Piston Piston compressing the air-fuel charge and transferring combustion force to the connecting rod IPSA "PI011800" - Not availableBMW - 3 (E91, E92, F30), 1 (E81, E87), 5 (E39, F10, WB), 4 (F32, F33, F82), X1, X3, 2, X5; ALPINA - D3