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4l80 Transmission has been a trusted provider of new and remanufactured high quality engines at competitive prices for over 35 years. Our production facility is 180,000 square feet and located in Vassar Michigan, with corporate operations in Plainview New York. 4l80 Transmission produces over 5500 diesel and gas engines each year in all makes and sizes and inventories approximately 1200 units. We offer a flexible core return policy, that allows up to 30 days to return your core and we pay the return freight. Many units require no up-front fee and have an average lead time of 3 – 5 business days. We also offer transmissions, parts and accessories such as fuel injectors, fuel pumps, water pumps and turbochargers. We believe that lasting business relationships are based on mutual trust and respect, and that customer service is of the utmost importance. Our workplace core values demand that our employees conduct themselves with integrity, accountability, diligence and discipline. Given the opportunity, you will find us to be a trustworthy partner.