Ram Chassis Cab · Model year 2021
2021 Ram Chassis Cab specs, maintenance & manuals
Shopping for a used 2021 Ram Chassis Cab or keeping one on the road? Here are the factory spec sheet, the maintenance schedule, fluid capacities and 15 manufacturer publications and its towing capacity (up to 35,220 lb), straight from the factory sources.
- Max towing
- 35,220 lb
- Horsepower
- 360–370 hp
- Recalls
- 5
- Schedule covers
- 150k miles
What changed for the 2021 Ram Chassis Cab
Nothing we compare (trims, equipment, engines, ratings) changed from 2020 to 2021.
All the differences we found
Listed for the first time on the equipment chart
- Cluster 3.5-in. thin-film transistor black and white Display — standard: Tradesman, SLT
- Upfitter Interface: Vehicle system interface module — standard: Tradesman, SLT, Laramie, Limited
No longer on the equipment chart
- Instrument Cluster Displays: Cluster 3.5-in. TFT B&W display
- Up-fitter Interface: Vehicle system interface module
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 Chassis Cab specs & features
Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2021 specification sheet.
General information2 specs
- Vehicle Type
- Regular Cab, Crew Cab: 4x2, 4x4
- Assembly Plant
- Saltillo Truck Assembly Plant, Coahuila, Mexico
Body/chassis2 specs
| 4x2 | 4x4 | |
|---|---|---|
| Layout | Longitudinal, front engine | Longitudinal, front engine, transfer case |
| Construction | Ladder-type frame, steel cab | Ladder-type frame, steel cab |
Engines42 specs
| 6.4-liter HEMI V-8 (six-speed) | |
| 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 de-activating 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 | 370 hp (306 Kw) @ 5,600 rpm |
| Torque | 429 lb.-ft. (582 N•m) @ 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 |
| 6.4-liter HEMI V-8 (eight-speed) | |
| 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 de-activating 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 | 370 hp (306 Kw) @ 5,600 rpm |
| Torque | 429 lb.-ft. (582 N•m) @ 4,000 rpm |
| Maximum Engine Speed | 5,800 rpm limited |
| Fuel Requirement | Unleaded regular, 87 octane (R+M)/2 |
| 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 | |
| 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 | 360 hp (268 Kw) @ 2,800 rpm (68RFE automatic transmission) |
| Torque | 800 lb.-ft. (1,084 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) |
Transmissions34 specs
| Aisin AS69RC — automatic six-speed | |
| Availability | 6.7-liter diesel |
| Description | Three planetary gear sets, full electronic control, electronically controlled converter clutch |
| Axle Ratios | 3.73, 4.10, 4.44, 4.89 |
| PTO Capability | Left or right |
| ZF 8HP75 — automatic eight-speed (3500 only) | |
| 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 | 4.10 |
| Aisin AS66RC — automatic six-speed | |
| Availability | 6.4-liter HEMI V-8 |
| Description | Three planetary gear-sets, one overrunning clutch, full electronic control, electronically controlled converter clutch |
| Axle Ratios | 4.44, 4.89 |
| PTO Capability | Left or right |
| Gear ratios | Aisin AS69RC — automatic six-speed | ZF 8HP75 — automatic eight-speed (3500 only) | Aisin AS66RC — automatic six-speed |
|---|---|---|---|
| 1st | 3.75 | 4.71 | 3.23 |
| 2nd | 2.00 | 3.14 | 1.84 |
| 3rd | 1.34 | 2.10 | 1.41 |
| 4th | 1.00 | 1.67 | 1.00 |
| 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, 44-49 | |
|---|---|---|
| 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, 44-49 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 |
Axles2 specs
- Front (4x4)
- AAM 10.5-in. beam front axle with center disconnect
- Rear
- AAM 12.0-in. beam rear axle
Electrical system6 specs
- Alternator: Rating
- 160-amp included with 6.4-liter HEMI V-8 and 6.7-liter diesel
- 220-amp included with 6.7-liter Laramie and Limited
- Dual (220 and 160) optional on 6.4-liter HEMI V-8
- Dual 220-amp optional on 6.7-liter diesel
- Battery: Description
- Group 65, maintenance-free, 730 CCA on 6.4-liter HEMI V-8
- Dual Group 65, maintenance-free, 730 CCA on 6.7-liter diesel
Rows with a blank label continue the item above them.
Suspension 3500 (includes 10,000 GVWR model)2 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 solid axle | Two-stage longitudinal leaf solid axle |
Suspension 4500/55002 specs
| 4x2 | 4x4 | |
|---|---|---|
| Front | Five-link with track bar, coil springs, stabilizer bar, solid axle | Five-link with track bar, coil springs, stabilizer bar, solid axle |
| Rear | Two-stage longitudinal leaf solid axle | Two-stage longitudinal leaf solid axle |
Brakes 35004 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 (gas)
- Hydro-boost
The blank-label row continues Power-Assist Type; the sheet lists two types without saying which engine each goes with.
Brakes 4500/55003 specs
- Front: Size and Type
- 15.35 x 1.54 (390 x 39) disc with twin-piston pin-slider caliper and ABS
- Rear: Size and Type
- 15.35 x 1.54 (390 x 39) disc with twin-piston pin-slider caliper and ABS
- Power-Assist Type
- Hydro-boost
Steering1 spec
- Power Assist
- Hydraulic Assist
Exterior dimensions75 specs
| 4x2 | 4x4 | |
|---|---|---|
| Regular cab 60 CA SRW (3500) | ||
| Wheelbase (nominal) | 143.3 (3,639) | 143.3 (3,639) |
| Track Width – Front | 67.6 (1,716) | 67.6 (1,716) |
| Track Width – Rear | 67.0 (1,703) | 67.0 (1,703) |
| Overall Length | 235.3 (5,977) | 235.3 (5,977) |
| Overall Width | 82.6 (2,099) | 82.6 (2,099) |
| Overall Height | 80.9 (2,055) | 80.9 (2,055) |
| Ground Clearance w/o Skid Plate | 13.7 (347) | 13.7 (347) |
| Ground Clearance w/ Skid Plate | — | 13.7 (347) |
| Axle to Ground – Front | 9.4 (240) | 9.4 (240) |
| Axle to Ground – Rear | 8.7 (221) | 8.7 (221) |
| Rear of Frame to Ground | 36.3 (922) | 36.3 (922) |
| Approach Angle (degrees) | 22.2 | 22.2 |
| Departure Angle (degrees) | 27.5 | 27.5 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 21.8 | 21.8 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | — | 21.8 |
| Crew cab 60 CA SRW (3500) | ||
| Wheelbase (nominal) | 172.2 (4,373) | 172.2 (4,373) |
| Track Width – Front | 67.6 (1,716) | 67.6 (1,716) |
| Track Width – Rear | 67.0 (1,703) | 67.0 (1,703) |
| Overall Length | 264.2 (6,710) | 264.2 (6,710) |
| Overall Width | 82.6 (2,099) | 82.6 (2,099) |
| Overall Height | 80.6 (2,046) | 80.6 (2,046) |
| Axle to Ground – Front | 9.4 (238) | 9.4 (238) |
| Axle to Ground – Rear | 8.7 (220) | 8.7 (220) |
| Rear of Frame to Ground | 35.7 (906) | 35.7 (906) |
| Approach Angle (degrees) | 22.5 | 22.5 |
| Departure Angle (degrees) | 26.7 | 26.7 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 19.6 | 19.6 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | — | 19.6 |
| Ground Clearance w/o Skid Plate | 13.3 (339) | 13.3 (339) |
| Ground Clearance w/ Skid Plate | — | 13.3 (339) |
| Regular cab 60 CA DRW (3500) | ||
| Wheelbase (nominal) | 143.5 (3,645) | 143.5 (3,645) |
| Track Width – Front | 69.6 (1,768) | 69.6 (1,768) |
| Track Width – Rear | 71.9 (1,825) | 71.9 (1,825) |
| Overall Length | 235.3 (5,977) | 235.3 (5,977) |
| Overall Width | 92.2 (2,341) | 92.2 (2,341) |
| Overall Height | 80.2 (2,036) | 80.2 (2,036) |
| Axle to Ground – Front | 8.6 (219) | 8.6 (219) |
| Axle to Ground – Rear | 8.0 (208) | 8.0 (208) |
| Rear of Frame to Ground | 35.9 (911) | 35.9 (911) |
| Approach Angle (degrees) | 20.4 | 20.4 |
| Departure Angle (degrees) | 26.9 | 26.9 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 20.7 | 20.7 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | — | 20.7 |
| Ground Clearance w/o Skid Plate | 12.9 (328) | 12.9 (328) |
| Ground Clearance w/ Skid Plate | — | 12.9 (328) |
| Regular cab 84 CA DRW (3500) | ||
| Wheelbase (nominal) | 167.3 (4,249) | 167.3 (4,249) |
| Track Width – Front | 69.6 (1,768) | 69.6 (1,768) |
| Track Width – Rear | 71.9 (1,825) | 71.9 (1,825) |
| Overall Length | 259.3 (6,586) | 259.3 (6,586) |
| Overall Width | 92.2 (2,341) | 92.2 (2,341) |
| Overall Height | 79.9 (2,029) | 79.9 (2,029) |
| Axle to Ground – Front | 8.7 (222) | 8.7 (222) |
| Axle to Ground – Rear | 8.0 (203) | 8.0 (203) |
| Rear of Frame to Ground | 34.9 (886) | 34.9 (886) |
| Approach Angle (degrees) | 21.0 | 21.0 |
| Departure Angle (degrees) | 25.7 | 25.7 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 17.1 | 18.1 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | — | 18.1 |
| Ground Clearance w/o Skid Plate | 12.7 (322) | 12.7 (322) |
| Ground Clearance w/ Skid Plate | — | 12.7 (322) |
| Crew cab 60 CA DRW (3500) | ||
| Wheelbase (nominal) | 172.4 (4,379) | 172.4 (4,379) |
| Track Width – Front | 69.6 (1,768) | 69.6 (1,768) |
| Track Width – Rear | 71.9 (1,825) | 71.9 (1,825) |
| Overall Length | 264.2 (6,710) | 264.2 (6,710) |
| Overall Width | 92.2 (2,341) | 92.2 (2,341) |
| Overall Height | 79.6 (2,022) | 79.6 (2,022) |
| Axle to Ground – Front | 8.5 (217) | 8.5 (217) |
| Axle to Ground – Rear | 8.0 (202) | 8.0 (202) |
| Rear of Frame to Ground | 34.3 (872) | 34.3 (872) |
| Approach Angle (degrees) | 21.0 | 21.0 |
| Departure Angle (degrees) | 25.1 | 25.1 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 18.0 | 18.0 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | — | 18.0 |
| Ground Clearance w/o Skid Plate | 12.4 (316) | 12.4 (316) |
| Ground Clearance w/ Skid Plate | — | 12.4 (316) |
— not listed or not applicable
Exterior dimensionsRegular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CAExterior dimensions: Regular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA15 specs
| 60 CA | 84 CA | |
|---|---|---|
| Wheelbase (nominal) | 144.6 (3,674) | 168.7 (4,284) |
| Track Width – Front | 77.1 (1,958) | 77.1 (1,958) |
| Track Width – Rear | 73.6 (1,870) | 73.6 (1,870) |
| Overall Length | 236.3 (6,001) | 260.2 (6,610) |
| Overall Width | 93.2 (2,368) | 93.2 (2,368) |
| Overall Height | 81.7 (2,075) | 81.5 (2,071) |
| Axle to Ground – Front | 8.7 (221) | 8.7 (221) |
| Axle to Ground – Rear | 8.0 (202) | 8.0 (202) |
| Rear of Frame to Ground | 36.4 (925) | 36.2 (920) |
| Approach Angle (degrees) | 25.4 | 25.7 |
| Departure Angle (degrees) | 27.7 | 27.5 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 22.6 | 20.8 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | 22.6 | 20.8 |
| Ground Clearance w/o Skid Plate | 13.7 (348) | 13.5 (344) |
| Ground Clearance w/ Skid Plate | 13.7 (348) | 13.5 (344) |
Exterior dimensionsRegular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CAExterior dimensions: Regular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CA15 specs
| 108 CA | 120 CA | |
|---|---|---|
| Wheelbase (nominal) | 192.6 (4,893) | 204.4 (5,191) |
| Track Width – Front | 77.1 (1,958) | 77.1 (1,958) |
| Track Width – Rear | 73.6 (1,870) | 73.6 (1,870) |
| Overall Length | 284.3 (7,221) | 296.3 (7,525) |
| Overall Width | 93.2 (2,368) | 93.2 (2,368) |
| Overall Height | 81.5 (2,071) | 81.4 (2,068) |
| Axle to Ground – Front | 8.7 (221) | 8.7 (221) |
| Axle to Ground – Rear | 8.1 (206) | 8.1 (206) |
| Rear of Frame to Ground | 36.9 (936) | 36.6 (930) |
| Approach Angle (degrees) | 25.7 | 25.8 |
| Departure Angle (degrees) | 28.2 | 27.6 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 20.2 | 19.6 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | 20.2 | 19.6 |
| Ground Clearance w/o Skid Plate | 13.6 (345) | 13.5 (342) |
| Ground Clearance w/ Skid Plate | 13.6 (345) | 13.5 (342) |
Exterior dimensionsCrew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CAExterior dimensions: Crew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA15 specs
| 60 CA | 84 CA | |
|---|---|---|
| Wheelbase (nominal) | 173.5 (4,407) | 197.5 (5,017) |
| Track Width – Front | 77.1 (1,958) | 77.1 (1,958) |
| Track Width – Rear | 73.6 (1,870) | 73.6 (1,870) |
| Overall Length | 265.2 (6,735) | 289.2 (7,345) |
| Overall Width | 93.2 (2,368) | 93.2 (2,368) |
| Overall Height | 81.4 (2,068) | 81.4 (2,068) |
| Axle to Ground – Front | 8.7 (220) | 8.6 (219) |
| Axle to Ground – Rear | 8.1 (206) | 8.1 (206) |
| Rear of Frame to Ground | 35.5 (901) | 36.7 (932) |
| Approach Angle (degrees) | 25.4 | 25.5 |
| Departure Angle (degrees) | 27.3 | 28.0 |
| Ramp Breakover Angle w/o Skid Plate (degrees) | 20.4 | 19.9 |
| Ramp Breakover Angle w/ Skid Plate (degrees) | 20.4 | 19.9 |
| Ground Clearance w/o Skid Plate | 13.5 (342) | 13.5 (342) |
| Ground Clearance w/ Skid Plate | 13.5 (342) | 13.5 (342) |
Accommodations50 specs
| 4x2 | 4x4 | |
|---|---|---|
| Regular cab 60 CA SRW (3500) | ||
| Seating Capacity, F/R | 3/– | 3/– |
| Front – Headroom | 39.8 (1.011) | 39.8 (1.011) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Interior Volume: Front – cu. ft. (cu. m) | 62.2 (1.8) | 62.2 (1.8) |
| Crew cab 60 CA SRW (3500) | ||
| Seating Capacity, F/R | 3/3 | 3/3 |
| Front – Headroom | 40.9 (1,038) | 40.9 (1,038) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Rear – Headroom | 39.8 (1,010) | 39.8 (1,010) |
| Rear – Legroom | 40.2 (1,022) | 40.2 (1,022) |
| Rear – Shoulder Room | 65.6 (1,666) | 65.6 (1,666) |
| Rear – Hip Room | 62.7 (1,593) | 62.7 (1,593) |
| Interior Volume: Front – cu. ft. (cu. m) | 63.9 (1.8) | 63.9 (1.8) |
| Interior Volume: Rear – cu. ft. (cu. m) | 60.7 (1.7) | 60.7 (1.7) |
| Regular cab 60 CA DRW (3500) | ||
| Seating Capacity, F/R | 3/– | 3/– |
| Front – Headroom | 39.8 (1,011) | 39.8 (1,011) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Interior Volume: Front – cu. ft. (cu. m) | 62.2 (1.8) | 62.2 (1.8) |
| Regular cab 84 CA DRW (3500) | ||
| Seating Capacity, F/R | 3/– | 3/– |
| Front – Headroom | 39.8 (1,011) | 39.8 (1,011) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Interior Volume: Front – cu. ft. (cu. m) | 62.2 (1.8) | 62.2 (1.8) |
| Crew cab 60 CA DRW (3500) | ||
| Seating Capacity, F/R | 3/3 | 3/3 |
| Front – Headroom | 40.9 (1,038) | 40.9 (1,038) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Rear – Headroom | 39.8 (1,010) | 39.8 (1,010) |
| Rear – Legroom | 40.2 (1,022) | 40.2 (1,022) |
| Rear – Shoulder Room | 65.6 (1,666) | 65.6 (1,666) |
| Rear – Hip Room | 62.7 (1,593) | 62.7 (1,593) |
| Interior Volume: Front – cu. ft. (cu. m) | 63.9 (1.8) | 63.9 (1.8) |
| Interior Volume: Rear – cu. ft. (cu. m) | 60.7 (1.7) | 60.7 (1.7) |
The sheet prints this headroom as 39.8 (1.011) with a period; the other regular cab sheets print 1,011.
AccommodationsRegular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CAAccommodations: Regular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA8 specs
| 60 CA | 84 CA | |
|---|---|---|
| Seating Capacity, F/R | 3/– | 3/– |
| Front – Headroom | 39.8 (1,011) | 38.9 (1,038) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Interior Volume: Front – cu. ft. (cu. m) | 62.2 (1.8) | 62.2 (1.8) |
84 CA front headroom is printed as 38.9 (1,038); 38.9 in. does not convert to 1,038 mm, so one of the two numbers may be a misprint on the sheet.
AccommodationsRegular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CAAccommodations: Regular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CA8 specs
| 108 CA | 120 CA | |
|---|---|---|
| Seating Capacity, F/R | 3/– | 3/– |
| Front – Headroom | 39.8 (1,011) | 39.8 (1,011) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Interior Volume: Front – cu. ft. (cu. m) | 62.2 (1.8) | 62.2 (1.8) |
AccommodationsCrew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CAAccommodations: Crew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA13 specs
| 60 CA | 84 CA | |
|---|---|---|
| Seating Capacity, F/R | 3/3 | 3/3 |
| Front – Headroom | 40.9 (1,038) | 40.9 (1,038) |
| Front – Legroom | 40.9 (1,040) | 40.9 (1,040) |
| Front – Shoulder Room | 65.9 (1,675) | 65.9 (1,675) |
| Front – Hip Room | 62.9 (1,598) | 62.9 (1,598) |
| Front – Seat Travel | 9.1 (230) | 9.1 (230) |
| Front – Recliner Range (degrees) | 59.0 | 59.0 |
| Rear – Headroom | 39.8 (1,010) | 39.8 (1,010) |
| Rear – Legroom | 40.2 (1,022) | 40.2 (1,022) |
| Rear – Shoulder Room | 65.6 (1,666) | 65.6 (1,666) |
| Rear – Hip Room | 62.7 (1,593) | 62.7 (1,593) |
| Interior Volume: Front – cu. ft. (cu. m) | 63.9 (1.8) | 63.9 (1.8) |
| Interior Volume: Rear – cu. ft. (cu. m) | 60.7 (1.7) | 60.7 (1.7) |
Source: 2021 Ram Chassis Cab 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 51 of 122 features · swipe for more trims
StandardOptionalPart of a packageNot availableEither, depending on configuration
| Feature | Tradesman | SLT | Laramie | Limited |
|---|---|---|---|---|
| Configuration | ||||
| 3500: Body ModelRegular Cab — 60-in. CA (143.5-in. wheelbase) | Std | Std | N/A | N/A |
| Regular Cab — 84-in. CA (167.5-in. wheelbase) (N/A with 10,000‑lb. GVWR) | Std | Std | N/A | N/A |
| Crew Cab — 60-in. CA (172.4-in. wheelbase) | Opt | Opt | Std | Std |
| 4x2 | Std | Std | Std | Std |
| 4x4 | Opt | Opt | Opt | Opt |
| 4500/5500: Body ModelRegular Cab — 60-in. CA (144.5-in. wheelbase) | Std | Std | N/A | N/A |
| Regular Cab — 84-in. CA (168.5-in. wheelbase) | Std | Std | N/A | N/A |
| Regular Cab — 108-in. CA (192.5-in. wheelbase) | Std | Std | N/A | N/A |
| Regular Cab — 120-in. CA (204.5-in. wheelbase) | Std | Std | N/A | N/A |
| Crew Cab — 60-in. CA (173.5-in. wheelbase) | Opt | Opt | Std | Std |
| Crew Cab — 84-in. CA (197.4-in. wheelbase) | Opt | Opt | Std | Std |
| 4x2 | Std | Std | Std | Std |
| 4x4 | Opt | Opt | Opt | Opt |
| Interior | ||||
| Instrument Cluster DisplaysCluster 3.5-in. thin-film transistor (TFT) black and white Display | Std | Std | N/A | N/A |
| Cluster 3.5-in. TFT color display | N/A | Pkg | N/A | N/A |
| Cluster 7.0-in. TFT color display | Pkg | Pkg | Std | Std |
| Ram Telematics System by Telogis | Opt | Opt | Opt | Opt |
| Vehicle system interface module (VSIM) | Std | Std | Std | Std |
| Uconnect Multimedia | ||||
| Uconnect Voice Command with Bluetooth | Std | Std | Std | Std |
| CompassCompass display in the radio (Tradesman availability only with optional 5.0-in. radio) | Pkg | Std | Std | Std |
| GPS antenna input on radio (packaged with 5.0-in., 8.4-in. and 12.0-in. radios) | Pkg | Pkg | Pkg | Pkg |
| Front: Media hub — includes two fully functional type A/C USB port pairs and one auxiliary jack (four USB connection points) | Std | Std | Std | Std |
| Middle: 2.5-amp charge only single USB port (located in center console or armrest) | Std | Std | Std | Std |
| ConnectivityRear: Dual remote USB port 2 A/C pairs; one pair fully functional, one pair charge only (packaged with Luxury Group) | N/A | Pkg | Std | Std |
| Auxiliary headphone jack for mobile devices | Std | Std | Std | Std |
| Wireless charging pad (includes CD player; packaged with Laramie) | N/A | N/A | Pkg | Std |
| Accessory delay | Std | Std | Std | Std |
| Auxiliary outlets (one battery and one ignition-fed) | Std | Std | Std | Std |
| Power115-volt auxiliary power outlet, instrument panel-mounted (Tradesman option) (packaged with SLT) | Opt | Pkg | Std | Std |
| 115-volt auxiliary power outlet, rear facing, (Crew Cab only) (packaged with SLT) | N/A | Pkg | Std | Std |
| 400-watt inverter | Pkg | Pkg | Pkg | Pkg |
| RadiosUconnect 3.0 (hands-free Bluetooth), associated display | Std | N/A | N/A | N/A |
| Uconnect 5.0 — AM/FM with 5.0-in. touchscreen display, media hub (USB, Auxiliary), Bluetooth, SiriusXM Radio, associated display | Opt | Std | N/A | N/A |
| Uconnect 8.4 — AM/FM with 8.4-in. touchscreen display, media hub (USB, Auxiliary), Uconnect with Bluetooth, SiriusXM Radio, HD radio, associated display | N/A | Opt | Std | N/A |
| Uconnect 8.4 AM/FM with 8.4-in. touchscreen display, media hub (USB, Auxiliary), Navigation, Uconnect with Bluetooth, SiriusXM Radio, HD radio, (packaged with Laramie) (SLT option is Crew Cab only) | N/A | Opt | Opt/Pkg | Std |
| Uconnect 12.0 — AM/FM/BT/SiriusXM Radio/NAV/HD/CELL, Apple CarPlay and Android Auto, SiriusXM Radio (packaged with Limited) | N/A | N/A | Opt | Opt/Pkg |
| Radio controls, steering wheel-mounted audio controls | Pkg | Pkg | Std | Std |
| Safety and Security | ||||
| CameraParkView rear backup camera | Opt | Opt | Opt | Std |
| Cargo View camera requires 8.4-in. or 12-in. radio, includes LED CHMSL and cargo lamps | N/A | Opt | Opt | Opt |
| Auxiliary Remote Camera (Mopar camera available at dealer) | N/A | Opt | Opt | Opt |
| Auxiliary Camera Prep, includes vehicle trailer wiring, camera display in radio, 12-pin connector at rear frame rail | N/A | Opt/Pkg | Opt/Pkg | Opt/Pkg |
| Surround View camera (five digital cameras) | N/A | Pkg | Pkg | Pkg |
| Parking SensorsRear park assist | Opt | Opt | Opt | Std |
| Front/rear park assist | Opt | Opt | Opt | Std |
| Safety FeaturesSecurity alarm | N/A | Opt | Std | Std |
| Backup alarm (audible alarm when vehicle is in reverse) | Opt | Opt | Opt | Opt |
| Lane Departure Warning, (Lane Keep Assist) | Pkg | Pkg | Pkg | Pkg |
| Adaptive Steering (standalone option) | Pkg | Pkg | Opt/Pkg | Opt/Pkg |
| Adaptive Cruise Control with Stop | Pkg | Pkg | Pkg | Pkg |
| Ready Alert Braking | Std | Std | Std | Std |
| Full Speed Forward Collision Warning Plus (available with Adaptive Cruise) | Pkg | Pkg | Pkg | Pkg |
| Lane Keep Assist | Pkg | Pkg | Pkg | Pkg |
| Adaptive Steering | Pkg | Pkg | Pkg | Pkg |
| Tire-fill alert system (must have 5-in. radio with Tradesman) | Opt | Opt | Std | Std |
| Selectable Tire Fill Alert (packaged with 8.4-in. and 12-in. radios on SLT) | N/A | Pkg | Std | Std |
| Tire-pressure Information System | Opt | Std | Std | Std |
| Tire-pressure Monitoring Display | Std | Std | Std | Std |
| Trailer Tire-pressure Monitoring | N/A | Opt | Opt | Opt |
| Trailer Reverse Guidance | N/A | Pkg | Pkg | Pkg |
| DOT-certified Roadside Safety Kit (DOT fire extinguisher, three reflecting triangles, spare fuses, two red vinyl flags) | Opt | Opt | Opt | Opt |
| Max Speed Settings (65 mph, 70 mph, 77 mph) | Opt | Opt | Opt | Opt |
| Auto High Beam Headlamp Control | Pkg | Pkg | Pkg | Std |
| Rain Sensing Wipers | Pkg | Pkg | Pkg | Std |
| Auxiliary Reverse Lamps (packaged with SLT) | Opt | Opt/Pkg | Std | Std |
| Equipment Packages | ||||
Electrical Accessory Group220-amp alternator; Voltage Monitoring Auto Idle Up; Trailer Brake Control | Opt | Opt | Opt | Opt |
Ambulance Prep Group220-amp alternator; Voltage Monitoring Auto Idle Up; Remote rear heat/AC (provides ability to run auxiliary mounted heater and A/C independently of instrument panel controls); A/C line tap and engine coolant access for upfitter; Foam roof blocks (included with Regular Cab only) | Opt | Opt | Opt | Opt |
Chrome Appearance GroupChrome front bumper (3500/4500/5500); Chrome grille (3500/4500/5500); Chrome inserts; Chrome clad steel wheel on 3500 DRW; Chrome clad steel wheel on 3500 SRW; New bright wheel cover (4500/5500) | Opt | N/A | N/A | N/A |
Cold Weather Group (Diesel option)Engine block heater cord; Winter front grille cover | Opt | Opt | Opt | Opt |
Comfort GroupHeated steering wheel; Leather-wrapped steering wheel and audio controls; Cluster 3.5-in. TFT color display | N/A | Opt | N/A | N/A |
Tradesman Level 1 Equipment GroupOverhead console (Regular Cab); Power windows (Regular Cab); Power door locks (Regular Cab) (speed sensitive actuation); Power black trailer tow mirrors (Regular Cab); Door trim: (Regular Cab) (wrapped bolster/armrest, 360 door handles, join seam, Iron Gray painted surround and accent); Remote Keyless Entry; Interior door handles, satin chrome polished | Opt | N/A | N/A | N/A |
Laramie Level 1 Equipment GroupAuto high beam headlamp control; Rain-sensing wipers; Foam bottle door inserts; Ventilated three-level front driver/passenger seats; Power-adjustable pedals; Radio, driver, seat, mirror, pedals memory; CD player | N/A | N/A | Opt | N/A |
| Laramie Level 2 Equipment Group (Includes Laramie Level 1 Equipment Group Content) — includes Uconnect 8.4 (AM/FM/SAT/Bluetooth/NAV/Voice); 17 speakers; Wireless charging pad; Rear seat heat (three level) | N/A | N/A | Opt | N/A |
Limited Level 1 Equipment Group12-in. radio; 17-speaker system; Full Speed Forward Collision Warning Plus with Auto Emergency Braking; Adaptive Cruise Control with Stop; Surround View Camera | N/A | N/A | N/A | Opt |
Premium Lighting GroupLED headlamps; LED fog lamps; Cluster 3.5-in. TFT color display | N/A | Opt | N/A | N/A |
Safety GroupForward Collision Warning Plus with Auto Emergency Braking; Adaptive Cruise Control with Stop, Go and Hold; Lane Keep Assist; Adaptive steering; Rain-sensing wipers; Smart Beam; Trailer Brake Control (Packaged with Tradesman and SLT) | Opt | Opt | Opt | Opt |
Tow Technology GroupSurround View camera; Trailer reverse guidance; Auxiliary reverse lamps, mirror-mounted; Power convex mirrors | N/A | Opt | Opt | Opt |
Heavy-Duty Snowplow Prep Group220-amp alternator; Transfer case skid plate; Heavy Duty Front Suspension Group (4500 and 5500) | Opt | Opt | Opt | Opt |
Luxury GroupPassenger/driver cloth visors with incandescent illuminated mirrors; Universal garage door opener; Rear dome lamp with on/off switch; Cluster 7.0-in. TFT color display; Leather-wrapped steering wheel with remote audio control buttons; Rear backlight, power sliding (Crew Cab only); Foam bottle door insert; 115-volt outlet (front); 115-volt outlet (rear) (Crew only); Upper and lower glove box lighting; Power adjustable pedals; Rear: dual remote USB port (Crew only) 2 A/C pairs; one pair fully functional, one pair charge only; Upper glove box door with SLT badge | N/A | Opt | N/A | N/A |
Max Tow Package (Requires Diesel and Aisin)12-in. rear axle (3500); 4.10 axle (3500); 4.44 axle (4500); 4.89 axle (5500); 6.7-liter; Aisin transmission; Trailer brake controller | Opt | Opt | Opt | Opt |
Max Payload Package (6.4-liter 5500 only)19,000-lb. GVWR; 19,500-lb. GVWR; 4.89 axle ratio | Opt | Opt | Opt | Opt |
Rollback Carrier GroupVoltage monitoring auto idle up system; Rollback carrier adaptation brackets; 220-amp alternator; Left- or right-side PTO; 22-gallon mid-ship gas tank | Opt | Opt | N/A | N/A |
Rear Interior Trim Delete Group (Regular Cab only)Delete front center seat; Delete rear floor storage tray; Delete cab back trim panel | Opt | Opt | N/A | N/A |
15,000-lb. GVWR Package15,000-lb. Gross Vehicle Weight Rating (4500); 4x2, 4x4 | Opt | Opt | Opt | Opt |
16,000 GVWR Package16,000-lb. Gross Vehicle Weight Rating (4500); 4x2, 4x4 | Opt | Opt | Opt | Opt |
- Covers the 2021 Ram 3500, 4500 and 5500 Chassis Cab; rows marked 3500 or 4500/5500 apply to those models only.
- Equipment package contents are listed in the package row's label; the guide prints only the package's own availability code per trim.
- A dash in the guide is recorded as NA.
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.
SLTover Tradesman+3 standard
- Compass display in the radio (Tradesman availability only with optional 5.0-in. radio)
- Uconnect 5.0 — AM/FM with 5.0-in. touchscreen display, media hub (USB, Auxiliary), Bluetooth, SiriusXM Radio, associated display
- Safety Features: Tire-pressure Information System
Laramieover SLT+10 standard
- Instrument Cluster Displays: Cluster 7.0-in. TFT color display
- Rear: Dual remote USB port 2 A/C pairs; one pair fully functional, one pair charge only (packaged with Luxury Group)
- 115-volt auxiliary power outlet, instrument panel-mounted (Tradesman option) (packaged with SLT)
- 115-volt auxiliary power outlet, rear facing, (Crew Cab only) (packaged with SLT)
- Uconnect 8.4 — AM/FM with 8.4-in. touchscreen display, media hub (USB, Auxiliary), Uconnect with Bluetooth, SiriusXM Radio, HD radio, associated display
- Radio controls, steering wheel-mounted audio controls
- Safety Features: Security alarm
- Tire-fill alert system (must have 5-in. radio with Tradesman)
- Selectable Tire Fill Alert (packaged with 8.4-in. and 12-in. radios on SLT)
- Auxiliary Reverse Lamps (packaged with SLT)
Limitedover Laramie+7 standard
- Wireless charging pad (includes CD player; packaged with Laramie)
- Uconnect 8.4 AM/FM with 8.4-in. touchscreen display, media hub (USB, Auxiliary), Navigation, Uconnect with Bluetooth, SiriusXM Radio, HD radio, (packaged with Laramie) (SLT option is Crew Cab only)
- ParkView rear backup camera
- Parking Sensors: Rear park assist
- Parking Sensors: Front/rear park assist
- Safety Features: Auto High Beam Headlamp Control
- Safety Features: Rain Sensing Wipers
Standard on every Chassis Cab trim (28)
- 3500: Drive System: 4x2
- 4500/5500: Drive System: 4x2
- 6.4-liter HEMI V-8 (3500) with eight-speed 8HP75 automatic transmission
- Alternator: 180-amp
- Axles: 3500: Single Rear Wheel Group
- Axles: 3500: Front, 6,000-lb. GAWR (SRW axle)
- Axles: 3500: Rear, 11.50-in. (SRW axle)
- Axle Ratios: 3500: 4.10 ratio (standard with gas)
- Axle Ratios: 3500: Rear, anti-spin differential
- Axles: 4500/5500: Dual rear wheel
- Axles: 4500/5500: Front, 10.5-in.
- Axles: 4500/5500: Front axle disconnect (4500/5500 4x4)
- Axles: 4500/5500: Rear, anti-spin differential
- Axle Ratios: 4500: 4.44 ratio
- Axle Ratios: 4500: Rear, American Axle (12,000-lb. GAWR)
- Axle Ratios: 5500: 4.44 ratio
- Axle Ratios: 5500: Rear, American Axle, (13,500-lb. GAWR)
- Fuel Tank: 52-gallon, rear
- Power Take Off (PTO): Stationary elevated engine idle up
- Upfitter Interface: Vehicle system interface module (VSIM)
- Uconnect Voice Command with Bluetooth
- Front: Media hub — includes two fully functional type A/C USB port pairs and one auxiliary jack (four USB connection points)
- Middle: 2.5-amp charge only single USB port (located in center console or armrest)
- Auxiliary headphone jack for mobile devices
- Power: Accessory delay
- Auxiliary outlets (one battery and one ignition-fed)
- Safety Features: Ready Alert Braking
- Safety Features: Tire-pressure Monitoring Display
Source: 2021 Ram Chassis Cab 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 Chassis Cab.
2021 Ram Chassis Cab 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 (driver's side door opening), which lists the pressures for your exact tire size and load.
- Spare
- Manual covers compact and full-size spares by equipment; a non-matching spare has no 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 Chassis Cab Specifications). Pressure and spare notes from the owner's manual.
2021 Ram Chassis Cab 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, parking brake function
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, parking brake function | ||||||||||||||
| 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 | ||||||||||||||
| Change the automatic transmission fluid (AS66RC Transmission Only) | ||||||||||||||
| Change the automatic transmission fluid and sump filter (AS66RC Transmission Only) | ||||||||||||||
| 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 at the first sign of irregular wear, even if it occurs before the oil indicator system turns on
- Inspect engine cooling system protection and hoses
- Inspect exhaust system
- Inspect engine air cleaner filter if using in dusty or off-road conditions. Replace the engine air cleaner filter, if necessary
- Inspect battery and clean and tighten terminals as required
- Inspect the CV/Universal joints
- Inspect automatic transmission fluid if equipped with dipstick
- Inspect brake pads, shoes, rotors, drums, hoses and parking brake
- Inspect front end, and lubricate – If equipped with serviceable fittings
- 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 Chassis Cab 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) | Standard rear tank, gasoline engine | 52 gal197 L |
| Optional midship tank, gasoline engine | 22 gal83 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) | Standard rear tank | 52 gal197 L |
| Optional midship tank | 22 gal83 L | |
| Engine oil with filter | 12 qt11.4 L | |
| Cooling system | Chassis Cab 3500/4500 with AS69RC | 22.3 qt21.1 L |
| Chassis Cab 5500 with AS69RC | 22.8 qt21.6 L | |
| Diesel exhaust fluid tank (approximate) | 8.7 gal33 L | |
Engine fluids
| Component | Fluid / grade | Mopar product |
|---|---|---|
| 6.4L engine | ||
| Engine coolantGasoline engine | 10 Year/150,000 Mile OAT antifreeze/coolant | Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT |
| Engine oilGasoline engine | Full synthetic, API SN, SAE 0W-40, all operating temperaturesMS-12633 | Pennzoil Ultra 0W-40 or equivalent Mopar engine oil |
| Engine oil filterGasoline engine | Meets or exceeds SAE/USCAR-36 filter performance requirements | Mopar Engine Oil Filter |
| 6.7L diesel engine | ||
| Engine coolant | 10 Year/150,000 Mile OAT antifreeze/coolant | Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT |
| Engine oilAmbient above 0 °F (-18 °C) | SAE 10W-30, API CK-4 required (also Cummins CES 20081)MS-10902 | Mopar, Shell Rotella or Shell Rimula equivalent |
| Engine oilAmbient below 0 °F (-18 °C) | SAE 5W-40 synthetic, API CK-4 requiredMS-10902 | Mopar, Shell Rotella or Shell Rimula equivalent |
| Engine oil filter | Meets or exceeds SAE/USCAR-36 filter performance requirements | Mopar Engine Oil Filter |
| Fuel filters | 3 micron (engine-mounted filter); 5 micron (chassis-mounted filter); must meet manufacturer filtration and water-separation requirements | Mopar Fuel Filter |
| Crankcase ventilation filter | CCV filter | Mopar CCV Filter |
| Diesel exhaust fluid | API-certified to ISO 22241 | Mopar Diesel Exhaust Fluid (API Certified) (DEF) or equivalent |
Chassis fluids & lubricants
| Component | Fluid / grade | Mopar product |
|---|---|---|
| 6.4L engine | ||
| Automatic transmission, 8-speedGasoline engine | ZF 8 & 9 Speed ATF or equivalent | Mopar ZF 8 & 9 Speed ATF |
| Automatic transmission, 6-speedGasoline engine | ASRC automatic transmission fluid or equivalent | Mopar ASRC Automatic Transmission Fluid |
| Transfer caseGasoline engine | Transfer case lubricant for Borg Warner 44-44 and 44-45 | Mopar Transfer Case Lubricant for Borg Warner 44-44 and 44-45 |
| Front and rear axleGasoline engine | SAE 75W-85 HD GL-5 synthetic axle lubricant; limited-slip additive required for limited-slip axles | Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant |
| Brake master cylinderGasoline engine | DOT 3, SAE J1703 | Mopar DOT 3 |
| Power steering reservoirGasoline engine | Power steering fluid +4 or ATF+4 | Mopar Power Steering Fluid +4, Mopar ATF+4 |
| 6.7L diesel engine | ||
| Automatic transmission | 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; limited-slip additive required for limited-slip axles | Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant |
| Brake master cylinder | DOT 3, SAE J1703 | 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 pickups and Chassis Cabs with optional B20 capability |
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) |
- Fuel tank and cooling capacities are approximate.
- Cooling capacity for the 6.7L diesel depends on Chassis Cab model (3500/4500 vs 5500, both with AS69RC transmission).
- Lug torque applies to 10-bolt and 8-bolt patterns; retorque after 25 miles (40 km).
- Brake system power assist is hydro-boost, sharing fluid with the power steering.
Source: Owner's manual on Mopar.com. Always confirm with the manual for your exact vehicle.
2021 Ram Chassis Cab recalls & safety
What the U.S. government's National Highway Traffic Safety Administration (NHTSA) has on file for the 2021 Ram Chassis Cab: 5 recall campaigns and 4 owner complaints. Fetched November 8, 2026.
NHTSA hasn't published 5-Star Safety Ratings for the 2021 Ram Chassis Cab.
Recalls (5)
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.govElectrical 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
- 4
- Crashes
- 1
- Fires
- 2
- Injuries
- 0
- Electrical system2
- Firerelated1
- Service brakes1
- Suspension1
- Wheels1
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 Cab Chassis, Ram 4500, Ram 5500. Check nhtsa.gov/recalls for the latest.
2021 Ram Chassis Cab 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)
- 4500/5500 Diesel/Gas California Emission WarrantyCalifornia emissions warranty (PDF)
- 3500 Diesel/Gas California Emission WarrantyCalifornia emissions warranty (PDF)
- Chassis Cab 3500 Diesel WarrantyWarranty booklet (PDF)
- Chassis Cab 3500 Gas WarrantyWarranty booklet (PDF)
- Chassis Cab 4500/5500 Diesel WarrantyWarranty booklet (PDF)
- Chassis Cab 4500/5500 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.
Salt, snow and hills: the data
Reading the 2021 Chassis Cab data for Great Lakes roads
Lake-effect squalls, roads soaked in brine, potholes that open with every thaw and long Appalachian grades: driving in the Great Lakes states asks a lot of tires, batteries and undersides. These notes take the 2021 Chassis Cab figures above and flag the ones that carry the most weight in Tennessee.
What the manual says about oil
The 2021 Ram Chassis Cab fluids table lists SAE 0W-40 (6.4L gasoline) and SAE 10W-30 or 5W-40 by temperature (6.7L diesel), with 7 qt (6.4L gasoline) and 12 qt (6.7L diesel) per change. Lake-effect winters are full of short, cold trips: to work, to school, to the store and home again before the engine reaches temperature. That pattern is tough on oil, so let the oil-change indicator set the interval and never stretch it.
Starting in single digits
Battery care in this schedule: inspect it and clean and tighten the terminals as required at each oil change, and the spec sheet rates it at 730 cold-cranking amps. A battery that bakes through a Nashville or Memphis summer ages faster, then gets found out by the first hard freeze. Have it load-tested in fall rather than waiting for a slow crank.
Traction for snowbelt hills and hollows
This model year offers rear-wheel drive and four-wheel drive. In Tennessee, 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 Chassis Cab on the schedule's trailer rows: axle fluid and transfer case 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 35,220 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.
When the thermometer picks the oil
For the 6.7L diesel, the manual lists SAE 10W-30 above 0 °F (-18 °C) and SAE 5W-40 below 0 °F (-18 °C). A truck that pulls a boat to Kentucky Lake in July and sits outside in Lansing through January may need both lines within one year, so choose the oil for the season ahead, not the one just ending.
Filters for dust and pollen
The cabin air filter first comes up at 20,000 miles. Spring pollen in the Ohio and Tennessee valleys is heavy, and a clogged cabin filter also slows the defroster in winter because it chokes the blower's airflow. It is a five-minute job on most vehicles.
Each spec in these notes is pulled from the tables above. The commentary on salt, snow, potholes and grades is general guidance for the Great Lakes states; the owner's manual remains the authority.
2021 Ram Chassis Cab questions
How much oil does the 2021 Ram Chassis Cab 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 Chassis Cab use?
6.4L gasoline engine: Full synthetic, API SN, SAE 0W-40, all operating temperatures (MS-12633); 6.4L gasoline engine: Meets or exceeds SAE/USCAR-36 filter performance requirements; 6.7L diesel engine, ambient above 0 °F (-18 °C): SAE 10W-30, API CK-4 required (also Cummins CES 20081) (MS-10902); 6.7L diesel engine, ambient below 0 °F (-18 °C): SAE 5W-40 synthetic, API CK-4 required (MS-10902); and 6.7L diesel engine: Meets or exceeds SAE/USCAR-36 filter performance requirements.
When is the first scheduled maintenance on the 2021 Ram Chassis Cab?
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, parking brake function; replace the cabin air filter. Oil changes in between follow the oil-change indicator.
Where can I find the 2021 Ram Chassis Cab 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 Chassis Cab get?
The EPA doesn't publish a fuel-economy rating for the Chassis Cab: 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.
Does the 2021 Ram Chassis Cab have recalls?
NHTSA lists 5 safety recall campaigns for the 2021 Ram Chassis Cab. The most recent: Air bags: frontal (November 2025), Electrical system: wiring (February 2023), and Electrical system: wiring (October 2021). 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 Chassis Cab?
Owners have filed 4 complaints about the 2021 Ram Chassis Cab with NHTSA. The components named most often are electrical system (2), firerelated (1), and service brakes (1). 1 complaint involved a crash and 2 complaints a fire. 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.