... OEM & ODM welcomed. Valve Seat Ring1. Engine parts valve seat ring is used for different egines, Automobiles, Marines, Air compressors ... , Engineering machines engine...etc.Engine Type: 6BT, 6CT, ... V6E-195, VT6-280 etc .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, Komatsu, ...