Bosch Knock Sensor

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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 sen sor! 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! Show more