... 9001-2000 3. Quality casting and machining parts. 4. OEM & ODM welcomed. Valve Seat Ring1. Engine parts valve seat ... , VT6-280 etc .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, Komatsu, Caterpillar, Perkins ... 58323431.1287333126.4247343834.51296353128.3224.58Advantage:1. Powder Metallurgy quality casting.2. Precision machining provided.3. Over 15years ...