Authentic Bosch "Donut" style knock sensor. Features 8mm mounting hole.
Includes plugs and pins.
OPTIONAL: Add an adapter stud, M12x1.25 x M8x1.25 (select in options)
Authentic sensor! Don't get tricked by cheap or knock-off sensors on Amazon, eBay and other parts store sites! These are authentic Bosch sensors and all you should trust with your knock detection system!