2019 International LT: Towing Capacity & Payload
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The International LT is a Class 8 semi-trailer truck and is not rated for conventional towing like light-duty pickup trucks. Its capacity is measured by its Gross Combined Weight Rating (GCWR), which is typically 80,000 lbs with the proper engine and axle configurations. Commercial truck capacities are highly dependent on the specific configuration of the tractor (engine, axles, transmission) and the trailer, and must adhere to federal and state regulations.
Because this is a commercial semi-truck, concepts like a "tow package," "hitch class," and "payload" as they relate to light-duty trucks do not apply. The "payload" is the freight carried in the trailer, and the connection is a fifth-wheel coupling, not a conventional receiver hitch. All towing-related components (engine/transmission cooling, braking) are designed for maximum-rated loads from the factory.
Quick Answer
- Max Tow Capacity: Not applicable in conventional terms. Governed by GCWR.
- Max Payload: Dependent on trailer and cargo, up to the GCWR limit.
- Gross Vehicle Weight Rating (GVWR): Varies by configuration, typically 32,000 to 53,200 lbs for the tractor.
- Gross Combined Weight Rating (GCWR): Up to 80,000 lbs.
- Curb Weight: Approximately 18,000 - 21,000 lbs for the tractor.
- Hitch Class: Not applicable. Uses a commercial fifth-wheel plate.
Tow Ratings by Engine
| Engine | Drivetrain | Max Tow | Payload |
|---|---|---|---|
| International A26 | 6x4 | Up to 80,000 lbs GCWR | Varies |
| Cummins X15 | 6x4 | Up to 80,000 lbs GCWR | Varies |
Fifth-Wheel & Gooseneck
The International LT is equipped with a commercial-grade fifth-wheel plate on the chassis for coupling with a semi-trailer. This is the sole method of "towing." There are no provisions or ratings for gooseneck or conventional receiver-hitch towing.
Weight Distribution
Weight distribution is critical and managed by axle weight limits. The steer axle, drive axles, and trailer axles must all be within legal limits, which typically are:
- Steer Axle: 12,000 lbs
- Drive Axles (Tandem): 34,000 lbs
- Trailer Axles (Tandem): 34,000 lbs
Proper loading of the trailer and positioning of the fifth wheel are required to stay within these limits.
Common Towing-Related Issues
Issues on a Class 8 truck are complex and require professional diagnosis. Common areas of concern under heavy load include the engine, transmission, air brake system, and tires. Regular preventative maintenance is crucial to safe operation.
If you are experiencing issues with your commercial truck, you need a qualified diesel mechanic. Find a trusted shop on Repairius.
More specs for the 2019 International LT
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2019 International LT Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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