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

The 2021 6.7L I6 Cummins Turbo Diesel tows 13,560 - 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 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
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 Base7,222 lbsBase F/R4,389 lbs / 2,833 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,680 lbs 27,700 lbs 20,000 lbs Base7,216 lbsBase F/R4,379 lbs / 2,837 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
CREW CAB 4x2 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,640 lbs 27,840 lbs 20,000 lbs Base7,361 lbsBase F/R4,521 lbs / 2,840 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,530 lbs 27,840 lbs 20,000 lbs Base7,370 lbsBase F/R4,527 lbs / 2,843 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
CREW CAB 4x2 TRADESMAN W RAMBOX 6'4" SRW
3.73 10,000 lbs 2,670 lbs 27,700 lbs 19,240 lbs Base7,332 lbsBase F/R4,360 lbs / 2,972 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,610 lbs 27,700 lbs 18,820 lbs Base7,287 lbsBase F/R4,255 lbs / 3,031 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
CREW CAB 4x4 TRADESMAN W BOX 6'4" SRW
3.73 10,000 lbs 2,500 lbs 27,980 lbs 20,000 lbs Base7,504 lbsBase F/R4,658 lbs / 2,845 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,420 lbs 27,980 lbs 19,420 lbs Base7,483 lbsBase F/R4,644 lbs / 2,839 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
CREW CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,310 lbs 26,400 lbs 18,230 lbs Base7,691 lbsBase F/R4,817 lbs / 2,874 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,200 lbs 26,400 lbs 17,290 lbs Base7,696 lbsBase F/R4,820 lbs / 2,877 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
CREW CAB 4x4 TRADESMAN W RAMBOX 6'4" SRW
3.73 10,000 lbs 2,370 lbs 27,980 lbs 18,920 lbs Base7,633 lbsBase F/R4,671 lbs / 2,963 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,300 lbs 27,980 lbs 18,290 lbs Base7,596 lbsBase F/R4,644 lbs / 2,952 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
MEGA CAB 4x4 BIG HORN W BOX 6'4" SRW
3.73 10,000 lbs 2,040 lbs 24,240 lbs 15,690 lbs Base7,956 lbsBase F/R4,900 lbs / 3,056 lbsGAWR F/R6,000 lbs / 6,040 lbs 6-Speed Auto 68RFE · BIG HORN p.1
3.73 9,900 lbs 1,940 lbs 24,240 lbs 14,690 lbs Base7,956 lbsBase F/R4,900 lbs / 3,056 lbsGAWR F/R6,000 lbs / 6,040 lbs 6-Speed Auto 68RFE · BIG HORN p.2
MEGA CAB 4x4 BIG HORN W RAMBOX 6'4" SRW
3.73 10,000 lbs 1,930 lbs 24,240 lbs 14,560 lbs Base8,069 lbsBase F/R4,890 lbs / 3,180 lbsGAWR F/R6,000 lbs / 6,040 lbs 6-Speed Auto 68RFE · BIG HORN p.1
3.73 9,900 lbs 1,830 lbs 24,240 lbs 13,560 lbs Base8,069 lbsBase F/R4,890 lbs / 3,180 lbsGAWR F/R6,000 lbs / 6,040 lbs 6-Speed Auto 68RFE · BIG HORN p.2
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 Base6,843 lbsBase F/R4,213 lbs / 2,630 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 3,060 lbs 27,320 lbs 20,000 lbs Base6,843 lbsBase F/R4,213 lbs / 2,630 lbsGAWR F/R5,500 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
REGULAR CAB 4x4 TRADESMAN W BOX 8'0" SRW
3.73 10,000 lbs 2,810 lbs 27,650 lbs 19,990 lbs Base7,187 lbsBase F/R4,514 lbs / 2,674 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.1
3.73 9,900 lbs 2,720 lbs 27,650 lbs 19,990 lbs Base7,183 lbsBase F/R4,517 lbs / 2,667 lbsGAWR F/R5,750 lbs / 6,000 lbs 6-Speed Auto 68RFE · TRADESMAN p.2
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
GUIDE FINE PRINT

Ground rules behind every 2021 Ram 2500 towing number.

These ground rules define the payload, trailering hardware, and limits behind every 2021 Ram 2500 towing number on this page.

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 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: These ground rules apply to every published towing and payload value. Your specific truck configuration may have additional constraints.
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 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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