Nissan OEM RB25 RB20 Knock Sensor (Used)
Nissan OEM Knock Sensor - RB20 RB25 (Used)
The knock sensor responds to spark knock caused by Pre-detonation of the Air/Fuel mixture. As the flame front moves out from the spark plug ignition point, pressure waves in the chamber crash into the piston or cylinder walls resulting in a sound known as a knock or ping. This is caused by using a fuel with a low octane rating, overheating, or over advanced timing.
Both the RB20 and the RB25 engine requires 2 knock sensors. This item is priced per knock sensor.