CURT Weld-On Receiver Hitches: Frame Width & Center Sections

CURT's weld-on receiver hitches serve custom and commercial-style towing installations where an approved frame-mounted system is required. Choose by receiver size, frame width and required vertical drop. This reference separates complete weld-on hitch assemblies from center sections supplied without side plates and the standalone raw-steel receiver collar.

Complete assemblies, center sections and collars

Weld-on hitch assembly

15901, 15923, 15924 and 15926 supply a main receiver body with detached side plates for fitting and welding to the approved frame.

Center section only

15920 and 15921 provide a 44-inch receiver center section. They do not include the necessary side plates.

Reinforcement collar

49770 is raw steel for welding around a 2-inch square receiver tube; it is not a stand-alone towing hitch.

CURT weld-on hitch receiver and drop comparison

Receiver opening and center width are different measurements. A rated center section cannot provide a certified installation until compatible side plates and welding are completed according to the manufacturer's instructions.

MPN Supplied part Receiver Frame / span Drop Manufacturer rating reference
15901 Weld-on hitch with detached side plates 2 in 18–43 in 3-1/8 in 15,000 lb GTW / 1,500 lb TW
15920 Center section only; no side plates 2 in 44 in center section Depends on separately selected side plates 16,000 lb rated center section
15921 Center section only; no side plates 2-1/2 in 44 in center section Depends on separately selected side plates 16,000 lb rated center section
15923 Weld-on hitch with detached side plates 2-1/2 in Up to 44 in 9 in Up to 20,000 lb GTW
15924 Weld-on hitch with detached side plates 2-1/2 in Up to 44 in 18 in Up to 20,000 lb GTW
15926 Weld-on hitch with detached side plates 2-1/2 in Up to 62 in 18 in 20,000 lb GTW / 2,000 lb TW
49770 Receiver reinforcement collar only 2 in Not a frame-spanning hitch Not applicable No standalone towing rating

Welding, fitment and towing safety

CURT instructs installers to remove coating to bare metal at weld locations, clamp the detached side plates into the correct position and weld to applicable AWS standards. Use a qualified fabricator and the current model-specific installation sheet for weld sizing, frame compatibility and finishing.

Do not exceed the weakest component or vehicle limit

CURT specifies that 15923 needs side plates welded no more than 42 inches apart to achieve the 20,000-lb rating. Other hitch and vehicle constraints may reduce permissible towing weight. CURT also advises against its weld-on hitches for electric-vehicle applications.

Verify the vehicle manufacturer's permitted towing capacity, trailer tongue load, approved frame modifications and any applicable roadworthiness requirements before use.

CURT weld-on hitches, centers and collar

Select the required part below to review its product details and availability.

Hitch retaining pins and locks

CURT receiver pin and lock sizes

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