2025 Ram 2500 6.7L I6 Cummins HO Turbo Diesel Eng 4x2 towing capacity.

The 2025 6.7L I6 Cummins HO Turbo Diesel Eng tows 19,960 - 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 2025 towing guide pages used for this engine page. Citations for 6.7L I6 Cummins HO Turbo Diesel Eng available below.

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 - 4X2 - CREW CAB - ST - 6'4'' BOX
3.42	9,900 lbs	2,460 lbs	27,870 lbs	19,960 lbs	Base 7,435 lbs Base F/R 4,540 lbs / 2,894 lbs GAWR F/R 5,500 lbs / 6,000 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.2
3.42	10,000 lbs	2,560 lbs	27,870 lbs	19,960 lbs	Base 7,435 lbs Base F/R 4,543 lbs / 2,892 lbs GAWR F/R 5,500 lbs / 6,040 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.2
3.42	10,190 lbs	2,750 lbs	27,870 lbs	19,960 lbs	Base 7,435 lbs Base F/R 4,543 lbs / 2,892 lbs GAWR F/R 5,500 lbs / 6,040 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.2
RAM 2500 - 4X2 - CREW CAB - ST - 8' BOX
3.42	10,000 lbs	2,460 lbs	28,010 lbs	20,000 lbs	Base 7,539 lbs Base F/R 4,668 lbs / 2,870 lbs GAWR F/R 5,500 lbs / 6,040 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.4
3.42	10,190 lbs	2,650 lbs	28,010 lbs	20,000 lbs	Base 7,539 lbs Base F/R 4,668 lbs / 2,870 lbs GAWR F/R 5,500 lbs / 6,040 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.4
3.42	9,900 lbs	2,350 lbs	28,010 lbs	19,980 lbs	Base 7,553 lbs Base F/R 4,681 lbs / 2,872 lbs GAWR F/R 5,500 lbs / 6,040 lbs	8-Spd ZF POWERLINE Automatic Trans · ST	p.4

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. 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.6
Vehicles with a GVWR of 13,500 and greater are DRW. Vehicles less than 13,500 GVWR are SRW. p.6
Payload and Max Trailer Weights are ESTIMATED values. p.6
All values are shown in pounds unless otherwise stated. p.6
Payload and Max Trailer Weight values are rounded to the nearest 10lb. p.6
Payload = GVWR - Base Weight p.6
Payload and Trailer Weight Rating are mutually exclusive. p.6
GAWRs, GVWRs and GCWRs should never be exceeded. p.6
Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807. p.6
Passenger Weight = 300 lb p.6
Options Weight = 100 lb p.6
Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel. p.6
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.6
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.6
Box Off Body Completion Weight = 80 lb per foot from end of cab to end of frame p.7
A fifth-wheel hitch is required for trailers over 23,000 lbs. p.7
A Gooseneck hitch is required for trailers over 30,000 lbs. p.7

Compare

Other 2025 4x2 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: 14,920 - 17,750 lbs

Max rating 17,750 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 2WD Towing Guide

Audit Scope PAGES: 2, 4