Knock Sensor Knock sensor detecting combustion knock so ignition or injection timing can be corrected OSSCA "60132" - Not availableBMW - 3 (E36, E46, WB), 1 (E81, E87), 5 (E39, WB), Z3, Z4, X3, 7 (E38, E65, E66), X1, X5, 8