G&T Engine Parts is not an authorized OEM dealer of Caterpillar, Cummins, Detroit Diesel, John Deere, Komatsu, Navistar, Perkins, Yanmar or any other OEM brand. We sell parts “Made to Fit” these brands which are often referred to as “Aftermarket.” Rebuilt or remanufactured OEM products re-use the OEM core. These remanufactured items are rebuilt by us or another high quality remanufacturer. Use of any OEM manufacturer name is not intended to represent any relationship between the two companies, instead it indicates that we sell replacement parts that are compatible with OEM components.