- Knock Sensor
- Knock sensor detecting combustion knock so ignition or injection timing can be corrected
- ERA "550657A" - Not available
PEUGEOT - 308, 406, 208, 307, 207; CITROËN - C3, C4; MINI - Cooper, Clubman; OPEL - Crossland, Corsa F; DS - DS 3, DS 4