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Ram Chassis Cab · Model year 2020

2020 Ram Chassis Cab specs, maintenance & manuals

Owner and shopper reference for the 2020 Ram Chassis Cab, built from Stellantis and Mopar data: the factory spec sheet, the maintenance schedule, fluid capacities and 15 manufacturer publications, plus a tow rating of up to 35,220 lb.

Max towing
35,220 lb
Horsepower
360–370 hp
Recalls
10
Schedule covers
150k miles
2020 Ram Chassis Cab towing capacity: up to 35,220 lbAll 196 configurations by cab, bed, engine and axle ratio.See the 2020 towing chart

What changed for the 2020 Ram Chassis Cab

What the manufacturer's data shows changed on the 2020 Ram Chassis Cab compared with 2019.

All the differences we found

Listed for the first time on the equipment chart

  • Auxiliary Remote Camera — optional: SLT, Laramie, Limited
  • Parking Sensors: Front/rear park assist — standard: Limited — optional: Tradesman, SLT, Laramie
  • Parking Sensors: Rear park assist — standard: Limited — optional: Tradesman, SLT, Laramie
  • Safety Features: Lane Keep Assist — optional: Tradesman, SLT, Laramie, Limited

No longer on the equipment chart

  • Auxiliary Wired Camera
  • Auxiliary Wired Camera
  • ParkSense: Front/rear park assist
  • ParkSense: Rear park assist
  • Trailer Tire Pressure Monitoring System

Compared automatically from the manufacturer's trim feature charts, specification sheets, towing guides and the EPA's fuel-economy data for 2019 and 2020. Equipment varies by trim and market; confirm details on a specific vehicle.

2020 Ram Chassis Cab specs & features

Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2020 specification sheet.

General information2 specs
Vehicle Type
Regular Cab, Crew Cab: 4x2, 4x4
Assembly Plant
Saltillo Truck Assembly Plant, Coahuila, Mexico
Body/chassis2 specs
4x24x4
LayoutLongitudinal, front engineLongitudinal, front engine, transfer case
ConstructionLadder-type frame, steel cabLadder-type frame, steel cab
Engines42 specs
6.4-liter HEMI V-8 (six-speed)
Type and Description90-degree gasoline V-8 with variable cam timing
Displacement392 cu. in. (6,417 cu. cm)
Bore x Stroke4.09 x 3.72 (103.9 x 94.6)
Valve SystemPushrod-operated overhead valves, 16 valves, eight de-activating and eight hydraulic lifters, all with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, 356 aluminum cylinder heads with hemispherical combustion chambers
Compression Ratio10.0:1
Power370 hp (306 Kw) @ 5,600 rpm
Torque429 lb.-ft. (582 N•m) @ 4,000 rpm
Maximum Engine Speed5,800 rpm limited
Fuel RequirementUnleaded regular, 87 octane
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity16.6 quarts (15.75 liters)
Emission ControlThree-way catalytic converters, heated oxygen sensors, cooled electronic exhaust-gas recirculation (EGR) and individual cylinderfuel control
6.4-liter HEMI V-8 (eight-speed)
Type and Description90-degree gasoline V-8 with variable cam timing
Displacement392 cu. in. (6,417 cu. cm)
Bore x Stroke4.09 x 3.72 (103.9 x 94.6)
Valve SystemPushrod-operated overhead valves, 16 valves, eight de-activating and eight hydraulic lifters, all with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, 356 aluminum cylinder heads with hemispherical combustion chambers
Compression Ratio10.0:1
Power370 hp (306 Kw) @ 5,600 rpm
Torque429 lb.-ft. (582 N•m) @ 4,000 rpm
Maximum Engine Speed5,800 rpm limited
Fuel RequirementUnleaded regular, 87 octane (R+M)/2
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity16.6 quarts (15.75 liters)
Emission ControlThree-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 DescriptionInline six-cylinder turbocharged, intercooled diesel
Displacement408 cu. in. (6,690 cu. cm)
Bore x Stroke4.21 x 4.88 (107 x 124)
Valve SystemPushrod-operated overhead valves, 24 valves, hydraulic lifters
Fuel InjectionElectronic high-pressure common rail
ConstructionCompacted graphite iron (CGI) block cast-iron head
Compression Ratio16.2:1
Power360 hp (268 Kw) @ 2,800 rpm (68RFE automatic transmission)
Torque800 lb.-ft. (1,084 N•m) @ 1,800 rpm
Maximum High-Idle Engine Speed3,200 rpm
Fuel RequirementUltra-low sulfur diesel
Oil Capacity12.0 quarts (11.3 liters) with filter
Coolant Capacity23.8 quarts (22.50 liters)
Emission ControlsSelective catalytic reduction (SCR)
Transmissions34 specs
Aisin AS69RC — automatic six-speed
Availability6.7-liter diesel
DescriptionThree planetary gear sets, full electronic control, electronically controlled converter clutch
Axle Ratios3.73, 4.10, 4.44, 4.89
PTO CapabilityLeft or right
ZF 8HP75 — automatic eight-speed (3500 only)
Availability6.4-liter HEMI V-8
DescriptionAdaptive 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 Ratios4.10
Aisin AS66RC — automatic six-speed
Availability6.4-liter HEMI V-8
DescriptionThree planetary gear-sets, one overrunning clutch, full electronic control, electronically controlled converter clutch
Axle Ratios4.44, 4.89
PTO CapabilityLeft or right
Gear ratiosAisin AS69RC — automatic six-speedZF 8HP75 — automatic eight-speed (3500 only)Aisin AS66RC — automatic six-speed
1st3.754.713.23
2nd2.003.141.84
3rd1.342.101.41
4th1.001.671.00
5th0.771.290.82
6th0.631.000.63
7th—0.84—
8th—0.67—
Reverse3.543.304.44

— not listed or not applicable

Transfer case5 specs
BW 44-46, BW 44-47BW 44-48, 44-49
AvailabilityOptional on 6.7-liter diesel and 6.4-liter HEMI V-86.7-liter diesel high output
TypePart-time – BW 44-47 manual shift and BW 44-46 electric shift44-48 part-time with electric shift, 44-49 part-time manual shift
Operating Modes2WD; 4WD High; Neutral; 4WD Low2WD; 4WD High; Neutral; 4WD Low
Low-Range Ratio2.642.64
Center DifferentialNoneNone
Axles2 specs
Front (4x4)
AAM 10.5-in. beam front axle with center disconnect
Rear
AAM 12.0-in. beam rear axle
Electrical system4 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
Alternator: Rating
Dual (220 and 160) optional on 6.4-liter HEMI V-8
Alternator: 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; Dual Group 65, maintenance-free, 730 CCA on 6.7-liter diesel
Suspension 3500 (includes 10,000 GVWR model)2 specs
4x24x4
FrontThree-link with track bar, coil springs, stabilizer bar, solid axleThree-link with track bar, coil springs, stabilizer bar, solid axle
RearTwo-stage longitudinal leaf solid axleTwo-stage longitudinal leaf solid axle
Suspension 4500/55002 specs
4x24x4
FrontFive-link with track bar, coil springs, stabilizer bar, solid axleFive-link with track bar, coil springs, stabilizer bar, solid axle
RearTwo-stage longitudinal leaf solid axleTwo-stage longitudinal leaf solid axle
Brakes 35003 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
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
4x24x4
Regular Cab 60 CA SRW (3500)
Wheelbase (nominal)143.3 (3,639)143.3 (3,639)
Track Width – Front67.6 (1,716)67.6 (1,716)
Track Width – Rear67.0 (1,703)67.0 (1,703)
Overall Length235.3 (5,977)235.3 (5,977)
Overall Width82.6 (2,099)82.6 (2,099)
Overall Height80.9 (2,055)80.9 (2,055)
Axle to Ground – Front9.4 (240)9.4 (240)
Axle to Ground – Rear8.7 (221)8.7 (221)
Rear of Frame to Ground36.3 (922)36.3 (922)
Approach Angle (degrees)22.222.2
Departure Angle (degrees)27.527.5
Ramp Breakover Angle w/o Skid Plate (degrees)21.821.8
Ramp Breakover Angle w/ Skid Plate (degrees)—21.8
Ground Clearance w/o Skid Plate13.7 (347)13.7 (347)
Ground Clearance w/ Skid Plate—13.7 (347)
Crew Cab 60 CA SRW (3500)
Wheelbase (nominal)172.2 (4,373)172.2 (4,373)
Track Width – Front67.6 (1,716)67.6 (1,716)
Track Width – Rear67.0 (1,703)67.0 (1,703)
Overall Length264.2 (6,710)264.2 (6,710)
Overall Width82.6 (2,099)82.6 (2,099)
Overall Height80.6 (2,046)80.6 (2,046)
Axle to Ground – Front9.4 (238)9.4 (238)
Axle to Ground – Rear8.7 (220)8.7 (220)
Rear of Frame to Ground35.7 (906)35.7 (906)
Approach Angle (degrees)22.522.5
Departure Angle (degrees)26.726.7
Ramp Breakover Angle w/o Skid Plate (degrees)19.619.6
Ramp Breakover Angle w/ Skid Plate (degrees)—19.6
Ground Clearance w/o Skid Plate13.3 (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 – Front69.6 (1,768)69.6 (1,768)
Track Width – Rear71.9 (1,825)71.9 (1,825)
Overall Length235.3 (5,977)235.3 (5,977)
Overall Width92.2 (2,341)92.2 (2,341)
Overall Height80.2 (2,036)80.2 (2,036)
Axle to Ground – Front8.6 (219)8.6 (219)
Axle to Ground – Rear8.0 (208)8.0 (208)
Rear of Frame to Ground35.9 (911)35.9 (911)
Approach Angle (degrees)20.420.4
Departure Angle (degrees)26.926.9
Ramp Breakover Angle w/o Skid Plate (degrees)20.720.7
Ramp Breakover Angle w/ Skid Plate (degrees)—20.7
Ground Clearance w/o Skid Plate12.9 (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 – Front69.6 (1,768)69.6 (1,768)
Track Width – Rear71.9 (1,825)71.9 (1,825)
Overall Length259.3 (6,586)259.3 (6,586)
Overall Width92.2 (2,341)92.2 (2,341)
Overall Height79.9 (2,029)79.9 (2,029)
Axle to Ground – Front8.7 (222)8.7 (222)
Axle to Ground – Rear8.0 (203)8.0 (203)
Rear of Frame to Ground34.9 (886)34.9 (886)
Approach Angle (degrees)21.021.0
Departure Angle (degrees)25.725.7
Ramp Breakover Angle w/o Skid Plate (degrees)17.118.1
Ramp Breakover Angle w/ Skid Plate (degrees)—18.1
Ground Clearance w/o Skid Plate12.7 (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 – Front69.6 (1,768)69.6 (1,768)
Track Width – Rear71.9 (1,825)71.9 (1,825)
Overall Length264.2 (6,710)264.2 (6,710)
Overall Width92.2 (2,341)92.2 (2,341)
Overall Height79.6 (2,022)79.6 (2,022)
Axle to Ground – Front8.5 (217)8.5 (217)
Axle to Ground – Rear8.0 (202)8.0 (202)
Rear of Frame to Ground34.3 (872)34.3 (872)
Approach Angle (degrees)21.021.0
Departure Angle (degrees)25.125.1
Ramp Breakover Angle w/o Skid Plate (degrees)18.018.0
Ramp Breakover Angle w/ Skid Plate (degrees)—18.0
Ground Clearance w/o Skid Plate12.4 (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 CA84 CA
Wheelbase (nominal)144.6 (3,674)168.7 (4,284)
Track Width – Front77.1 (1,958)77.1 (1,958)
Track Width – Rear73.6 (1,870)73.6 (1,870)
Overall Length236.3 (6,001)260.2 (6,610)
Overall Width93.2 (2,368)93.2 (2,368)
Overall Height81.7 (2,075)81.5 (2,071)
Axle to Ground – Front8.7 (221)8.7 (221)
Axle to Ground – Rear8.0 (202)8.0 (202)
Rear of Frame to Ground36.4 (925)36.2 (920)
Approach Angle (degrees)25.425.7
Departure Angle (degrees)27.727.5
Ramp Breakover Angle w/o Skid Plate (degrees)22.620.8
Ramp Breakover Angle w/ Skid Plate (degrees)22.620.8
Ground Clearance w/o Skid Plate13.7 (348)13.5 (344)
Ground Clearance w/ Skid Plate13.7 (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 CA120 CA
Wheelbase (nominal)192.6 (4,893)204.4 (5,191)
Track Width – Front77.1 (1,958)77.1 (1,958)
Track Width – Rear73.6 (1,870)73.6 (1,870)
Overall Length284.3 (7,221)296.3 (7,525)
Overall Width93.2 (2,368)93.2 (2,368)
Overall Height81.5 (2,071)81.4 (2,068)
Axle to Ground – Front8.7 (221)8.7 (221)
Axle to Ground – Rear8.1 (206)8.1 (206)
Rear of Frame to Ground36.9 (936)36.6 (930)
Approach Angle (degrees)25.725.8
Departure Angle (degrees)28.227.6
Ramp Breakover Angle w/o Skid Plate (degrees)20.219.6
Ramp Breakover Angle w/ Skid Plate (degrees)20.219.6
Ground Clearance w/o Skid Plate13.6 (345)13.5 (342)
Ground Clearance w/ Skid Plate13.6 (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 CA84 CA
Wheelbase (nominal)173.5 (4,407)197.5 (5,017)
Track Width – Front77.1 (1,958)77.1 (1,958)
Track Width – Rear73.6 (1,870)73.6 (1,870)
Overall Length265.2 (6,735)289.2 (7,345)
Overall Width93.2 (2,368)93.2 (2,368)
Overall Height81.4 (2,068)81.4 (2,068)
Axle to Ground – Front8.7 (220)8.6 (219)
Axle to Ground – Rear8.1 (206)8.1 (206)
Rear of Frame to Ground35.5 (901)36.7 (932)
Approach Angle (degrees)25.425.5
Departure Angle (degrees)27.328.0
Ramp Breakover Angle w/o Skid Plate (degrees)20.419.9
Ramp Breakover Angle w/ Skid Plate (degrees)20.419.9
Ground Clearance w/o Skid Plate13.5 (342)13.5 (342)
Ground Clearance w/ Skid Plate13.5 (342)13.5 (342)
AccommodationsRegular Cab 60 CA SRW (3500)Accommodations: Regular Cab 60 CA SRW (3500)8 specs
4x24x4
Seating Capacity, F/R3/–3/–
Front – Headroom39.8 (1.011)39.8 (1.011)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Interior Volume: Front – cu. ft. (cu. m)62.2 (1.8)62.2 (1.8)
Accommodations42 specs
4X24X4
Crew Cab 60 CA SRW (3500)
Seating Capacity, F/R3/33/3
Front – Headroom40.9 (1,038)40.9 (1,038)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Rear – Headroom39.8 (1,010)39.8 (1,010)
Rear – Legroom40.2 (1,022)40.2 (1,022)
Rear – Shoulder Room65.6 (1,666)65.6 (1,666)
Rear – Hip Room62.7 (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/R3/–3/–
Front – Headroom39.8 (1,011)39.8 (1,011)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Interior Volume: Front – cu. ft. (cu. m)62.2 (1.8)62.2 (1.8)
Regular Cab 84 CA DRW (3500)
Seating Capacity, F/R3/–3/–
Front – Headroom39.8 (1,011)39.8 (1,011)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Interior Volume: Front – cu. ft. (cu. m)62.2 (1.8)62.2 (1.8)
Crew Cab 60 CA DRW (3500)
Seating Capacity, F/R3/33/3
Front – Headroom40.9 (1,038)40.9 (1,038)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Rear – Headroom39.8 (1,010)39.8 (1,010)
Rear – Legroom40.2 (1,022)40.2 (1,022)
Rear – Shoulder Room65.6 (1,666)65.6 (1,666)
Rear – Hip Room62.7 (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)
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 CA84 CA
Seating Capacity, F/R3/–3/–
Front – Headroom39.8 (1,011)38.9 (1,038)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Interior Volume: Front – cu. ft. (cu. m)62.2 (1.8)62.2 (1.8)
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 CA120 CA
Seating Capacity, F/R3/–3/–
Front – Headroom39.8 (1,011)39.8 (1,011)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
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 CA84 CA
Seating Capacity, F/R3/33/3
Front – Headroom40.9 (1,038)40.9 (1,038)
Front – Legroom40.9 (1,040)40.9 (1,040)
Front – Shoulder Room65.9 (1,675)65.9 (1,675)
Front – Hip Room62.9 (1,598)62.9 (1,598)
Front – Seat Travel9.1 (230)9.1 (230)
Front – Recliner Range (degrees)59.059.0
Rear – Headroom39.8 (1,010)39.8 (1,010)
Rear – Legroom40.2 (1,022)40.2 (1,022)
Rear – Shoulder Room65.6 (1,666)65.6 (1,666)
Rear – Hip Room62.7 (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: 2020 Ram Chassis Cab Specifications (Stellantis media site).

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.

2020 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 (2020 Ram Chassis Cab Specifications). Pressure and spare notes from the owner's manual.

2020 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.

Schedule

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
Service20k2 yr30k3 yr40k4 yr50k5 yr60k6 yr70k7 yr80k8 yr90k9 yr100k10 yr110k11 yr120k12 yr130k13 yr140k14 yr150k15 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 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. Rotate 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 if using in dusty or off-road conditions. Replace 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 park 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
Compare with another year

2020 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

SystemApplies toCapacity
All engines
Fuel tank (approximate)Standard rear tank52 gal197 L
Optional midship tank22 gal83 L
Diesel exhaust fluid tank (approximate)8.7 gal33 L
6.4L engine
Engine oil with filter7 qt6.6 L
Cooling system16.6 qt15.7 L
6.7L diesel engine
Engine oil with filterTurbo Diesel engine12 qt11.4 L
Cooling systemTurbo Diesel engine, 3500 with AS69RC22.5 qt21.3 L
Turbo Diesel engine, Chassis Cab 3500/4500 with AS69RC22.3 qt21.1 L
Turbo Diesel engine, Chassis Cab 5500 with AS69RC22.8 qt21.6 L

Engine fluids

ComponentFluid / gradeMopar product
6.4L engine
Engine coolantGas engine
OAT (Organic Additive Technology) coolant, 10-year/150,000-mile formulaMS.90032
Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oilGas engine
SAE 0W-40 full synthetic, API SNMS-12633
Pennzoil Ultra 0W-40 or equivalent Mopar engine oil
Engine oil filterGas engine
Mopar engine oil filter
Mopar Engine Oil Filters
Spark plugsGas engine
Mopar spark plugs
Mopar Spark Plugs
6.7L diesel engine
Engine coolantTurbo Diesel engine
OAT (Organic Additive Technology) coolant, 10-year/150,000-mile formula
Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oilTurbo Diesel engine, ambient above 0 F (-18 C)
SAE 10W-30, API CK-4 requiredMS-10902 (Cummins CES 20081 also acceptable)
Mopar, Shell Rotella or Shell Rimula 10W-30 or equivalent
Engine oilTurbo Diesel engine, ambient below 0 F (-18 C)
SAE 5W-40 synthetic, API CK-4 requiredMS-10902
Mopar, Shell Rotella or Shell Rimula 5W-40 or equivalent
Engine oil filterTurbo Diesel engine
Mopar engine oil filter
Mopar Engine Oil Filters
Fuel filtersTurbo Diesel engine
3 micron (engine-mounted) and 5 micron (chassis-mounted) filters with water separation
Mopar Fuel Filter
Crankcase ventilation filterTurbo Diesel engine
Mopar CCV filter
Mopar CCV Filter
Diesel exhaust fluidTurbo Diesel engine
DEF API certified to ISO 22241
Mopar Diesel Exhaust Fluid

Chassis fluids & lubricants

ComponentFluid / gradeMopar product
Automatic transmissionGas engine, eight-speed
ZF 8 and 9 speed ATF
Mopar ZF 8&9 Speed ATF
Automatic transmissionGas engine, six-speed
ASRC automatic transmission fluid
Mopar ASRC Automatic Transmission Fluid
Transfer caseGas engine
Borg Warner 44-44 and 44-45 transfer case lubricant
Mopar Transfer Case Lubricant for Borg Warner 44-44 and 44-45
Front and rear axleGas engine
SAE 75W-85 HD synthetic axle lubricant, GL-5; limited slip additive required for limited slip axles
Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant
Brake master cylinderGas engine
DOT 3, SAE J1703
Mopar DOT 3
Power steering reservoirGas engine
Power steering fluid +4 or ATF+4 automatic transmission fluid
Mopar Power Steering Fluid +4; Mopar ATF+4
Automatic transmission6.7L Turbo Diesel engine
ASRC automatic transmission fluid
Mopar ASRC Automatic Transmission Fluid
Transfer case6.7L Turbo Diesel engine
BW44-44 transfer case fluid
Mopar BW44-44 Transfer Case Fluid
Front and rear axle6.7L Turbo Diesel engine
SAE 75W-85 HD synthetic axle lubricant, GL-5; limited slip additive required for limited slip axles
Ram SAE 75W-85 HD GL-5 Synthetic Axle Lubricant
Brake master cylinder6.7L Turbo Diesel engine
DOT 3, SAE J1703
Mopar DOT 3

Fuel

EngineMinimumEthanol / biodiesel
6.4L gas engine
87 octane Regular unleaded (89 for optimum performance and fuel economy)
Up to 15% (E15); no E85 or methanol
6.7L Turbo Diesel engine
Ultra-low-sulfur diesel (15 ppm max)
Up to B5 (ASTM D-975); up to B20 (ASTM D-7467) only on Chassis Cab ordered or reconfigured with B20 capability

Wheel lug nut torque

WheelsTorque
Cone typeThread M14 x 1.5022 mm socket130 ft‑lb (176 N·m)
Flanged typeThread M14 x 1.5022 mm socket129 ft‑lb (175 N·m)
  • Cooling capacities for the 6.7L diesel vary by model: 3500 22.5 qt, Chassis Cab 3500/4500 22.3 qt, Chassis Cab 5500 22.8 qt.
  • Fuel tank sizes are approximate; the midship tank is optional.
  • Dual wheels are flat-mounted and center-piloted; the lug nuts are two-piece, so clean the hex-to-washer interface when rotating tires.
  • Retorque lug nuts after 25 miles (40 km); use 10-bolt or 8-bolt pattern star sequence.
  • Wheel torque table lists cone and flanged nut types; 8 and 10 bolt patterns shown in the manual.

Source: Owner's manual on Mopar.com. Always confirm with the manual for your exact vehicle.

2020 Ram Chassis Cab recalls & safety

What the U.S. government's National Highway Traffic Safety Administration (NHTSA) has on file for the 2020 Ram Chassis Cab: 10 recall campaigns and 12 owner complaints. Fetched November 8, 2026.

NHTSA hasn't published 5-Star Safety Ratings for the 2020 Ram Chassis Cab.

Recalls (10)

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.

Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittingsOctober 11, 2022 · Campaign 22V759000

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 4500 and 5500 Cab Chassis vehicles. The rear brake hose inside diameter may be too small, which could cause the hose to rupture. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 106, "Brake Hoses."

Risk: A brake hose rupture can cause a loss of braking ability, increasing the risk of a crash.

Fix: Dealers will replace the rear brake hoses, free of charge. Owner notification letters were mailed April 27, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZA5.

Campaign 22V759000 on NHTSA.gov
Visibility: windshield wiper/washer: linkagesJanuary 27, 2022 · Campaign 22V035000

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 vehicles, Ram 3500 Cab Chassis, 4500 Cab Chassis, 5500 Cab Chassis and 3500 Cab Chassis with a gross vehicle weight rating (GVWR) of less than 10,000 lbs. The windshield wiper arms may loosen, possibly causing the wipers to function improperly and reduce the driver's visibility in certain weather conditions.

Risk: Reduced visibility increases the risk of a crash.

Fix: Dealers will tighten the wiper nuts, free of charge. Owner notification letters were mailed February 15, 2022. This recall is an expansion of recall number 20V-208. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Z08.

Campaign 22V035000 on NHTSA.gov
Fuel system, diesel: delivery: fuel pumpNovember 12, 2021 · Campaign 21V880000

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500, 3500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. The High Pressure Fuel Pump (HPFP) may fail, resulting in a sudden engine stall without warning.

Risk: An engine stall increases the risk of a crash.

Fix: Dealers will replace the HPFP, update the Powertrain Control Module (PCM) software, and inspect and replace additional fuel system components as necessary, free of charge. Interim owner notification letters to inform owners of the safety recall were mailed on January 4, 2022.

Campaign 21V880000 on NHTSA.gov
Engine and engine cooling: engine: oil/lubricationJune 10, 2021 · Campaign 21V439000

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 3500, 4500, and 5500 cab chassis vehicles equipped with a Cummins 6.7L High Output engine. The engine calibration software may not warn about low oil volume.

Risk: Low oil can damage the engine, causing an oil leak or a punctured engine block, increasing the risk of a fire.

Fix: Dealers will update the engine calibration software, free of charge. Owner notification letters were mailed June 25, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y21.

Campaign 21V439000 on NHTSA.gov
Wheels: 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.gov
Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittingsJanuary 26, 2021 · Campaign 21V023000

Excellance, Inc (Excellance) is recalling certain 2019-2020 Excellance-modified RAM 4500/5500 vehicles to be equipped with CLASS Suspension Systems. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.

Risk: A worn rear brake caliper flexible line may cause brake fluid leakage which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.

Fix: Excellance will notify owners, and dealers will install a kit to remedy any damage and to prevent any future damage, free of charge. The manufacturer has not yet provided a schedule for recall notification. Owners may contact Excellance customer service at 1-800-882-9799.

Campaign 21V023000 on NHTSA.gov
Show 4 older recalls
Suspension: rearJanuary 20, 2021 · Campaign 21V016000

Custom Truck And Body Works is recalling certain 2020 Dodge 4500 and 5500 vehicles. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.

Risk: A worn rear brake caliper flexible line may cause brake fluid leakage, which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.

Fix: Custom Truck And Body Works will notify owners, and dealers will repair the affected suspension systems, and rear brake caliper flexible line, free of charge. Owners may contact Custom Truck And Body Works customer service at 1-706-553-9178. Custom Truck And Body Works number for this recall is 20E-031.

Campaign 21V016000 on NHTSA.gov
Service brakes, hydraulic: power assist: vacuum: hoses, lines/piping, and fittingsJanuary 13, 2021 · Campaign 21V008000

Braun Northwest (Braun Northwest) is recalling certain 2019-2020 RAM 4500/5500 vehicles equipped with Liquid Spring rear suspension systems. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.

Risk: A worn rear brake line may leak fluid, resulting in a partial or complete loss of the rear brakes, increasing the risk of a crash.

Fix: Braun Northwest will notify owners, and dealers will install a repair kit to each rear caliper and modify the rear brake caliper flexible line mounting. Any worn rear brake caliper flexible lines will be replaced as needed, free of charge. The recall began June 8, 2020.

Campaign 21V008000 on NHTSA.gov
Engine and engine cooling: engine: oil/lubricationAugust 27, 2020 · Campaign 20V511000

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 3500, 4500 and 5500 cab chassis built with a Cummins 6.7L High Output engine. Inadequate warmup protection can cause a lack of oil film on the engine connecting rod bearings while the engine is reaching operating temperature. This can result in engine damage and connecting rod failure, which could potentially puncture the engine block.

Risk: A damaged engine block may leak oil, which can contact hot engine or exhaust components, increasing the risk of a fire.

Fix: Chrysler will notify owners, and dealers will flash the engine calibration software to enhance the engine warm up protection, free of charge. The recall began September 10, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is W57.

Campaign 20V511000 on NHTSA.gov
Suspension: rearMay 13, 2020 · Campaign 20E031000

LiquidSpring LLC (LiquidSpring) is recalling certain Compressible Liquid Adaptive Suspension Systems (C.L.A.S.S.), part numbers DS135RS3A, DS135RS3AF, DS135RS3-DM, sold for use with 2019-2020 RAM 4500 and 5500 vehicles. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.

Risk: A worn rear brake caliper flexible line may cause brake fluid leakage which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.

Fix: LiquidSpring has notified the purchasers, and the affected vehicle manufacturers will file recalls to have their dealers inspect the rear brake caliper flexible lines for wear and install a kit to modify the rear brake caliper flexible line mounting, and if necessary, a kit to replace worn brake lines, free of charge.

Campaign 20E031000 on NHTSA.gov

Owner complaints by component

Complaints
12
Crashes
1
Fires
1
Injuries
4
  • Service brakes3
  • Hydraulic2
  • Seat belts2
  • Unknown or other2
  • Visibility2
  • Air bags1
  • Diesel1
  • Forward collision avoidance1

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.

2020 Ram Chassis Cab owner's manuals & publications

The manufacturer's owner's manual, quick guides, radio manuals, supplements and warranty booklets for the 2020 model year.

Salt, snow and hills: the data

The 2020 Ram Chassis Cab against salt, snow and steep grades

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 2020 Ram Chassis Cab lines that matter for a Bowling Green winter, a spring of broken pavement, a boat on the hitch or a long descent in the hills.

The oil grade on a January morning

Factory oil: SAE 0W-40 (6.4L gas) and SAE 10W-30 or 5W-40 (6.7L Turbo Diesel), 7 qt (6.4L) and 12 qt (6.7L Turbo 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.

Cranking power for a lake-effect morning

Rated battery output: 730 cold-cranking amps, measured at 0°F. A single-digit night in Traverse City or Fort Wayne cuts what the battery can deliver just as the stiff engine asks more of the starter. Past three winters, an October load test tells you more than the date sticker. Charging comes from a 160- to 220-amp alternator.

Which wheels do the pulling

Factory drive configurations for 2020: rear-wheel drive and four-wheel drive. The same trim name can come with more than one drive system, so on a used Chassis Cab confirm it from the window sticker or a VIN decode rather than the badge. In west Michigan, where lake-effect bands can pile up several inches of snow in an hour, driving both axles is what gets a loaded vehicle up an icy driveway.

Trailer duty in the schedule

The schedule lists axle fluid, transfer case fluid and automatic transmission fluid service for frequent trailer towing, starting at 20,000 miles. Whether it is a fishing boat headed for the Ohio River or a pop-up camper bound for the Smokies, the extra heat of towing ages these fluids faster, most of all on long July climbs.

Clearance for frozen ruts and hollow roads

Listed ground clearance: 12.4 to 13.7 inches. Two places in this region test it. One is a snowbelt side street after a squall, where frozen ruts form before the plow comes back. The other is a gravel road up an Appalachian hollow, where a high crown and washouts can catch a low underbody. Knowing the figure helps you choose a line instead of guessing.

Diesel through a Great Lakes winter

Cold-fuel guidance in the owner data: climatized fuel or No. 1 ULSD in extreme cold. Paraffin in summer-grade diesel clouds as it chills and can plug the fuel filter, and a Great Lakes January gets cold enough for that. High-volume truck stops turn over fuel quickly, so buying there in winter improves the odds of a properly winterized blend. The DEF tank holds 8.7 gal.

Capacities, ratings and service intervals: Stellantis data for the 2020 Chassis Cab. The Great Lakes reading of them is independent and is not factory or dealer advice.

2020 Ram Chassis Cab questions

How much oil does the 2020 Ram Chassis Cab take?

With a filter change: 6.4L engine, 7 qt / 6.6 L and 6.7L Turbo 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 2020 Ram Chassis Cab use?

6.4L gas engine: SAE 0W-40 full synthetic, API SN (MS-12633); 6.4L gas engine: Mopar engine oil filter; 6.7L Turbo Diesel engine, ambient above 0 F (-18 C): SAE 10W-30, API CK-4 required (MS-10902 (Cummins CES 20081 also acceptable)); 6.7L Turbo Diesel engine, ambient below 0 F (-18 C): SAE 5W-40 synthetic, API CK-4 required (MS-10902); and 6.7L Turbo Diesel engine: Mopar engine oil filter.

When is the first scheduled maintenance on the 2020 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. Oil changes in between follow the oil-change indicator.

Where can I find the 2020 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 2020 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.

What changed on the 2020 Ram Chassis Cab?

Body styles dropped: Regular / Crew Cab and Crew Cab; New option package: Tradesman Level 1 Equipment Group; Packages no longer offered: L1 Equipment Group and P2 Equipment Group; New to the equipment chart: Front/rear park assist and Rear park assist.

Does the 2020 Ram Chassis Cab have recalls?

NHTSA lists 10 safety recall campaigns for the 2020 Ram Chassis Cab. The most recent: Service brakes, hydraulic: foundation components (October 2022), Visibility: windshield wiper/washer (January 2022), and Fuel system, diesel: delivery (November 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 2020 Ram Chassis Cab?

Owners have filed 12 complaints about the 2020 Ram Chassis Cab with NHTSA. The components named most often are service brakes (3), hydraulic (2), and seat belts (2). 1 complaint involved a crash and 1 complaint 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.