc with twin-piston pin-slider caliper and ABS |
| Power-Assist Type | Dual-rate, Tandem Diaphragm Vacuum (2500 gas) |
| Power-Assist Type | Hydro-boost (2500 diesel and all 3500) |
Air bags3 specs
- Regular Cab
- 6
- Crew Cab
- 6
- Mega Cab
- 6
Steering1 spec
- Power Assist
- Hydraulic Assist
Cargo box6 specs
| 6-ft. 4-in. (Crew or Mega) | 8-ft. (Regular or Crew) | |
|---|---|---|
| SAE Volume, cu. ft. (cu. m) | 57.5 (1.6) | 74.7 (2.1) |
| Length at Floor, Tailgate Closed | 76.3 (1,938.5) | 98.3 (2,496.5) |
| Cargo Width | 66.4 (1,686.9) | 66.4 (1,686.9) |
| Distance Between Wheelhouses | 51 (1,295.4) | 51 (1,295.4) |
| Depth | 20.1 (511.1) | 20.2 (513.0) |
| Tailgate Opening Width | 60.4 (1,535.3) | 60.4 (1,535.3) |
Exterior dimensions130 specs
| 4x2 | 4x4 | |
|---|---|---|
| Regular Cab 140.5-in. WB, 8-ft. box (2500) | ||
| Wheelbase | 140.2 (3,560) | 140.2 (3,560) |
| Track Width – Front | 68.7 (1,745) | 68.7 (1,745) |
| Track Width – Rear | 68.1 (1,729) | 68.1 (1,729) |
| Overall Length | 232 (5,892) | 232 (5,892) |
| Overall Width @ SgRp Front | 83.5 (2,120) | 83.5 (2,120) |
| Overall Height | 78 (1,981) | 80.2 (2,037) |
| Ground Clearance | ||
| Suspension or Axle to Ground – Front | 7.3 (184) | 9.3 (237) |
| Suspension or Axle to Ground – Rear | 8.4 (212) | 8.5 (217) |
| Approach Angle (Degrees) | 18.8 | 22.8 |
| Ramp Breakover Angle (Degrees) | 20.8 | 23.9 |
| Departure Angle (Degrees) | 22.9 | 29.9 |
| Ground Clearance | 13 (332) | 13.1 (333) |
| Turning Diameter | 45.4 (13.8) | 45.5 (13.9) |
| Crew Cab 149.5-in. WB, 6-ft. 4-in. box (2500) | ||
| Wheelbase | 149 (3,785) | 149 (3,785) |
| Track Width – Front | 68.7 (1,745) | 68.7 (1,745) |
| Track Width – Rear | 68.1 (1,729) | 68.1 (1,729) |
| Overall Length | 238.8 (6,066) | 238.8 (6,067) |
| Overall Width @ SgRp Front | 83.5 (2,120) | 83.5 (2,120) |
| Overall Height | 78.2 (1,987) | 80.2 (2,037) |
| Suspension or Axle to Ground – Front | 7.4 (188) | 9.3 (236) |
| Suspension or Axle to Ground – Rear | 8.5 (216) | 8.5 (217) |
| Approach Angle (Degrees) | 18.8 | 22.9 |
| Ramp Breakover Angle (Degrees) | 20.3 | 23.9 |
| Departure Angle (Degrees) | 23.6 | 25.8 |
| Ground Clearance | 11.1 (281) | 13.1 (333) |
| Turning Diameter | 14.6 (47.9) | 14.6 (47.9) |
| Crew Cab 169.5-in. WB, 8-ft. box (2500) | ||
| Wheelbase | 169 (4,293) | 169 (4,293) |
| Track Width – Front | 68.7 (1,734.8) | 68.7 (1,745) |
| Track Width – Rear | 68.1 (1,729) | 68.1 (1,729) |
| Overall Length | 260.8 (6,626) | 260.8 (6,626) |
| Overall Width @ SgRp Front | 83.5 (2,120) | 83.5 (2,120) |
| Overall Height | 78.1 (1,983) | 80.1 (2,035) |
| Suspension or Axle to Ground – Front | 7.3 (185) | 9.4 (237) |
| Suspension or Axle to Ground – Rear | 9.9 (253) | 8.6 (218) |
| Approach Angle (Degrees) | 18.7 | 23.2 |
| Ramp Breakover Angle (Degrees) | 19.1 | 22.7 |
| Departure Angle (Degrees) | 22.5 | 24.7 |
| Ground Clearance | 11.1 (282) | 13.1 (334) |
| Turning Diameter | 16.3 (53.5) | 16.3 (53.5) |
| Power Wagon Crew Cab 149.3-in. WB, 6-ft. 4-in. box | ||
| Wheelbase | — | 149.3 (3,792) |
| Track Width – Front | — | 68.7 (1,745) |
| Track Width – Rear | — | 68.1 (1,729) |
| Overall Length | — | 238.8 (6,067) |
| Overall Width @ SgRp Front | — | 83.4 (2,119) |
| Overall Height | — | 80.9 (2,054) |
| Suspension or Axle to Ground – Front | — | 8.3 (210) |
| Suspension or Axle to Ground – Rear | — | 8.3 (210) |
| Approach Angle (Degrees) | — | 29.4 |
| Ramp Breakover Angle (Degrees) | — | 22 |
| Departure Angle (Degrees) | — | 26 |
| Ground Clearance | — | 14.2 (360) |
| Turning Diameter | — | 14.7 (48.2) |
| Mega Cab 160.5-in. WB, 6-ft. 4-in. box (2500) | ||
| Wheelbase | — | 160.4 (4,074) |
| Track Width – Front | — | 68.7 (1,745) |
| Track Width – Rear | — | 68.1 (1,729) |
| Overall Length | — | 249.9 (6,348) |
| Overall Width @ SgRp Front | — | 83.5 (2,120) |
| Overall Height | — | 80.1 (2,036) |
| Suspension or Axle to Ground – Front | — | 9.4 (238) |
| Suspension or Axle to Ground – Rear | — | 8.5 (217) |
| Approach Angle (Degrees) | — | 23.3 |
| Ramp Breakover Angle (Degrees) | — | 23.2 |
| Departure Angle (Degrees) | — | 25.7 |
| Ground Clearance | — | 13.1 (334) |
| Turning Diameter | — | 15.6 (51.2) |
| Regular Cab 140.5-in. WB, 8-ft. box (3500) | ||
| Wheelbase | 140.2 (3,560) | 140.2 (3,560) |
| Track Width – Front | 67.7 (1,719) | 67.7 (1,719) |
| Track Width – Front (DRW) | 69.6 (1,769) DRW | 69.6 (1,769) DRW |
| Track Width – Rear | 67.1 (1,703) | 67.1 (1,703) |
| Track Width – Rear (DRW) | 75.9 (1,927) DRW | 75.9 (1,927) DRW |
| Overall Length | 232 (5,892) | 232 (5,892) |
| Overall Width @ SgRp Front | 83.5 (2,120) | 83.5 (2,120) |
| Overall Width @ SgRp Front (DRW) | 96.5 (2,450) DRW | 96.5 (2,450) DRW |
| Overall Height | 77.8 (1,976) | 79.5 (2,019) |
| Suspension or Axle to Ground – Front | 7.4 (188) | 9.3 (237) |
| Suspension or Axle to Ground – Front (DRW) | 6.6 (168) DRW | 8.5 (216) DRW |
| Suspension or Axle to Ground – Rear | 7.9 (209) | 8.5 (217) |
| Suspension or Axle to Ground – Rear (DRW) | 8.2 (208) DRW | 8.4 (213) DRW |
| Approach Angle (Degrees) | 18.2 | 23.2 |
| Approach Angle (Degrees) (DRW) | 16.6 DRW | 20.6 DRW |
| Ramp Breakover Angle (Degrees) | 21.8 | 25.2 |
| Ramp Breakover Angle (Degrees) (DRW) | 19.7 DRW | 23.2 DRW |
| Departure Angle (Degrees) | 25.4 | 25.2 |
| Departure Angle (Degrees) (DRW) | 23.6 DRW | 24.4 DRW |
| Ground Clearance | 11.2 (286) | 13.3 (338) |
| Ground Clearance (DRW) | 10.6 (269) DRW | 12.4 (314) DRW |
| Turning Diameter | 13.8 (45.4) | 13.9 (45.5) |
| Crew Cab 169.5-in. WB, 8-ft. box (3500) | ||
| Wheelbase | 169.1 (4,294) | 169.3 (4,300) |
| Track Width – Front | 67.7 (1,719) | 67.7 (1,719) |
| Track Width – Front (DRW) | 69.6 (1,769) DRW | 69.6 (1,769) DRW |
| Track Width – Rear | 67.1 (1,703) | 67.1 (1,703) |
| Track Width – Rear (DRW) | 75.9 (1,927) DRW | 75.9 (1,927) DRW |
| Overall Length | 260.8 (6,626) | 260.8 (6,626) |
| Overall Width @ SgRp Front | 83.5 (2,120) | 83.5 (2,120) |
| Overall Width @ SgRp Front (DRW) | 96.5 (2,450) DRW | 96.5 (2,450) DRW |
| Overall Height | 78.4 (1,990) | 78.4 (1,990) |
| Overall Height (DRW) | 77.1 (1,959) DRW | 79.3 (2,015) DRW |
| Suspension or Axle to Ground – Front | 7.3 (186) | 7.3 (186) |
| Suspension or Axle to Ground – Front (DRW) | 6.4 (162) DRW | 8.4 (214) DRW |
| Suspension or Axle to Ground – Rear | 9.0 (228) | 9.0 (228) |
| Suspension or Axle to Ground – Rear (DRW) | 6.4 (162) DRW | 9.3 (236) DRW |
| Approach Angle (Degrees) | 18.3 | 23.3 |
| Approach Angle (Degrees) (DRW) | 16.9 DRW | 20.6 DRW |
| Ramp Breakover Angle (Degrees) | 19.5 | 22.4 |
| Ramp Breakover Angle (Degrees) (DRW) | 17.3 DRW | 21.3 DRW |
| Departure Angle (Degrees) | 24.2 | 23.5 |
| Departure Angle (Degrees) (DRW) | 21.2 DRW | 24.2 DRW |
| Ground Clearance | 11.2 (285) | 11.5 (290) |
| Ground Clearance (DRW) | 10.2 (260) DRW | 12.3 (312) DRW |
| Turning Diameter | 16.3 (53.6) | 16.4 (53.7) |
| Mega Cab 160.5-in. WB, 6-ft. 4-in. box (3500) | ||
| Wheelbase | — | 160.4 (4,074) |
| Track Width – Front | — | 67.7 (1,719) |
| Track Width – Front (DRW) | — | 69.6 (1,769) DRW |
| Track Width – Rear | — | 67.1 (1,704) |
| Track Width – Rear (DRW) | — | 75.9 (1,927) DRW |
| Overall Length | — | 249.9 (6,348) |
| Overall Width @ SgRp Front | — | 83.5 (1,994) |
| Overall Width @ SgRp Front (DRW) | — | 96.5 (2,450) DRW |
| Overall Height | — | 78.5 (2,036) |
| Overall Height (DRW) | — | 78.9 (2,004) DRW |
| Suspension or Axle to Ground – Front | — | 7.3 (187) |
| Suspension or Axle to Ground – Front (DRW) | — | 8.4 (214) DRW |
| Suspension or Axle to Ground – Rear | — | 8.3 (210) |
| Suspension or Axle to Ground – Rear (DRW) | — | 6.8 (174) DRW |
| Approach Angle (Degrees) | — | 18.5 |
| Approach Angle (Degrees) (DRW) | — | 21.7 DRW |
| Ramp Breakover Angle (Degrees) | — | 20.3 |
| Ramp Breakover Angle (Degrees) (DRW) | — | 21.5 DRW |
| Departure Angle (Degrees) | — | 25.7 |
| Departure Angle (Degrees) (DRW) | — | 23.1 DRW |
Rows marked (DRW) are the dual-rear-wheel values printed on a second line under the same label.— not listed or not applicable
Interior dimensions10 specs
| Regular Cab | Crew Cab | Mega Cab | |
|---|---|---|---|
| accommodations and front | |||
| Model | — | — | — |
| Seating Capacity, F/R | |||
| Seating | 3/0 or 2/0 | 3/3 or 2/3 | 3/3 or 2/3 |
| Headroom | 39.8 (1,011) | 40.9 (1,038) | 40.9 (1,038) |
| Legroom | 40.9 (1,040) | 40.9 (1,040) | 40.9 (1,040) |
| Shoulder Room | 65.9 (1,675) | 65.9 (1,675) | 65.9 (1,675) |
| Hip Room | 62.9 (1,598) | 62.9 (1,598) | 62.9 (1,598) |
| rear | |||
| Headroom | — | 39.8 (1,010) | 40.3 (1,023) |
| Legroom | — | 40.2 (1,022) | 43.1 (1,096) |
| Shoulder Room | — | 65.6 (1,666) | 65.6 (1,667) |
| Hip Room | — | 62.7 (1,593) | 62.8 (1,595) |
— not listed or not applicable
Interior volume2 specs
| Regular Cab | Crew Cab | Mega Cab | |
|---|---|---|---|
| Front – cu. ft. (cu. m) | 62.5 (1.8) | 63.9 (1.8) | 63.9 (1.8) |
| Rear – cu. ft. (cu. m) | — | 60.7 (1.7) | 66 (1.9) |
— not listed or not applicable
Source: 2021 Ram Heavy Duty Specifications (Stellantis media site).
Which equipment is standard, optional or part of a package on each trim, from the manufacturer's 2021 feature availability guide.
Showing 59 of 72 features · swipe for more trims
StandardOptionalPart of a packageNot availableEither, depending on configuration
| Feature | Tradesman | Big Horn/Lone Star | Power Wagon | Laramie | Laramie Longhorn | Limited |
|---|---|---|---|---|---|---|
| Configuration | ||||||
| Body ModelRegular Cab 8-ft. box — 169.1-in. wheelbase | Std | Std | N/A | N/A | N/A | N/A |
| Crew Cab 6-ft. 4-in. box — 149.1-in. wheelbase | Opt | Opt | Std | Std | Std | Std |
| Crew Cab 8-ft. box — 169.1-in. wheelbase | Opt | Opt | N/A | Opt | Opt | Opt |
| Mega Cab 6-ft. 4-in. box — 160.2-in. wheelbase | N/A | Opt | N/A | Opt | Opt | Opt |
| Drive | ||||||
| 4x2 | Std | Std | N/A | Std | Std | Std |
| 4x4 | Opt | Opt | Std | Opt | Opt | Opt |
| Powertrain | ||||||
| 6.4‑liter V‑8 HEMI, eight-speed automatic transmission | Std | Std | Std | Std | Std | Std |
| Engine / Transmission6.7‑liter I‑6 Cummins Turbo Diesel Standard Output, six-speed automatic transmission (2500/3500) | Opt | Opt | N/A | Opt | Opt | Opt |
| 6.7‑liter I‑6 Cummins Turbo Diesel High Output, six-speed Aisin automatic transmission (3500) | Opt | Opt | N/A | Opt | Opt | Opt |
| Mechanical | ||||||
| Rear Axle3.73 axle ratio | Opt | Opt | N/A | Opt | Opt | Opt |
| 4.10 axle ratio | Opt | Opt | Std | Opt | Opt | Opt |
| Electronic-locking front and rear differentials | Pkg | N/A | Std | N/A | N/A | N/A |
| Anti-spin differential (E-Locker and Anti-spin are mutually exclusive) | Opt | Opt | N/A | Opt | Opt | Opt |
| Suspension | ||||||
| Auto‑Level rear air suspension system | Opt | Opt | N/A | Opt | Opt | Opt |
| Transfer Case | ||||||
| Manual part-time | Std | N/A | Std | N/A | N/A | N/A |
| Electronic On‑Demand | Opt | Std | N/A | Std | Std | Std |
| Interior | ||||||
| SunroofSingle-pane, power-operated (Crew Cab/Mega Cab) | N/A | Opt | Opt | Opt | Opt | Opt |
| Uconnect Multimedia | ||||||
| RadiosUconnect 5.0 AM/FM/Bluetooth | Std | Std | N/A | N/A | N/A | N/A |
| Uconnect 8.4 AM/FM/Bluetooth/SiriusXM Radio | Opt | Pkg | Std | Std | N/A | N/A |
| Uconnect 8.4 AM/FM/Bluetooth/SiriusXM Radio/NAV/HD/CELL | N/A | Opt | Opt | Opt/Pkg | Std | N/A |
| Uconnect 12-in. radio | N/A | Opt | Opt | Opt | Pkg | Std |
| Sound System | ||||||
| Base six-speaker (four-speaker Regular Cab) | Std | Std | Std | N/A | N/A | N/A |
| Premium 10-speaker (seven-speaker Regular Cab) | N/A | Opt | Opt/Pkg | Std | Std | Std |
| Premium Plus 17-speaker | N/A | N/A | Opt | Pkg | Pkg | Pkg |
| Safety & Security | ||||||
| ParkView rear backup camera with dynamic gridlines, center lines and zoom | Std | Std | Std | Std | Std | Std |
| Surround View camera (Included in Tow Tech Group) | Pkg | Pkg | Pkg | Pkg | Pkg | Pkg |
| CameraCargo View camera (Included in Tow Tech and Max Tow Groups) | Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg |
| Auxiliary Camera Prep (Supports up to two remote cameras based on vehicle configuration) | Opt | Opt | Opt | Opt | Opt | Opt |
| Auxiliary remote camera (Mopar camera available at dealer) | Opt | Opt | Opt | Opt | Opt | Opt |
| Active Features | ||||||
| Adaptive Steering (Included in Safety Group) | Pkg | Pkg | Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg |
| Blind-spot Monitoring with conventional trailer coverage and Rear Cross Path detection (Included in Safety Group) | Opt/Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg | Opt/Pkg | Std |
| Forward Collision Mitigation (Automatic Emergency Braking) (Included in Safety Group) | Pkg | Pkg | Pkg | Pkg | Pkg | Pkg |
| Lane Keep Assist (Included in Safety Group) | Pkg | Pkg | Pkg | Pkg | Pkg | Pkg |
| Parking Sensors | ||||||
| ParkSense front/rear park assist system | N/A | Opt/Pkg | Std | Std | Std | Std |
| Front park sensors | Opt | Opt | N/A | N/A | N/A | N/A |
| Fuel Tank | ||||||
| 28-gal. tank (standard on Regular Cab, diesel engines) | Pkg | Pkg | Std | N/A | N/A | N/A |
| 31-gal. tank (standard on Crew Cab and Mega Cab with 6-ft. 4-in. box) | Std | Std | Std | Std | Std | Std |
| 32-gal. tank (standard on Regular Cab and Crew Cab with 8-ft. box) | Std/Opt | Std | Std | Std | Std | Std |
| 50-gal. tank (Optional on Crew Cab with 8-ft. box) | Opt | Opt | N/A | Opt | Opt | Opt |
| Trailer Brake Controller | ||||||
| Integrated controller (included in Max Tow Package) | Opt/Pkg | Std | Std | Std | Std | Std |
| Trailer tire-pressure monitoring system | Opt | Opt | Opt | Opt | Opt | Opt |
| Appearance Packages | ||||||
Body-color Bumper Groupfront/rear bumper painted body color | N/A | N/A | N/A | Opt | Opt | Opt |
Chrome Appearance Group (Tradesman)chrome front/rear bumper; upper header/lower applique – chrome; Tradesman grille – chrome; steel chrome-clad wheels 18 x 8-in. (single rear wheel); steel wheel with chrome clad 17 x 6-in. (dual rear wheel) | Opt | N/A | N/A | N/A | N/A | N/A |
Chrome Appearance Group (Laramie)chrome side steps, flat, wheel-to-wheel; chrome belt molding; chrome tow hooks | N/A | N/A | N/A | Opt | N/A | N/A |
Limited Night Edition Packagemonotone paint only (select colors); body-color front bumper; body-color rear bumper; black badging; black grille and surround; body-color door handles; body-color mirror caps; dark headlight bezel; 20 x 9-in. cast aluminum black wheels (Tradesman and Big Horn); 20-in. OWL All-season | N/A | N/A | N/A | N/A | N/A | Std |
Sport Appearance Groupmonotone paint; body color door handles, front/rear bumper; upper header/lower applique – painted body color; interior, black with black headliner; ParkSense front/rear park assist (Big Horn/Lone Star only, standard on Laramie); 17 x 6-in. polished aluminum wheels (Big Horn/Lone Star dual rear wheel only) | N/A | Opt | N/A | Opt | N/A | N/A |
| Equipment Groups | ||||||
Tradesman Level 1 Equipment Group (Reg Cab only)overhead console, incandescent lighting; power windows, one touch down; power door locks, speed sensitive; premium vinyl door trim; mirrors, 6 x 9-in. power / heated (black) (2500 only); mirrors, trailer-tow, power / heated / puddle / turn / man. fold (black) (3500 only); remote keyless entry; interior door handle, satin chrome, polished | Opt | N/A | N/A | N/A | N/A | N/A |
| Tradesman Level 2 Equipment Group – All Cabs (Includes Level 1 Group Equipment on Reg Cab) — includes bench seats - Soul/Soulmate/Gear cloth; floor covering, carpet; optional: floor covering, vinyl; floor mats – carpeted, front (Reg Cab) and rear (Crew Cab); optional: floor mats – rubber, front (Reg Cab) and rear (Crew Cab); rear window, manual sliding (Reg Cab only); rear window, power sliding (Crew Cab); rear window, defroster (Crew Cab only); SiriusXM Radio | Opt | N/A | N/A | N/A | N/A | N/A |
Big Horn Level 1 Equipment Group18 x 8-in. cast aluminum polished wheels (single rear wheel only); halogen fog lamps; black power / heated / puddle / turn / power fold exterior mirrors; eight-way power driver seat with two-way lumbar, manual passenger seat; Uconnect 8.4 (AM/FM/SAT/Bluetooth) SiriusXM Radio; leather-wrapped steering wheel with audio controls; 3.5-in. color TFT cluster display; auto-dim rear view mirror; driver and passenger visors with illuminated vanity mirror; universal garage door opener in visor; switchable dome lamp – footwell lighting; upper closed glove box with painted door and Big Horn badge; glove box lighting – power-adjustable pedals; rear in-floor storage boxes (Crew Cab only); folding flat load floor (Crew Cab only); manual sliding rear window (Reg Cab only); foam bottle inserts (front doors only) | N/A | Opt | N/A | N/A | N/A | N/A |
| Big Horn Level 2 Equipment Group (Includes Big Horn Level 1 Group Equipment) — includes 7-in. color TFT cluster display; remote start, key fob activated - security alarm; ParkSense front/rear park assist (six rear sensors with DRW); heated front seats; heated steering wheel; dual-zone air conditioning (not available on Reg Cab); power sliding rear window (Crew and Mega Cab only); rear window defroster (Crew and Mega Cab only); dual remote USB ports - charge only (not available on Reg Cab); 115-volt 400W AC power outlets (front, rear) (rear not available on Reg Cab); damped tailgate | N/A | Opt | N/A | N/A | N/A | N/A |
Power Wagon Level 1 Equipment Groupremote start, key fob activated; power-adjustable pedals; perforated leather steering wheel with audio controls / gray stitching / heated; heated front seats; rear in-floor storage boxes (Crew Cab only); universal garage door opener in visor; driver and passenger visors with illuminated vanity mirror and universal garage door opener; foam bottle inserts (front doors only); power release tailgate | N/A | N/A | Opt | N/A | N/A | N/A |
| Power Wagon Level 2 Equipment Group (Includes Power Wagon Level 1 Group Equipment) — includes bench seats – black soft leather with heavy-duty Bristol vinyl and heavy-duty Gode‑Tex vinyl accents; premium audio (9 speakers + 1 subwoofer); trailer-tow mirrors, power / heated / puddle / turn / memory / power fold / power convex / trailer spotlight (black); power-adjustable pedals with memory; radio / driver seat / mirror / pedal memory; auto high-beam headlamp control; rain-sensitive wipers; switchable LED dome lamp; LED front/rear door accent lighting; LED overhead console; LED front footwell lighting; dual-zone air conditioning; remote proximity (passive) keyless entry; dual remote USB ports - charge only; 115-volt 400W AC power outlet (rear); security alarm | N/A | N/A | Opt | N/A | N/A | N/A |
Laramie Level 1 Equipment Groupauto high-beam headlamp control; rain-sensitive wipers; power release tailgate; rear in-floor storage boxes (Crew Cab only); foam bottle inserts (front doors only); single-disc CD player; ventilated outboard seating positions (3 levels); radio/driver seat/mirror/pedal memory; 6 x 9-in. power / heated mirrors (black), memory; power-adjustable pedals; blind spot monitoring with cross path detection | N/A | N/A | N/A | Opt | N/A | N/A |
| Laramie Level 2 Equipment Group (Includes Laramie Level 1 Group Equipment) — includes rear seat heat (3 adjustment levels); dual remote USB ports - charging only; wireless charging pad (bucket seats only); Uconnect 8.4 (AM/FM/SAT/Bluetooth/NAV/Voice); premium 17-speaker surround sound system (16 amplified speakers + subwoofer) | N/A | N/A | N/A | Opt | N/A | N/A |
Laramie Longhorn Level 1 Equipment Groupblind-spot monitoring with cross path detection; Uconnect 12.0 - AM/FM/BT/SXM/NAV/HD/Cell; premium 17-speaker surround sound system (16 amplified speakers + subwoofer); wireless charging pad; power running boards | N/A | N/A | N/A | N/A | Opt | N/A |
Limited Level 1 Equipment GroupSurround View camera; full-speed Forward Collision Warning-Plus with auto emergency braking; Adaptive Cruise Control with Stop; premium 17-speaker surround sound system (16 + subwoofer); trailer reverse guidance (included with surround view camera) | N/A | N/A | N/A | N/A | N/A | Opt |
| Functional Packages | ||||||
Bed Utility Groupdeployable bed step; LED bed lighting; spray-in bedliner | Opt | Opt | Opt | Opt | N/A | N/A |
| Box Delete (Regular Cab or Crew Cab) (Not available with Power Wagon Package) | Opt | Opt | N/A | N/A | N/A | N/A |
Cold Weather Groupblock heater; winter front grille cover | Opt | Opt | N/A | Opt | Opt | Opt |
Comfort Groupheated front seats and heated leather-wrapped steering wheel | N/A | Opt | N/A | N/A | N/A | N/A |
Dual Rear Wheel Group (3500 only)rear wheelhouse liners; cab-mounted, box and rear fender LED clearance lamps | Opt | Opt | N/A | Opt | Opt | Opt |
Fifth-wheel/Gooseneck Prep Groupbed-mounted seven-pin connector; mounting holes for fifth-wheel hitch and gooseneck ball; mounting hole covers | Opt | Opt | N/A | Opt | Opt | Opt |
Max Towing Package (3500 only)Aisin transmission; 4.10:1 rear axle, dual rear wheels; auto-leveling rear air suspension; Fifth-wheel/Gooseneck Prep Group; cargo view camera; trailer brake controller; daytime running lamps; DOT Safety Kit | Opt | Opt | Opt | Opt | Opt | Opt |
Off-road Group (4x4 2500 only)front/rear Bilstein shocks; transfer case skid plate; tow hooks; Hill-descent Control; all-terrain tires; off-road decal (both sides, rear quarter panel) | Opt | Opt | N/A | Opt | Opt | Opt |
Power Wagon Equipment Group (4x4 2500 only)Articulink suspension; front/rear Bilstein shocks (Power Wagon tuned); Hill-descent Control; Tru-Lok front and rear axles; 4.10 axle ratio; tow hooks; fuel tank skid plate; transfer case skid plate; front electric 12,000-lb. winch; black wheel flares, Power Wagon design; fog lamps; bright chrome front and rear bumper (Tradesman); front disconnecting stabilizer bar; 17 x 8.0-in. cast aluminum Power Wagon wheel; LT285/70R17D OWL Goodyear Wrangler Duratrac all-terrain tires; rear wheel well liners | Opt | N/A | Std | N/A | N/A | N/A |
Premium Lighting GroupBi-LED projector headlamps with signature lighting; LED taillamps and fog lamps with signature lighting | N/A | Opt | N/A | N/A | N/A | N/A |
Protection Group (4x4 models only)tow hooks (2500, 3500 Tradesman Regular Cab); transfer case skid plate | Opt | Opt | N/A | Opt | Opt | Opt |
RamBox Utility Groupstowable bed divider and upper rail system | Opt | Opt | Opt | Opt | Opt | Opt |
Safety GroupAdaptive Cruise Control with Stop; Forward Collision Mitigation with Automatic Emergency Braking; Blind-spot Monitoring with trailer coverage and Rear Cross Path detection; Lane Keep Assist; LED taillamps; rain-sensitive wipers; Smart Beam headlamps | Opt | Opt | Opt | Opt | Opt | Opt |
Snow Chief Group220-amp alternator; anti-spin rear differential; instrument panel mounted auxiliary switches; LED clearance lamps; LT275/70R18E OWL On/Off-road tires (with 18-in. wheels); transfer case skid plate | Opt | Opt | N/A | Opt | Opt | Opt |
Snow Plow Prep Group220-amp alternator; transfer case skid plate | Opt | Opt | N/A | Opt | Opt | Opt |
Tow Technology GroupSurround View camera; cargo view camera with dynamic grid lines; trailer reverse guidance; trailer-tow mirror with trailer spot lamp; blind-spot monitoring with Rear Cross Path detection | Opt | Opt | Opt | Opt | Opt | Opt |
- A dash in the printed guide is recorded as NA.
- Package rows name the option group followed by what it includes.
- Some packages are limited to a model or drive, such as 3500 only or 4x4 2500 only, as noted in the row label.
What each trim adds
Equipment that becomes standard at each step up, compared with the next trim down in price. Packages and options aren't counted.
Big Horn/Lone Starover Tradesman+1 standard
- Integrated controller (included in Max Tow Package)
Power Wagonover Big Horn/Lone Star+2 standard
- Uconnect 8.4 AM/FM/Bluetooth/SiriusXM Radio
- ParkSense front/rear park assist system
Laramieover Power Wagon+1 standard
- Premium 10-speaker (seven-speaker Regular Cab)
Laramie Longhornover Laramie+1 standard
- Uconnect 8.4 AM/FM/Bluetooth/SiriusXM Radio/NAV/HD/CELL
Limitedover Laramie Longhorn+2 standard
- Radios: Uconnect 12-in. radio
- Blind-spot Monitoring with conventional trailer coverage and Rear Cross Path detection (Included in Safety Group)
Standard on every trim (3)
- 6.4-liter V-8 HEMI, eight-speed automatic transmission
- ParkView rear backup camera with dynamic gridlines, center lines and zoom
- 31-gal. tank (standard on Crew Cab and Mega Cab with 6-ft. 4-in. box)
Source: 2021 Ram Heavy Duty Feature Availability, Stellantis North America. Equipment can change during the model year and some items arrive late; confirm on the window sticker.
No EPA fuel-economy rating. Heavy-duty pickups, chassis cabs and full-size vans above 8,500 lb gross vehicle weight are exempt from EPA labeling, so there is no official MPG figure for the 3500.
2021 Ram 3500 wheels & tires
The spec sheet doesn't list tire sizes for this model year; here is what the owner's manual says.
- Cold tire pressure
- Not a single number: the owner's manual refers to the tire and loading placard, which lists the pressures for your exact tire size and load.
- Spare
- Manual covers a compact spare or a non-matching full-size spare, depending on equipment; neither has a pressure sensor.
- Lug nut torque
- 130 ft-lb (176 N·m) (Cone type), M14 x 1.50 thread, 22 mm socket
- Pressure monitor
- A tire pressure monitoring system warns when a tire is low.
Sizes and pressures vary by trim, wheel package and load: check the placard on your vehicle and the tire sidewall. Sizes from the manufacturer's specification sheet (2021 Ram Heavy Duty Specifications). Pressure and spare notes from the owner's manual.
2021 Ram 3500 maintenance schedule
The factory schedule for normal driving. Oil changes follow the oil-change indicator on most models; severe use (towing, dusty roads, lots of idling) shortens some intervals.
A dot means the service is due at that mileage or after that many years, whichever comes first.
Additional Inspections
- Inspect the CV/Universal joints
- Inspect front suspension, tie rod ends, and replace if necessary
- Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid.
- Inspect the brake linings, replace as necessary
- Adjust parking brake as necessary
Additional Maintenance
- Replace the cabin air filter
| Service | 20k2 yr | 30k3 yr | 40k4 yr | 50k5 yr | 60k6 yr | 70k7 yr | 80k8 yr | 90k9 yr | 100k10 yr | 110k11 yr | 120k12 yr | 130k13 yr | 140k14 yr | 150k15 yr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Additional Inspections | ||||||||||||||
| Inspect the CV/Universal joints | ||||||||||||||
| Inspect front suspension, tie rod ends, and replace if necessary | ||||||||||||||
| Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid. | ||||||||||||||
| Inspect the brake linings, replace as necessary | ||||||||||||||
| Adjust parking brake as necessary | ||||||||||||||
| Inspect transfer case fluid | ||||||||||||||
| Additional Maintenance | ||||||||||||||
| Replace the cabin air filter | ||||||||||||||
| Replace the engine air cleaner filter | ||||||||||||||
| Replace spark plugsThe spark plug change interval is mileage based only, yearly intervals do not apply. | ||||||||||||||
| Flush and replace the engine coolant at 10 years or 150,000 miles (240,000 km) whichever comes first | ||||||||||||||
| Inspect the transfer case fluid, change for any of the following: police, taxi, fleet, or frequent trailer towing | ||||||||||||||
| Change the transfer case fluid | ||||||||||||||
| Inspect and replace PCV valve if necessary | ||||||||||||||
At every oil change
- Change oil and filter
- Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on
- Inspect battery and clean and tighten terminals as required
- Inspect the CV/Universal joints
- Inspect brake pads, shoes, rotors, drums, hoses and parking brake
- Inspect engine cooling system protection and hoses
- Inspect exhaust system
- Inspect engine air cleaner filter if using in dusty or off-road conditions. If required, replace engine air cleaner filter
- Inspect and replace the Evaporative System Fresh Air Filter as necessary, replacement may be more frequent if vehicle is operated in extreme dusty conditions
2021 Ram 3500 fluids & capacities
Oil, coolant, transmission and axle fluids with their capacities and specifications, wheel torque and fuel requirements, from the owner's manual.
Fluid capacities
| System | Applies to | Capacity |
|---|---|---|
| 6.4L engine | ||
| Fuel tank (approximate) | Gasoline engine: 2500/3500 short bed | 31 gal117 L |
| Gasoline engine: 2500/3500 long bed | 32 gal121 L | |
| Gasoline engine: 2500/3500 Crew Cab long bed, if equipped | 50 gal189 L | |
| Engine oil with filter | Gasoline engine | 7 qt6.6 L |
| Cooling system | Gasoline engine | 16.6 qt15.7 L |
| 6.7L diesel engine | ||
| Fuel tank (approximate) | : 2500/3500 Standard Cab long bed | 28 gal106 L |
| : 2500/3500 Crew Cab/Mega Cab short bed | 31 gal117 L | |
| : 2500/3500 Crew Cab long bed | 32 gal121 L | |
| : 2500/3500 Crew Cab long bed, if equipped | 50 gal189 L | |
| Engine oil with filter | 12 qt11.4 L | |
| Cooling system | 22.0 qt20.8 L | |
| Diesel exhaust fluid tank | 5.7 gal21 L | |
Engine fluids
| Component | Fluid / grade | Mopar product |
|---|---|---|
| 6.4L engine | ||
| Engine coolantGasoline engine | Organic Additive Technology (OAT) antifreeze/coolant, 10 year/150,000 mile (240,000 km) | Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT |
| Engine oilGasoline engine | SAE 0W-40 full synthetic, API SN; all operating temperaturesMS-12633 | Pennzoil Ultra 0W-40 or equivalent Mopar engine oil |
| Engine oil filterGasoline engine | Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements | Mopar Engine Oil Filter |
| 6.7L diesel engine | ||
| Engine coolant | Organic Additive Technology (OAT) antifreeze/coolant, 10 year/150,000 mile (240,000 km) | Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT |
| Engine oilAmbient above 0°F (-18°C) | SAE 10W-30, API CK-4 required (Cummins CES 20081 products also acceptable)MS-10902 | Mopar, Shell Rotella or Shell Rimula 10W-30 |
| Engine oilAmbient below 0°F (-18°C) | SAE 5W-40 synthetic, API CK-4 required (Cummins CES 20081 products also acceptable)MS-10902 | Mopar, Shell Rotella or Shell Rimula 5W-40 |
| Engine oil filter | Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements | Mopar Engine Oil Filter |
| Fuel filters | 3 micron rating (engine-mounted filter); 5 micron rating (chassis-mounted filter) | Mopar Fuel Filter |
| Crankcase ventilation filter | Mopar CCV filter | Mopar CCV Filter |
| Diesel exhaust fluid | DEF API certified to ISO 22241 | Mopar Diesel Exhaust Fluid (API Certified) |
Chassis fluids & lubricants
| Component | Fluid / grade | Mopar product |
|---|---|---|
| 6.4L engine | ||
| Automatic transmissionGasoline engine: eight-speed automatic | ZF 8 & 9 Speed ATF or equivalent | Mopar ZF 8 & 9 Speed ATF |
| Transfer caseGasoline engine | Transfer case lubricant for Borg Warner 44-44 and 44-45 | Mopar Transfer Case Lubricant |
| Front and rear axleGasoline engine | SAE 75W-85 HD GL-5 synthetic axle lubricant in 9.25 front and 11.5 and 12.0 single-rear-wheel rear axles; SAE 75W-140 GL-5 synthetic gear lubricant in 12.0 dual-rear-wheel rear axles; limited slip additive required for limited slip axles | Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant; Mopar GL-5 Synthetic Gear Lubricant SAE 75W-140 |
| Brake master cylinderGasoline engine | DOT 3 | Mopar DOT 3 |
| Power steering reservoirGasoline engine | Power steering fluid +4 or ATF+4 | Mopar Power Steering Fluid +4 or Mopar ATF+4 |
| 6.7L diesel engine | ||
| Automatic transmission: 68RFE | ATF+4 | Mopar ATF+4 |
| Automatic transmission: AS69RC | ASRC automatic transmission fluid or equivalent | Mopar ASRC Automatic Transmission Fluid |
| Transfer case | BW44-44 transfer case fluid | Mopar BW44-44 Transfer Case Fluid |
| Front and rear axle | SAE 75W-85 HD GL-5 synthetic axle lubricant in 9.25 front and 11.5 and 12.0 single-rear-wheel rear axles; SAE 75W-140 GL-5 synthetic gear lubricant in 12.0 dual-rear-wheel rear axles; limited slip additive required for limited slip axles | Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant; Mopar GL-5 Synthetic Gear Lubricant SAE 75W-140 |
| Brake master cylinder | DOT 3 | Mopar DOT 3 |
Fuel
| Engine | Minimum | Ethanol / biodiesel |
|---|---|---|
| 6.4L gasoline engine | 87 octane Regular unleaded | Up to 15% (E15) |
| 6.7L diesel engine | Ultra-low-sulfur diesel | Up to B5 (ASTM D-975); up to B20 (ASTM D-7467) on B20-capable pickups |
Wheel lug nut torque
| Wheels | Torque |
|---|---|
| Cone typeThread M14 x 1.5022 mm socket | 130 ft‑lb (176 N·m) |
| Flanged typeThread M14 x 1.5022 mm socket | 129 ft‑lb (175 N·m) |
- Manual is shared by Ram 2500 and 3500 pickups; capacity rows are labelled 2500/3500.
- Fuel capacity depends on cab and bed length; 50 gal tank is optional on Crew Cab long bed.
- Diesel engine coolant capacity of 22.0 qt is as printed.
- Check wheel lug torque after 25 miles (40 km) of driving.
Source: Owner's manual on Mopar.com. Always confirm with the manual for your exact vehicle.
2021 Ram 3500 recalls & safety
What the U.S. government's National Highway Traffic Safety Administration (NHTSA) has on file for the 2021 Ram 3500: 9 recall campaigns and 62 owner complaints. Fetched November 8, 2026.
NHTSA hasn't published 5-Star Safety Ratings for the 2021 Ram 3500.
Recalls (9)
Newest first. A campaign covers certain vehicles of this model year, not necessarily every one. To see which apply to a specific vehicle, and whether the fix has been done, enter its VIN at nhtsa.gov/recalls or ask a dealer; repairs are free of charge.
Air bags: frontalNovember 6, 2025 · Campaign 25V765000
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Risk: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Fix: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C.
Campaign 25V765000 on NHTSA.govElectrical system: wiring: relays/solenoidsFebruary 9, 2023 · Campaign 23V060000Park outsidePark outside
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 2500, 3500, 3500 Cab Chassis, and 4500, 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the heater grid relay with the ignition on or off.
Risk: An electrical short in the relay can result in an engine compartment fire with the ignition on or off, increasing the risk of injury.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the relay, free of charge. This will be a Phased campaign. Phase 1 will include 2023 model year vehicles.
Campaign 23V060000 on NHTSA.govStructure: body: tailgate: hinge and attachmentsDecember 8, 2022 · Campaign 22V904000
Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailgate opening while driving.
Risk: An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creating a road hazard and increasing the risk of a crash.
Fix: Dealers will inspect the tailgate striker alignment to the box latch and adjust, if necessary, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZB8.
Campaign 22V904000 on NHTSA.govPower train: automatic transmissionNovember 10, 2022 · Campaign 22V835000
FCA US, LLC (Chrysler) is recalling certain 2020-2023 Ram 2500 and 2020-2022 Ram 3500 vehicles. A build-up of pressure and heat inside the transmission may result in a transmission fluid leak from the dipstick tube.
Risk: Leaking transmission fluid may contact an ignition source within the engine compartment, increasing the risk of a fire.
Fix: Dealers will replace the transmission dipstick and transmission vent assembly, free of charge. Owner notification letters were mailed December 29, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. Chrysler's number for this recall is ZA3.
Campaign 22V835000 on NHTSA.govService brakes, hydraulic: antilock/traction control/electronic limited slip: control unit/moduleMarch 10, 2022 · Campaign 22V140000
Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 2500 and 2021-2022 Dodge Durango vehicles, and 2019-2022 3500 cab chassis with GVWR less than 10,000 lbs. The ABS control module software may prevent the electronic stability control (ESC) malfunction indicator light from illuminating during certain conditions. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
Risk: An ESC malfunction indicator light that fails to illuminate during an electronic stability control problem can increase the risk of a crash.
Fix: Dealers will update the ABS control module software, free of charge. Owner notification letters were mailed March 29, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Z20.
Campaign 22V140000 on NHTSA.govAir bags: side/window: curtainNovember 24, 2021 · Campaign 21V925000
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured with the incorrect amount of compressed gas, which can result in an improper air bag deployment.
Risk: An air bag that deploys improperly can increase the risk of injury in a crash.
Fix: Dealers will replace the SABIC assemblies, free of charge. Owner notification letters were mailed January 17, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y99.
Campaign 21V925000 on NHTSA.govShow 3 older recallsHide older recalls
Electrical system: wiring: relays/solenoidsOctober 14, 2021 · Campaign 21V798000Park outsidePark outside
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 3500, 2500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. An electrical short in the relay may cause a vehicle fire with the ignition on or off.
Risk: A vehicle fire increases the risk of injury.
Fix: Owners are advised to park these vehicles outside of buildings or structures, and not near other vehicles, until the vehicle has been remedied. Dealers will inspect and, if needed, replace the Solid State Intake Heater Grid Relay ("Relay"); if FCA US Recall ID Y08 (NHTSA Recall ID 21V-163) is open, then insulating…
Campaign 21V798000 on NHTSA.govWheels: lugs/nuts/bolts/studsMay 27, 2021 · Campaign 21V398000
Chrysler (FCA US, LLC) is recalling certain 2012-2021 RAM 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles. Incorrect information in the Service and Owner's Manuals may cause the flanged lug nuts to be over-tightened, which could result in a broken wheel stud and possible wheel separation.
Risk: Wheel separation can cause a vehicle crash.
Fix: Dealers will update the torque specification in the owner's manual and other published service documents. Dealers will also inspect the vehicle's wheel studs, replacing them if necessary, free of charge. Owner notification letters were mailed on November 30, 2021.
Campaign 21V398000 on NHTSA.govElectrical systemMarch 11, 2021 · Campaign 21V163000
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 2500, 3500, and 3500, 4500, and 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the Solid State Intake Heater Grid Relay, which could result in a vehicle fire.
Risk: A vehicle fire increases the risk of injury.
Fix: Dealers will inspect and, if needed, replace the Solid State Intake Heater Grid Relay ("Relay"); if FCA US Recall ID Y08 (NHTSA Recall ID 21V-163) is open, then insulating material will be applied to the Relay after inspection.
Campaign 21V163000 on NHTSA.govOwner complaints by component
- Complaints
- 62
- Crashes
- 0
- Fires
- 4
- Injuries
- 0
- Electrical system17
- Power train11
- Engine10
- Unknown or other9
- Wheels7
- Service brakes6
- Structure5
- Fuel/propulsion system4
Complaints are reports owners filed with NHTSA; they are not verified and a complaint can name more than one component. A high count reflects how many were sold as much as how often something fails.
Source: NHTSA public data (recalls, complaints and the New Car Assessment Program), covering Ram 3500. Check nhtsa.gov/recalls for the latest.
2021 Ram 3500 owner's manuals & publications
The manufacturer's owner's manual, quick guides, radio manuals, supplements and warranty booklets for the 2021 model year.
Owner's manuals
Quick guides
Uconnect & radio
Supplements
Warranty
- California Song-Beverly Consumer Warranty ActWarranty booklet (PDF)
- Diesel California Emission WarrantyCalifornia emissions warranty (PDF)
- Gas California Emission WarrantyCalifornia emissions warranty (PDF)
- Diesel WarrantyWarranty booklet (PDF)
- Gas WarrantyWarranty booklet (PDF)
- California Emission Warranty SupplementPDF
On Mopar.com
Manuals and guides are hosted by the manufacturer on vehicleinfo.mopar.com and open as PDFs. Mopar.com's owner site also has VIN-specific manuals and recall lookups.
Read for lake-effect country
What counts on a 2021 Ram 3500 from Michigan to Tennessee
None of the factory data on this page changes from one region to the next, but what deserves a second look does. Below are the 2021 Ram 3500 lines that matter for an Evansville winter, a spring of broken pavement, a boat on the hitch or a long descent in the hills.
What the manual says about oil
Factory oil: SAE 0W-40 (6.4L gasoline) and SAE 10W-30 or 5W-40 by temperature (6.7L diesel), 7 qt (6.4L gasoline) and 12 qt (6.7L diesel) per change with a filter. A Grand Rapids or Toledo January can leave an engine at single digits overnight, and at start-up the oil has to reach the top of the engine fast. Short trips that never fully warm the engine let moisture collect in the oil; a longer drive clears it.
Battery checks before the cold
The schedule includes a battery inspection at each oil change, with the terminals cleaned and tightened as required. Do it before the first cold snap: corrosion at the terminals adds resistance exactly when a frozen engine needs the most current from the battery. A load test each fall is worth adding once the battery is a few winters old.
Traction for snowbelt hills and hollows
This model year offers rear-wheel drive and four-wheel drive. In Indiana, the payoff comes in the first hour of a storm, before plows reach side streets, and on boat ramps slick with algae where a two-wheel-drive tow vehicle can spin. Keep the system's limits in mind on ice: driven wheels add grip for going, not for stopping or turning.
Boats, campers and Appalachian grades
Regular towing puts the 2021 Ram 3500 on the schedule's trailer rows: axle fluid, transfer case fluid and automatic transmission fluid service, first at 20,000 miles. A summer of hauling a boat to Lake Cumberland, Norris Lake or a Lake Michigan launch counts. Maximum trailer weight in the towing chart is 37,100 lb, and only one configuration reaches it. The Great Lakes are fresh water, so a trailer's real corrosion threat here is winter road salt, not the ramp.
Gravel hollow roads and the air filter
The schedule asks for more frequent air-filter attention in dusty conditions, beyond the normal replacement every 30,000 miles. Gravel roads up Appalachian hollows and coal-haul routes in West Virginia and eastern Kentucky qualify, so inspect the filter at each oil change if they are part of your week.
Octane from the owner data
The owner data specifies 87 octane. A higher grade than the manual asks for adds cost without benefit, while a lower one than required makes the engine pull back ignition timing, which shows most under load on a long Appalachian climb.
Capacities, ratings and service intervals: Stellantis data for the 2021 3500. The Great Lakes reading of them is independent and is not factory or dealer advice.
2021 Ram 3500 questions
How much oil does the 2021 Ram 3500 take?
With a filter change: 6.4L gasoline engine, 7 qt / 6.6 L and 6.7L diesel engine, 12 qt / 11.4 L. Capacities are from the owner's manual; check the dipstick or oil-life display after filling.
What kind of oil does the 2021 Ram 3500 use?
6.4L gasoline engine: SAE 0W-40 full synthetic, API SN; all operating temperatures (MS-12633); 6.4L gasoline engine: Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements (SAE/USCAR-36); 6.7L diesel engine, ambient above 0°F (-18°C): SAE 10W-30, API CK-4 required (Cummins CES 20081 products also acceptable) (MS-10902); 6.7L diesel engine, ambient below 0°F (-18°C): SAE 5W-40 synthetic, API CK-4 required (Cummins CES 20081 products also acceptable) (MS-10902); and 6.7L diesel engine: Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements (SAE/USCAR-36).
When is the first scheduled maintenance on the 2021 Ram 3500?
At 20,000 miles or 2 years: inspect the cv/universal joints; inspect front suspension, tie rod ends, and replace if necessary; inspect the front and rear axle surfaces. if gear oil leakage is suspected, check the fluid level. if using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid; inspect the brake linings, replace as necessary; adjust parking brake as necessary; replace the cabin air filter. Oil changes in between follow the oil-change indicator.
Where can I find the 2021 Ram 3500 owner's manual?
The manufacturer publishes it free on Mopar.com as a PDF (linked in the manuals section above), along with quick guides, radio manuals and the warranty booklet.
What MPG does the 2021 Ram 3500 get?
The EPA doesn't publish a fuel-economy rating for the 3500: heavy-duty pickups, chassis cabs and full-size vans above 8,500 pounds gross vehicle weight are exempt from fuel-economy labeling, so there is no official MPG figure to quote.
What changed on the 2021 Ram 3500?
New option package: Limited Night Edition Package; Engines: 6.4-liter HEMI® V-8 is new; Engines no longer listed: 6.4-liter HEMI V-8; The 6.7-liter Cummins Turbo Diesel I-6 (3500 High Output) is rated at 420 hp, up from 400 hp in 2020.
Does the 2021 Ram 3500 have recalls?
NHTSA lists 9 safety recall campaigns for the 2021 Ram 3500. The most recent: Air bags: frontal (November 2025), Electrical system: wiring (February 2023), and Structure: body (December 2022). NHTSA's data was last fetched November 8, 2026. Recalls are listed by model year, so a given vehicle may or may not be covered: enter its VIN at nhtsa.gov/recalls or ask a dealer to see which are open.
What are the most common safety complaints about the 2021 Ram 3500?
Owners have filed 62 complaints about the 2021 Ram 3500 with NHTSA. The components named most often are electrical system (17), power train (11), and engine (10). Complaints are reports from owners that NHTSA does not verify, so treat them as a signal to look into, not a finding.
Specifications come from the manufacturer's spec comparison and its media-site specification sheets; maintenance schedules, fluids and publications come from Mopar's owner site and owner's manuals. Equipment and ratings vary by configuration; check the owner's manual or a dealer for a specific vehicle.