2025 International LT Towing Capacity & Payload

Quick Answer

• Max Towing Capacity: International LT models are cab-and-chassis trucks designed for various body upfits, so "towing capacity" as understood for pickup trucks isn't directly applicable. Instead, focus on GCWR and upfit capabilities.
• Max Payload: This will vary significantly based on the specific chassis configuration, wheelbase, engine, and especially the upfit (e.g., box truck, flatbed, tanker). Consult the specific vehicle's door jamb sticker and International's body builder guidelines for precise figures.
• Gross Vehicle Weight Rating (GVWR): Typically ranges from around 26,000 lbs to 52,000 lbs, depending on the model (e.g., LT625, LT62R) and axle configuration.
• Gross Combined Weight Rating (GCWR): Varies widely based on engine, transmission, and axle ratios, but can be well over 80,000 lbs for highway tractors.
• Curb Weight: Highly variable due to customizable chassis and lack of a standard "empty" configuration. It depends heavily on the chosen specifications (engine, transmission, axles, cab type) and will be significantly impacted by any upfit.
• Hitch Class: Not applicable in the traditional sense. These trucks are designed for fifth-wheel kingpin or pintle hitch towing for heavy-duty trailers, or as the power unit for a semi-trailer.

Tow Ratings by Engine & Trim

For the 2025 International LT, direct "towing capacity" figures like those for light-duty trucks are not provided because the vehicle is a heavy-duty chassis intended for a wide range of vocational applications. The crucial metrics are GVWR (Gross Vehicle Weight Rating) and GCWR (Gross Combined Weight Rating), which define the total allowable weight of the truck itself (including body and cargo) and the total allowable weight of the truck and any connected trailer, respectively.

Note: "Trim/Package" for the International LT typically refers to cab configurations and specifications rather than traditional pickup truck trims. The exact GVWR and GCWR will depend heavily on the specific axle ratings, suspension, and transmission selected for the truck's intended application. Always consult the vehicle's actual door jamb sticker for the definitive GVWR and GAWR (Gross Axle Weight Ratings), and the manufacturer's documentation for GCWR.

Tow Package Contents

For the 2025 International LT, the concept of a "tow package" as found in light-duty trucks is not directly applicable. These are heavy-duty commercial chassis. Instead, features crucial for heavy towing and hauling are typically integrated as standard or configurable options based on the specific application.

Key components and considerations for heavy-duty hauling include:

• Heavy-Duty Drivetrain: Robust engines like the Cummins X15 or Navistar S13 Integrated, paired with heavy-duty automated manual transmissions (e.g., Eaton Endurant, Allison automatic options for specific vocational needs, or the Navistar T14 automated manual) are fundamental for managing high GCWRs.
• Axle Configurations: Multiple axle options (e.g., single drive axle, tandem drive axles) with various ratios and weight ratings are available to meet specific GVWR and GCWR requirements. Axle ratios are critical for balancing fuel economy and pulling power.
• Air Brake Systems: Standard on heavy-duty trucks, providing superior stopping power for both the truck and its heavy trailers.
• Fifth-Wheel or Pintle Hitch Preparation: The chassis is designed to accept various fifth-wheel couplings or pintle hitches, depending on the trailer type (semi-trailer vs. full drawbar trailer) and application.
• Trailer Light and Electrical Connections: Standardized electrical connectors (e.g., 7-pin J560) are integrated to provide power, lighting, and communication for trailer brakes and other systems.
• Engine Braking/Retarder Systems: Engine brakes (compression release brakes) are standard on these heavy-duty engines to assist in slowing down, reducing wear on service brakes, and managing heavy loads on descents.
• Chassis Reinforcement: Heavy-duty frame rails and crossmembers are inherent to the LT series design to support demanding loads and towing forces.

5th-Wheel & Gooseneck Towing

The International LT series is primarily designed as a highway tractor or a vocational chassis, making it inherently suited for fifth-wheel towing of semi-trailers. These trucks do not utilize gooseneck hitches in the traditional sense; instead, they employ a fifth-wheel coupling that connects to a kingpin on the trailer. This design is fundamental to heavy-duty over-the-road trucking and allows for massive towing capabilities.

Key considerations for 5th-wheel towing with an International LT:

• Gross Combination Weight Rating (GCWR): This is the ultimate limit for combined truck and trailer weight. For appropriate configurations, GCWRs can exceed 80,000 lbs, with some specialized applications going much higher. This allows for the towing of fully loaded 53-foot semi-trailers, bulk haulers, flatbeds, and other heavy commercial trailers.
• Fifth-Wheel Plate Capacity: The fifth-wheel coupling itself has a rating, ensuring it can handle the vertical load (kingpin weight) and lateral forces from the trailer.
• Rear Axle Capacity: The weight transferred to the truck