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These Chevrolet Performance knock sensor grommets are OEM replacement grommets for your GM knock sensors. They hold the bottom of the knock sensor onto the intake valley cover on all Gen III engines, except for the LS7. If you need new knock sensor grommets, make sure that you get Chevrolet Performance OEM replacements to ensure long-lasting performance and durability.

Sold Individually.

LS Engines have (2) knock sensors.