This spare part is made in China, no longer an OEM part 6FE-40 6FE-50 4FE-25 4FE-25 Piston of complete for refrigeration compressor6FE-50(Y) 6FE-44(Y) 6FE-40(Y)4FE-35(Y) 4FE-28(Y) 4FE-25(Y)