Ram Chassis Cab · Model year 2021

2021 Ram Chassis Cab specs, maintenance & manuals

Owner and shopper reference for the 2021 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
Schedule covers: 150k miles
Publications: 15

2021 Ram Chassis Cab specs & features

Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2021 specification sheet.

General information+

Vehicle Type	Regular Cab, Crew Cab: 4x2, 4x4
Assembly Plant	Saltillo Truck Assembly Plant, Coahuila, Mexico

Body/chassis+

	4x2	4x4
Layout	Longitudinal, front engine	Longitudinal, front engine, transfer case
Construction	Ladder-type frame, steel cab	Ladder-type frame, steel cab

Engine: 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

Engine: 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

Engine: 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)

Transmission: Aisin AS69RC — automatic six-speed+

Availability	6.7-liter diesel
Description	Three planetary gear sets, full electronic control, electronically controlled converter clutch
1st	3.75
2nd	2.00
3rd	1.34
4th	1.00
5th	0.77
6th	0.63
Reverse	3.54
Axle Ratios	3.73, 4.10, 4.44, 4.89
PTO Capability	Left or right

Transmission: 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
1st	4.71
2nd	3.14
3rd	2.10
4th	1.67
5th	1.29
6th	1.00
7th	0.84
8th	0.67
Reverse	3.30
Axle Gear Ratios	4.10

Transmission: 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
1st	3.23
2nd	1.84
3rd	1.41
4th	1.00
5th	0.82
6th	0.63
Reverse	4.44
Axle Ratios	4.44, 4.89
PTO Capability	Left or right

Transfer case: BW 44-46, BW 44-47+

Availability	Optional on 6.7-liter diesel and 6.4-liter HEMI V-8
Type	Part-time – BW 44-47 manual shift and BW 44-46 electric shift
Operating Modes	2WD; 4WD High; Neutral; 4WD Low
Low-Range Ratio	2.64
Center Differential	None

Transfer case: BW 44-48, 44-49+

Availability	6.7-liter diesel high output
Type	44-48 part-time with electric shift, 44-49 part-time manual shift
Operating Modes	2WD; 4WD High; Neutral; 4WD Low
Low-Range Ratio	2.64
Center Differential	None

Axles+

Front (4x4)	AAM 10.5-in. beam front axle with center disconnect
Rear	AAM 12.0-in. beam rear axle

Electrical system+

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)+

	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 4500/5500+

	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 3500+

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 4500/5500+

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

Steering+

Power Assist

Hydraulic Assist

Exterior dimensions: Regular cab 60 CA SRW (3500)+

	4x2	4x4
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	N/A	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)	N/A	21.8

Exterior dimensions: Crew cab 60 CA SRW (3500)+

	4x2	4x4
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)	N/A	19.6
Ground Clearance w/o Skid Plate	13.3 (339)	13.3 (339)
Ground Clearance w/ Skid Plate	N/A	13.3 (339)

Exterior dimensions: Regular cab 60 CA DRW (3500)+

	4x2	4x4
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)	N/A	20.7
Ground Clearance w/o Skid Plate	12.9 (328)	12.9 (328)
Ground Clearance w/ Skid Plate	N/A	12.9 (328)

Exterior dimensions: Regular cab 84 CA DRW (3500)+

	4x2	4x4
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)	N/A	18.1
Ground Clearance w/o Skid Plate	12.7 (322)	12.7 (322)
Ground Clearance w/ Skid Plate	N/A	12.7 (322)

Exterior dimensions: Crew cab 60 CA DRW (3500)+

	4x2	4x4
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)	N/A	18.0
Ground Clearance w/o Skid Plate	12.4 (316)	12.4 (316)
Ground Clearance w/ Skid Plate	N/A	12.4 (316)

Exterior dimensions: Regular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA+

	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 dimensions: Regular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CA+

	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 dimensions: Crew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA+

	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)

Accommodations: Regular cab 60 CA SRW (3500)+

	4x2	4x4
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)

The sheet prints this headroom as 39.8 (1.011) with a period; the other regular cab sheets print 1,011.

Accommodations: Crew cab 60 CA SRW (3500)+

	4x2	4x4
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)

Accommodations: Regular cab 60 CA DRW (3500)+

	4x2	4x4
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)

Accommodations: Regular cab 84 CA DRW (3500)+

	4x2	4x4
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)

Accommodations: Crew cab 60 CA DRW (3500)+

	4x2	4x4
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)

Accommodations: Regular cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA+

	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.

Accommodations: Regular cab 4x2 and 4x4 (4500/5500), 108 CA and 120 CA+

	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)

Accommodations: Crew cab 4x2 and 4x4 (4500/5500), 60 CA and 84 CA+

	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.

Only rows that differ

Showing 51 of 122 features. ✓ Standard OptionalPkg Part of a package— Not available

Feature	Tradesman	SLT	Laramie	Limited
Configuration
3500: Body ModelRegular Cab — 60-in. CA (143.5-in. wheelbase)	✓	✓	—	—
Regular Cab — 84-in. CA (167.5-in. wheelbase) (N/A with 10,000-lb. GVWR)	✓	✓	—	—
Crew Cab — 60-in. CA (172.4-in. wheelbase)			✓	✓
4x2	✓	✓	✓	✓
4x4
4500/5500: Body ModelRegular Cab — 60-in. CA (144.5-in. wheelbase)	✓	✓	—	—
Regular Cab — 84-in. CA (168.5-in. wheelbase)	✓	✓	—	—
Regular Cab — 108-in. CA (192.5-in. wheelbase)	✓	✓	—	—
Regular Cab — 120-in. CA (204.5-in. wheelbase)	✓	✓	—	—
Crew Cab — 60-in. CA (173.5-in. wheelbase)			✓	✓
Crew Cab — 84-in. CA (197.4-in. wheelbase)			✓	✓
4x2	✓	✓	✓	✓
4x4
Interior
Instrument Cluster DisplaysCluster 3.5-in. thin-film transistor (TFT) black and white Display	✓	✓	—	—
Cluster 3.5-in. TFT color display	—	Pkg	—	—
Cluster 7.0-in. TFT color display	Pkg	Pkg	✓	✓
Ram Telematics System by Telogis
Vehicle system interface module (VSIM)	✓	✓	✓	✓
Uconnect Multimedia
Uconnect Voice Command with Bluetooth	✓	✓	✓	✓
CompassCompass display in the radio (Tradesman availability only with optional 5.0-in. radio)	Pkg	✓	✓	✓
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)	✓	✓	✓	✓
Middle: 2.5-amp charge only single USB port (located in center console or armrest)	✓	✓	✓	✓
ConnectivityRear: Dual remote USB port 2 A/C pairs; one pair fully functional, one pair charge only (packaged with Luxury Group)	—	Pkg	✓	✓
Auxiliary headphone jack for mobile devices	✓	✓	✓	✓
Wireless charging pad (includes CD player; packaged with Laramie)	—	—	Pkg	✓
Accessory delay	✓	✓	✓	✓
Auxiliary outlets (one battery and one ignition-fed)	✓	✓	✓	✓
Power115-volt auxiliary power outlet, instrument panel-mounted (Tradesman option) (packaged with SLT)		Pkg	✓	✓
115-volt auxiliary power outlet, rear facing, (Crew Cab only) (packaged with SLT)	—	Pkg	✓	✓
400-watt inverter	Pkg	Pkg	Pkg	Pkg
RadiosUconnect 3.0 (hands-free Bluetooth), associated display	✓	—	—	—
Uconnect 5.0 — AM/FM with 5.0-in. touchscreen display, media hub (USB, Auxiliary), Bluetooth, SiriusXM Radio, associated display		✓	—	—
Uconnect 8.4 — AM/FM with 8.4-in. touchscreen display, media hub (USB, Auxiliary), Uconnect with Bluetooth, SiriusXM Radio, HD radio, associated display	—		✓	—
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)	—		O/P	✓
Uconnect 12.0 — AM/FM/BT/SiriusXM Radio/NAV/HD/CELL, Apple CarPlay and Android Auto, SiriusXM Radio (packaged with Limited)	—	—		O/P
Radio controls, steering wheel-mounted audio controls	Pkg	Pkg	✓	✓
Safety and Security
CameraParkView rear backup camera				✓
Cargo View camera requires 8.4-in. or 12-in. radio, includes LED CHMSL and cargo lamps	—
Auxiliary Remote Camera (Mopar camera available at dealer)	—
Auxiliary Camera Prep, includes vehicle trailer wiring, camera display in radio, 12-pin connector at rear frame rail	—	O/P	O/P	O/P
Surround View camera (five digital cameras)	—	Pkg	Pkg	Pkg
Parking SensorsRear park assist				✓
Front/rear park assist				✓
Safety FeaturesSecurity alarm	—		✓	✓
Backup alarm (audible alarm when vehicle is in reverse)
Lane Departure Warning, (Lane Keep Assist)	Pkg	Pkg	Pkg	Pkg
Adaptive Steering (standalone option)	Pkg	Pkg	P/O	P/O
Adaptive Cruise Control with Stop	Pkg	Pkg	Pkg	Pkg
Ready Alert Braking	✓	✓	✓	✓
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)			✓	✓
Selectable Tire Fill Alert (packaged with 8.4-in. and 12-in. radios on SLT)	—	Pkg	✓	✓
Tire-pressure Information System		✓	✓	✓
Tire-pressure Monitoring Display	✓	✓	✓	✓
Trailer Tire-pressure Monitoring	—
Trailer Reverse Guidance	—	Pkg	Pkg	Pkg
DOT-certified Roadside Safety Kit (DOT fire extinguisher, three reflecting triangles, spare fuses, two red vinyl flags)
Max Speed Settings (65 mph, 70 mph, 77 mph)
Auto High Beam Headlamp Control	Pkg	Pkg	Pkg	✓
Rain Sensing Wipers	Pkg	Pkg	Pkg	✓
Auxiliary Reverse Lamps (packaged with SLT)		O/P	✓	✓
Equipment Packages
Electrical Accessory Group220-amp alternator; Voltage Monitoring Auto Idle Up; Trailer Brake Control
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)
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)		—	—	—
Cold Weather Group (Diesel option)Engine block heater cord; Winter front grille cover
Comfort GroupHeated steering wheel; Leather-wrapped steering wheel and audio controls; Cluster 3.5-in. TFT color display	—		—	—
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		—	—	—
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	—	—		—
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)	—	—		—
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	—	—	—
Premium Lighting GroupLED headlamps; LED fog lamps; Cluster 3.5-in. TFT color display	—		—	—
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)
Tow Technology GroupSurround View camera; Trailer reverse guidance; Auxiliary reverse lamps, mirror-mounted; Power convex mirrors	—
Heavy-Duty Snowplow Prep Group220-amp alternator; Transfer case skid plate; Heavy Duty Front Suspension Group (4500 and 5500)
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	—		—	—
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
Max Payload Package (6.4-liter 5500 only)19,000-lb. GVWR; 19,500-lb. GVWR; 4.89 axle ratio
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			—	—
Rear Interior Trim Delete Group (Regular Cab only)Delete front center seat; Delete rear floor storage tray; Delete cab back trim panel			—	—
15,000-lb. GVWR Package15,000-lb. Gross Vehicle Weight Rating (4500); 4x2, 4x4
16,000 GVWR Package16,000-lb. Gross Vehicle Weight Rating (4500); 4x2, 4x4

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.

SLT over 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

Laramie over 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)

Limited over 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.

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. Engines: ESB.

Your odometer

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 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.
Additional Maintenance
Replace the cabin air filter.
Replace the engine air cleaner filter.
Replace spark plugs. The 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 Interval As Indicated By Oil Change Indicator System

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	US	Metric
Fuel tank (approximate)	Standard rear tank, 6.4L gasoline engine	52 gal	197 L
	Optional midship tank, 6.4L gasoline engine	22 gal	83 L
Engine oil with filter	6.4L gasoline engine	7 qt	6.6 L
Cooling system	6.4L gasoline engine	16.6 qt	15.7 L
Fuel tank (approximate)	Standard rear tank, 6.7L diesel engine	52 gal	197 L
	Optional midship tank, 6.7L diesel engine	22 gal	83 L
Diesel exhaust fluid tank (approximate)	6.7L diesel engine	8.7 gal	33 L
Engine oil with filter	6.7L diesel engine	12 qt	11.4 L
Cooling system	6.7L diesel engine, Chassis Cab 3500/4500 with AS69RC	22.3 qt	21.1 L
	6.7L diesel engine, Chassis Cab 5500 with AS69RC	22.8 qt	21.6 L

Engine fluids

Component	Fluid / grade	Standard	Mopar product
Engine coolant (6.4L gasoline engine)	10 Year/150,000 Mile OAT antifreeze/coolant	—	Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oil (6.4L gasoline engine)	Full synthetic, API SN, SAE 0W-40, all operating temperatures	MS-12633	Pennzoil Ultra 0W-40 or equivalent Mopar engine oil
Engine oil filter (6.4L gasoline engine)	Meets or exceeds SAE/USCAR-36 filter performance requirements	—	Mopar Engine Oil Filter
Engine coolant (6.7L diesel engine)	10 Year/150,000 Mile OAT antifreeze/coolant	—	Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oil (6.7L diesel engine, ambient 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 oil (6.7L diesel engine, ambient below 0 °F (-18 °C))	SAE 5W-40 synthetic, API CK-4 required	MS-10902	Mopar, Shell Rotella or Shell Rimula equivalent
Engine oil filter (6.7L diesel engine)	Meets or exceeds SAE/USCAR-36 filter performance requirements	—	Mopar Engine Oil Filter
Fuel filters (6.7L diesel engine)	3 micron (engine-mounted filter); 5 micron (chassis-mounted filter); must meet manufacturer filtration and water-separation requirements	—	Mopar Fuel Filter
Crankcase ventilation filter (6.7L diesel engine)	CCV filter	—	Mopar CCV Filter
Diesel exhaust fluid (6.7L diesel engine)	API-certified to ISO 22241	—	Mopar Diesel Exhaust Fluid (API Certified) (DEF) or equivalent

Chassis fluids & lubricants

Component	Fluid / grade	Standard	Mopar product
Automatic transmission, 8-speed (6.4L gasoline engine)	ZF 8 & 9 Speed ATF or equivalent	—	Mopar ZF 8 & 9 Speed ATF
Automatic transmission, 6-speed (6.4L gasoline engine)	ASRC automatic transmission fluid or equivalent	—	Mopar ASRC Automatic Transmission Fluid
Transfer case (6.4L gasoline 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 axle (6.4L gasoline 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 cylinder (6.4L gasoline engine)	DOT 3, SAE J1703	—	Mopar DOT 3
Power steering reservoir (6.4L gasoline engine)	Power steering fluid +4 or ATF+4	—	Mopar Power Steering Fluid +4, Mopar ATF+4
Automatic transmission (6.7L diesel engine)	ASRC automatic transmission fluid or equivalent	—	Mopar ASRC Automatic Transmission Fluid
Transfer case (6.7L diesel engine)	BW44-44 transfer case fluid	—	Mopar BW44-44 Transfer Case Fluid
Front and rear axle (6.7L diesel 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 cylinder (6.7L diesel engine)	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	Thread	Socket
Cone type	130 ft-lb (176 N·m)	M14 x 1.50	22 mm
Flanged type	129 ft-lb (175 N·m)	M14 x 1.50	22 mm

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 towing capacity: up to 35,220 lbAll 234 configurations by cab, bed, engine and axle ratio.Open the towing chart →

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

Owner's ManualOwner's manual (PDF)

Quick guides

Quick Start GuideQuick start guide (PDF)

Uconnect & radio

Supplements

Warranty

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.

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.

2027 Chassis Cab overview Research another model Decode a VIN

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.