Sensor Indmar 5.7L Knock Sensor

Indmar SENSOR KNOCK, Replacement Knock Sensor, Threads are 1/4"-18 NPT Pipe Thread, DO NOT use Teflon tape, this sensor needs to make direct contact with the engine block., Replacement Indmar Knock Sensor, this is a crucial part to your engines ignition system. The knock sensor controls the advance on your ignition timing.,