Product Description
Michigan Motorsports Knock Sensor Grommets (Qty 2) - Like 12558177
Fits Gen 3 LS-Based Car & Truck Engines | Direct Replacement Knock Sensor Seals
Protect your LS engine knock sensors from moisture and contamination with the Michigan Motorsports Knock Sensor Grommets. Designed as a direct replacement similar to GM part number 12558177, these grommets help properly seal the knock sensor openings in the intake valley of Gen 3 LS-based engines. Damaged or worn knock sensor seals can allow water intrusion that commonly leads to sensor failure, drivability issues, and check engine lights. Whether you're replacing failed sensors, rebuilding an LS engine, or performing intake manifold service, these replacement grommets help restore a proper seal and long-term reliability.
Key Features & Benefits
- Direct Replacement Design: Manufactured to replace factory knock sensor grommets similar to GM part number 12558177.
- Helps Prevent Water Intrusion: Properly seals the knock sensor openings to reduce moisture contamination and sensor failure.
- Ideal During LS Repairs: Recommended when replacing knock sensors, intake gaskets, valley covers, or rebuilding LS engines.
- OEM-Style Fitment: Designed to provide proper fit and sealing performance on Gen 3 LS-based applications.
- Includes Two Grommets: Complete set includes two replacement knock sensor grommets for one engine.
Key Fitments
- Fits Gen 3 LS-based gasoline V8 car and truck engines.
- Includes: Quantity 2 Knock Sensor Grommets
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