To Suit LS2 and LS3 GM with OEM Part Number: 0EM 22 060-30P00

A knock sensor is essentially a vibration sensor mounted to the engine block. It detects the characteristic vibration produced when combustion detonates/knocks rather than burning smoothly.

The ECU can use this information to:

• Detect engine knock
• Retard ignition timing
• Protect the engine
• Potentially add timing back once knock disappears
• Log knock activity for tuning