2025 Ram 2500 6.7L I6 Cummins HO Turbo Diesel Eng 4x4 towing capacity.

The 2025 6.7L I6 Cummins HO Turbo Diesel Eng tows 14,630 - 19,900 lbs depending on cab, drivetrain, axle ratio, bed length, GVWR, GCWR, and the configurations covered on this page.

Find your towing capacity Look up your exact configuration with 6.7L I6 Cummins HO Turbo Diesel Eng prefilled → View full comparison chart Full model index →

Built from the official Ram 2025 towing guide pages used for this engine page. Citations for 6.7L I6 Cummins HO Turbo Diesel Eng available below.

2025 Ram 2500
6.7L I6 Cummins HO Turbo Diesel Eng RANGE
14,630 - 19,900 LBS
PEAK PAYLOAD
2,740 LBS
MAX GCWR
28,110 LBS
Towing data

2025 6.7L I6 Cummins HO Turbo Diesel Eng towing capacity by configuration

Each row below is one published configuration from the 2025 Ram towing guide, showing towing capacity, payload, GVWR, and GCWR.

RAM 2500 - 4x4 - CREW CAB - ST - 6'4'' BOX
3.42 10,190 lbs 2,450 lbs 28,110 lbs 19,890 lbs Base 7,742 lbs Base F/R 4,807 lbs / 2,935 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.3
3.42 10,000 lbs 2,260 lbs 27,983 lbs 19,770 lbs Base 7,742 lbs Base F/R 4,807 lbs / 2,935 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.3
3.42 9,900 lbs 2,170 lbs 27,020 lbs 18,820 lbs Base 7,728 lbs Base F/R 4,800 lbs / 2,927 lbs GAWR F/R 6,000 lbs / 6,040 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.3
RAM 2500 - 4x4 - CREW CAB - ST - 8' BOX
3.42 10,190 lbs 2,310 lbs 26,580 lbs 18,230 lbs Base 7,877 lbs Base F/R 4,959 lbs / 2,918 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.5
3.42 10,000 lbs 2,120 lbs 26,580 lbs 18,230 lbs Base 7,877 lbs Base F/R 4,959 lbs / 2,918 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.5
3.42 9,900 lbs 2,010 lbs 25,445 lbs 17,080 lbs Base 7,888 lbs Base F/R 4,969 lbs / 2,919 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.5
RAM 2500 - 4x4 - MEGA CAB - LARAMIE - 6'4" BOX
3.42 10,190 lbs 2,050 lbs 24,290 lbs 15,680 lbs Base 8,137 lbs Base F/R 5,041 lbs / 3,096 lbs GAWR F/R 6,000 lbs / 6,040 lbs 8-Spd ZF POWERLINE Automatic Trans · LARAMIE p.6
3.42 10,000 lbs 1,860 lbs 23,991 lbs 15,380 lbs Base 8,137 lbs Base F/R 5,041 lbs / 3,096 lbs GAWR F/R 6,000 lbs / 6,040 lbs 8-Spd ZF POWERLINE Automatic Trans · LARAMIE p.6
3.42 9,900 lbs 1,790 lbs 23,206 lbs 14,630 lbs Base 8,105 lbs Base F/R 5,009 lbs / 3,096 lbs GAWR F/R 6,000 lbs / 6,040 lbs 8-Spd ZF POWERLINE Automatic Trans · LARAMIE p.6
RAM 2500 - 4x4 - REG CAB - ST - 8' BOX
3.42 9,900 lbs 2,450 lbs 27,820 lbs 19,900 lbs Base 7,447 lbs Base F/R 4,702 lbs / 2,745 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.1
3.42 10,190 lbs 2,740 lbs 27,820 lbs 19,900 lbs Base 7,445 lbs Base F/R 4,692 lbs / 2,753 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST p.1
3.42 10,000 lbs 2,550 lbs 27,820 lbs 19,900 lbs Base 7,445 lbs Base F/R 4,692 lbs / 2,753 lbs GAWR F/R 5,750 lbs / 6,000 lbs 8-Spd ZF POWERLINE Automatic Trans · ST 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
GUIDE FINE PRINT

Ground rules behind every 2025 Ram 2500 towing number.

These ground rules define the payload, trailering hardware, and limits behind every 2025 Ram 2500 towing number on this page.

FIG. 2025 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. 2025 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. 2025 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. 2025 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. 2025 STD Rating Standard

SAE J2807 compliance

  • Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.
FIG. 2025 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. 2025 NOTES Policy Notes

All published notes from the 2025 towing guide

  • Max. Trailer Weight Rating represents a properly equipped base trim configuration. p.7
  • Vehicles with a GVWR of 13,500 and greater are DRW. Vehicles less than 13,500 GVWR are SRW. p.7
  • Payload and Max Trailer Weights are ESTIMATED values. p.7
  • All values are shown in pounds unless otherwise stated. p.7
  • Payload and Max Trailer Weight values are rounded to the nearest 10lb. p.7
  • Payload = GVWR - Base Weight p.7
  • Payload and Trailer Weight Rating are mutually exclusive. p.7
  • GAWRs, GVWRs and GCWRs should never be exceeded. p.7
  • Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807. p.7
  • Passenger Weight = 300 lb p.7
  • Options Weight = 100 lb p.7
  • Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel. p.7
  • 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.7
  • 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.8
  • Box Off Body Completion Weight = 80 lb per foot from end of cab to end of frame p.8
  • A fifth-wheel hitch is required for trailers over 23,000 lbs. p.8
  • A Gooseneck hitch is required for trailers over 30,000 lbs. p.8
NOTES: These ground rules apply to every published towing and payload value. Your specific truck configuration may have additional constraints.
Compare

Other 2025 4x4 engines

These comparisons stay within the same published year slice so separate gas/diesel or drivetrain groupings are not blended together.

Highest Capacity
6.4L V8 HEMI Upgrade HD Engine
Range: 10,530 - 17,440 lbs
Max rating 17,440 LBS
Technical Audit

Data sources

These citations show the Ram guide pages used to build the 2025 6.7L I6 Cummins HO Turbo Diesel Eng engine page.

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

2025 Ram 2500 4WD Towing Guide

Audit Scope PAGES: 1, 3, 5-6