What size hitch is on a 3/4 ton truck?
In most cases, a 34-ton truck uses a 2-1/2-inch receiver hitch (Class V) for standard towing, though some models—especially older fleets or specialized equipment—employ a 3-inch receiver or rely on other towing methods such as gooseneck or fifth-wheel connections.
Understanding the question means recognizing that “34-ton” refers to load class, not necessarily hitch size. Heavy trucks are built with different towing packages, and the hitch type is specified by the vehicle manufacturer and can vary by model, year, and the trailer being towed. The following guide explains common sizes and how to identify the correct one for a given truck.
Common hitch receiver sizes on heavy-duty trucks
These are the sizes you are most likely to encounter. The exact capacity depends on the hitch rating and the vehicle's towing package.
- 2-inch (50 mm) receiver: Common on many light- to heavy-duty trucks; used with standard Class III/IV hitches. Capacity varies, typically up to several thousand pounds GTW depending on the configuration.
- 2-1/2-inch (63.5 mm) receiver: Widely used for heavier-duty applications; associated with Class V hitches and higher towing ratings, often well into the tens of thousands of pounds GTW depending on the unit.
- 3-inch (76 mm) receiver: Found on some large trucks and fleets that require larger openings for high-load connections or gooseneck adapters; capacity is highly variable and should be confirmed from the hitch spec.
Note: Some 34-ton trucks may not rely on a conventional hitch receiver at all and instead use a gooseneck or fifth-wheel setup for heavy towing. Always refer to the manufacturer’s documentation for the exact hitch configuration.
How to confirm your truck’s hitch size
To determine the precise receiver size and rating for your vehicle, use these steps:
- Check the owner’s manual or towing guide for the vehicle; it lists the recommended hitch class and receiver size.
- Inspect the hitch crossmember or receiver collar for stamped size markings such as "2", "2-1/2", or "3".
- Look for a sticker or label on the hitch itself that states the maximum towing capacity and receiver size.
- Measure the interior width of the receiver opening with a ruler or calipers to confirm the opening size.
- When in doubt, contact the vehicle manufacturer or a certified trailer hitch installer for precise specifications.
With the right confirmation, you can match the hitch to the correct trailer and ensure safe towing.
Summary
For many 34-ton trucks, the standard receiver hitch size is 2-1/2 inches, but 3-inch receivers exist on certain models and fleets. Some heavy configurations rely on gooseneck or fifth-wheel connections rather than a typical receiver hitch. Always verify the exact size and weight rating from the vehicle’s documentation or by inspecting the hitch itself.
