126 272 123 1 · piston Porsche genuine (OEM) part number 126 272 123 1, piston. Fitted on (3)PISTON — pos 4 (KAT1006.BIN)PISTON — pos 4 (KAT1011.BIN)PISTON — pos 4 (KAT1016.BIN) Open the interactive exploded diagram →