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From the early days of mechanical engineering to today’s heavy-duty commercial trucks, the U-joint has been the link holding everything together. Its genius lies in its simplicity: a mechanical connection that allows power to flow smoothly between rotating shafts at different angles, maintaining motion even when alignment is imperfect or constantly changing.

From Dana, Spicer, Eaton, Fuller, Meritor, Muncie and more — every part we sell is backed by our decades of expertise and the lowest prices you’ll find anywhere online. Browse our inventory today and see why professionals choose General Truck Parts. If you are a current distributor, sign in for even lower prices or contact…

Special unit pricing for Partners As an exclusive partner you are one of our selected customers eligible to buy select units online. This is not open to the general public. Click unit links below for combined unit + core pricing. Browse all available transmissions | Browse all available differentials Manual Transmissions Dana Spicer DSP40 Differentials…

From Dana, Spicer, Eaton, Fuller, Meritor, Muncie and more — every part we sell is backed by our decades of expertise and the lowest prices you’ll find anywhere online. Browse our inventory today and see why professionals choose General Truck Parts. If you are a current distributor, sign in for even lower prices or contact…

The clutch and transmission are two of the most critical components in a heavy-duty truck’s driveline. Together, they manage the delivery of power from the engine to the driveshaft, converting combustion energy into usable torque that moves tens of thousands of pounds down the highway. Understanding how these systems interact—and how their design changes between…

The Muncie CS6 Series is a line of clutch-shift power take-offs (PTOs) designed to transfer engine or transmission power to auxiliary equipment (pumps, compressors, generators, etc.). These are built for tough duty-cycle commercial vehicles, such as utility trucks, dump bodies, refuse trucks, aerial buckets, and snow/ice equipment. Muncie CS6 Features & Benefits Muncie CS6 Specifications…

Introducing the General Truck Parts Master Distributor Program At General Truck Parts, we believe our best customers deserve more than great parts — they deserve a true partnership. Our Master Distributor Program rewards your loyalty with exclusive, locked-in benefits that keep your business running smoothly and profitably: This program is built for our long-term partners…

At General Truck Parts, we maintain a comprehensive inventory of new and replacement gears for heavy-duty trucks and off-highway vehicles. Our selection spans transmission gears, differential gear sets (including ring & pinion assemblies), planetary gear assemblies, side gears and more – covering both popular models and hard-to-find applications. We source these components from industry-leading manufacturers…