2021 Ram 2500 6.7L I6 Cummins Diesel towing capacity.

The 2021 6.7L I6 Cummins Diesel tows 14,560 - 20,000 lbs depending on cab, drivetrain, axle ratio, bed length, GVWR, GCWR, and the configurations covered on this page.

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Built from the official Ram 2021 towing guide pages used for this engine page. Citations for 6.7L I6 Cummins Diesel available below.

Towing data

2021 6.7L I6 Cummins Diesel towing capacity by configuration

Each row below is one published configuration from the 2021 Ram towing guide, showing towing capacity, payload, GVWR, and GCWR.

CREW CAB 4x2 TRADESMAN W BOX 6'4" SRW
3.73	10,000 lbs	2,780 lbs	27,700 lbs	20,000 lbs	Base 7,222 lbs Base F/R 4,389 lbs / 2,833 lbs GAWR F/R 5,500 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
CREW CAB 4x2 TRADESMAN W BOX 8'0" SRW
3.73	10,000 lbs	2,640 lbs	27,840 lbs	20,000 lbs	Base 7,361 lbs Base F/R 4,521 lbs / 2,840 lbs GAWR F/R 5,500 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
CREW CAB 4x2 TRADESMAN W RAMBOX 6'4" SRW
3.73	10,000 lbs	2,670 lbs	27,700 lbs	19,240 lbs	Base 7,332 lbs Base F/R 4,360 lbs / 2,972 lbs GAWR F/R 5,500 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
CREW CAB 4x4 TRADESMAN W BOX 6'4" SRW
3.73	10,000 lbs	2,500 lbs	27,980 lbs	20,000 lbs	Base 7,504 lbs Base F/R 4,658 lbs / 2,845 lbs GAWR F/R 5,750 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
CREW CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73	10,000 lbs	2,310 lbs	26,400 lbs	18,230 lbs	Base 7,691 lbs Base F/R 4,817 lbs / 2,874 lbs GAWR F/R 5,750 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
CREW CAB 4x4 TRADESMAN W RAMBOX 6'4" SRW
3.73	10,000 lbs	2,370 lbs	27,980 lbs	18,920 lbs	Base 7,633 lbs Base F/R 4,671 lbs / 2,963 lbs GAWR F/R 5,750 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
MEGA CAB 4x4 BIG HORN W BOX 6'4" SRW
3.73	10,000 lbs	2,040 lbs	24,240 lbs	15,690 lbs	Base 7,956 lbs Base F/R 4,900 lbs / 3,056 lbs GAWR F/R 6,000 lbs / 6,040 lbs	6-Spd Auto 68RFE · BIG HORN	p.1
MEGA CAB 4x4 BIG HORN W RAMBOX 6'4" SRW
3.73	10,000 lbs	1,930 lbs	24,240 lbs	14,560 lbs	Base 8,069 lbs Base F/R 4,890 lbs / 3,180 lbs GAWR F/R 6,000 lbs / 6,040 lbs	6-Spd Auto 68RFE · BIG HORN	p.1
REGULAR CAB 4x2 TRADESMAN W BOX 8'0" SRW
3.73	10,000 lbs	3,160 lbs	27,320 lbs	20,000 lbs Chart max	Base 6,843 lbs Base F/R 4,213 lbs / 2,630 lbs GAWR F/R 5,500 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1
REGULAR CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73	10,000 lbs	2,810 lbs	27,650 lbs	19,990 lbs	Base 7,187 lbs Base F/R 4,514 lbs / 2,674 lbs GAWR F/R 5,750 lbs / 6,000 lbs	6-Spd Auto 68RFE · TRADESMAN	p.1

TONGUE LOAD CONV / 5TH-WHEEL

10% / 15%

Conventional vs. 5th-wheel/gooseneck

TRAILERING HARDWARE EQUIPMENT WEIGHT

75 / 70 / 250 LBS

Conventional / gooseneck / 5th wheel

HITCH THRESHOLDS TRAILER LIMITS

23k / 30k LBS

5th-wheel / gooseneck required above this weight

RATING METHOD STANDARD

SAE J2807

Industry tow-rating standard

VIEW ALL FINE PRINT

FIG. 2021 LOAD Baseline Weights

Weights Ram already counted in every number

Passenger weight: 300 lbs counted for driver + passengers.
Options weight: 100 lbs counted for factory-installed options.
Conventional tongue: 10% of gross trailer weight.
5th-wheel / gooseneck tongue: 15% of gross trailer weight.

FIG. 2021 HITCH Hitch Loading

Hardware weight deducted from payload

Conventional hitch: 75 lbs of equipment weight.
Gooseneck: 70 lbs of equipment weight.
5th wheel: 250 lbs of equipment weight.

FIG. 2021 CALC Payload Formula

How Ram derives payload from base weight

Formula: Payload = GVWR - Base Weight
Values: Published as estimated values.
Rounding: nearest 10 lbs.

FIG. 2021 LIMIT Commercial / Hitch Limits

Chassis-cab and heavy-trailer thresholds

Box-off completion: 80 lbs per foot from end of cab to end of frame.
5th-wheel required over: 23,000 lbs trailer weight.
Gooseneck required over: 30,000 lbs trailer weight.

FIG. 2021 STD Rating Standard

SAE J2807 compliance

Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.

FIG. 2021 WARN Warnings

Manufacturer safety warnings

Payload and Trailer Weight Rating are mutually exclusive.
GAWRs, GVWRs and GCWRs should never be exceeded.
Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight.

FIG. 2021 NOTES Policy Notes

All published notes from the 2021 towing guide

Payload and Max Trailer Weights are ESTIMATED values. p.3
All values are shown in pounds unless otherwise stated. p.3
Payload and Max Trailer Weight values are rounded to the nearest 10lb. p.3
Payload = GVWR - Base Weight p.3
Payload and Trailer Weight Rating are mutually exclusive. p.3
GAWRs, GVWRs and GCWRs should never be exceeded. p.3
Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807. p.3
Passenger Weight = 300 lb p.3
Options Weight = 100 lb p.3
Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel. p.3
Tongue weight: 10 percent of the gross trailer weight for Conventional Hitch, 15 percent of the gross trailer weight for a 5th Wheel or Gooseneck hitch. p.3
Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight. p.3
Box Off Body Completion Weight = 80 lb per foot from end of cab to end of frame p.3
A fifth-wheel hitch is required for trailers over 23,000 lbs. p.3
A Gooseneck hitch is required for trailers over 30,000 lbs. p.3
Maximum Capability p.3

Technical Audit

Data sources

These citations show the Ram guide pages used to build the 2021 6.7L I6 Cummins Diesel engine page.

Show source pages for the 6.7L I6 Cummins Diesel page and supplement gaps

About these numbers

2021 supplement PDFs aren't on this chart

Ram's separate 2021 supplement PDFs aren't included here — if your build depends on them, check your owner's manual or dealer before loading to the max.

DOC_ID: ram-2500 DOCUMENT BASIS

2021 Ram 2500 Diesel Towing Guide

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