Nissan 300zx detonation sensor 300ZX Detonation / Knock Sensor, Z1 Motorsports OEM Z32 detonation (knock) sensor. Fits all 1990+ Nissan 300ZX models. This sensor is a "microphone" through which the ECU listens for... Source Source Source Source Source Source Source Source Source Source Read Also: Detonation sensor relocation kit for nissan 300zx z32 Nissan 300zx knock sensor bypass Nissan 300zx 84 engine knock Nissan 300zx boost sensor Nissan 300zx knock sensor replacement Nissan knock sensor testing