Komatsu excavator engine piston 1) OEM: 6140-31-2113 2) for Komatsu ... we have engine pistons for sale, like the following: Komatsu excavator engine, Mitsubishi engine, Suzuki engine, CAT excavator engine, Yammner engine, Perkins engine, Hino engine, Nissan engine, Daewoo engine ...........2) engine types ... good packing, fast delivery and good after-service Komatsu excavator engine piston 6140-31-2113