ABOUT DEFEO - Parts for AllisonWe have been the premier global manufacturer & supplier of parts for Allison Transmissions for 30 years serving all 7 continents. Our vast inventory consists of over 10,000 parts covering both on- & off-highway applications including fully dynamometer-tested Allison Transmissions with the best warranties in the industry. PRODUCTS & SERVICESDEFEO provides the best quality parts, service, and pricing in the industry. Our constantly expanding inventory consists of parts such as: Overhaul Kits, Seals, Gaskets, Bearings, Clutches, Solenoids, Sensors, Filters, ECU's, Hard Parts, Accumulators, Shift Selectors, Torque Converters, Coolers, and much more. We offer cost saving options with Aftermarket New Parts, Good Used Parts, Refurbished Parts, Allison Surplus Parts, and Allison New Parts. DEFEO also buys & sells Allison Transmission cores.Our remanufactured transmissions are overhauled and fully dynamometer-tested. We offer valve body testing, and solenoid testing, as well as any high performance customization you may require. DEFEO's team of dedicated and experienced professionals is focused on your success by providing unparalleled service and dedicated support focused on getting your Allison Transmission back on the road at a price you can afford.NEW PRODUCTSDEFEO is ahead of the demand curve when it comes to creating new products for Allison Transmissions. We are not a typical parts supplier repackaging someone else's products. By having our own manufacturing facility, coupled with our own testing equipment DEFEO acts quickly when designing and creating our parts. Our state of the art testing equipment ensures that the parts we engineer are similar in form, fit, and function to their OEM counterparts. This vertical integration process and lack of a "middle man" ensures both quality and cost-saving solutions for our customers.