2021 Ram 2500 6.7L I6 Cummins Turbo Diesel towing capacity.

The published 2021 6.7L I6 Cummins Turbo Diesel towing rows surfaced here run from 13,560 - 20,000 lbs depending on cab, drivetrain, axle ratio, box 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 Turbo Diesel available below.

2021 Ram 2500
6.7L I6 Cummins Turbo Diesel RANGE
13,560 - 20,000 LBS
PEAK PAYLOAD
3,160 LBS
MAX GCWR
27,980 LBS
TONGUE LOAD CONVENTIONAL / HD
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 over this
RATING METHOD STANDARD
SAE J2807
Document-level towing policy
VIEW ALL GUIDE ASSUMPTIONS
GUIDE FINE PRINT

Calculation assumptions for the 2021 Ram 2500 guide.

These note blocks define the published payload, trailering hardware, and limit notes that govern every row in the supported 2021 Ram 2500 towing charts.

FIG. 2021 LOAD Weight Assumptions

Pre-loaded weights baked into the chart

  • Passenger weight: 300 lbs assumed occupant weight.
  • Options weight: 100 lbs assumed 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 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 fram 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
NOTES: Guide-level assumptions apply to all published towing and payload values. Individual configurations may have additional row-level constraints.
Towing data

2021 6.7L I6 Cummins Turbo 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 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,680 lbs 27,700 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
CREW CAB 4x2 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,640 lbs 27,840 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,530 lbs 27,840 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
CREW CAB 4x2 TRADESMAN W RAMBOX 6'4" SRW
3.73 10,000 lbs 2,670 lbs 27,700 lbs 19,240 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,610 lbs 27,700 lbs 18,820 lbs 6-Speed Auto 68RFE · TRADESMAN
CREW CAB 4x4 TRADESMAN W BOX 6'4" SRW
3.73 10,000 lbs 2,500 lbs 27,980 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,420 lbs 27,980 lbs 19,420 lbs 6-Speed Auto 68RFE · TRADESMAN
CREW CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,310 lbs 26,400 lbs 18,230 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,200 lbs 26,400 lbs 17,290 lbs 6-Speed Auto 68RFE · TRADESMAN
CREW CAB 4x4 TRADESMAN W RAMBOX 6'4" SRW
3.73 10,000 lbs 2,370 lbs 27,980 lbs 18,920 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,300 lbs 27,980 lbs 18,290 lbs 6-Speed Auto 68RFE · TRADESMAN
MEGA CAB 4x4 BIG HORN W BOX 6'4" SRW
3.73 10,000 lbs 2,040 lbs 24,240 lbs 15,690 lbs 6-Speed Auto 68RFE · BIG HORN
3.73 9,900 lbs 1,940 lbs 24,240 lbs 14,690 lbs 6-Speed Auto 68RFE · BIG HORN
MEGA CAB 4x4 BIG HORN W RAMBOX 6'4" SRW
3.73 10,000 lbs 1,930 lbs 24,240 lbs 14,560 lbs 6-Speed Auto 68RFE · BIG HORN
3.73 9,900 lbs 1,830 lbs 24,240 lbs 13,560 lbs 6-Speed Auto 68RFE · BIG HORN
REGULAR CAB 4x2 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 3,160 lbs 27,320 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 3,060 lbs 27,320 lbs 20,000 lbs 6-Speed Auto 68RFE · TRADESMAN
REGULAR CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,810 lbs 27,650 lbs 19,990 lbs 6-Speed Auto 68RFE · TRADESMAN
3.73 9,900 lbs 2,720 lbs 27,650 lbs 19,990 lbs 6-Speed Auto 68RFE · TRADESMAN
Technical Audit

Data sources

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

Show source pages for the 6.7L I6 Cummins Turbo Diesel page
DOC_ID: ram-2500 DOCUMENT BASIS

2021 Ram 2500 Diesel Towing Guide

Audit Scope PAGES: 1-2