Pure Diesel Power is here to provide you with the reliable parts you need for your medium and heavy duty commercial vehicles. We have a large selection of products to choose from, including fully automatic transmissions from Allison Transmission. They are the world’s largest manufacturer of transmission systems for heavy duty vehicles, and they even lead when it comes to hybrid-propulsion systems. We have parts available for buses, large trucks, and just about any other type of commercial vehicles.Whether you need a new transmission output seal, fluid drain plug, internal transmission wiring, or any related parts, we can help. Order your Allison Transmission parts from us today and we will ship them in no time. If you would like to learn more about any of the transmission parts found on this page, or about our services in general, contact us today to speak with a member of our team!