General Truck Parts® (GTP) is known in the industry as one of the nation’s largest suppliers of remanufactured and new transmissions, transfer cases and parts. Our extensive inventory includes current as well as older/hard-to-find on- and off-highway models for light, medium, and heavy-duty use. New transmissions and transfer cases are available for upgrade and new applications. All of our transmissions are tested on our state-of-the-art dynamometer to ensure a problem-free installation. With over 45 years of experience, we have the products and expertise to get you back up and running in no time.