This spare section is made in China, not an OEM part 6GE-40 6GE-34 4GE-30 4GE-23 Piston of whole for refrigeration compressor6GE-40(Y)6GE-34(Y) 6GE-30(Y)4GE-30(Y) 4GE-23(Y) 4GE-20(Y)