Ensure optimal engine performance and reliability with this high-quality Knock Sensor Grommet, designed as a direct replacement for various GM LS-based engines. Made from durable rubber material, this grommet offers excellent wear resistance and long-lasting use, providing a secure fit and reliable protection for your knock sensor. Engineered to meet original factory standards, it guarantees perfect compatibility and easy installation, making it an ideal choice for professional repairs and maintenance. Key Features: · Premium Rubber Construction: Crafted from durable rubber, this knock sensor grommet resists wear and tear, ensuring long service life and reliable protection. · Direct Replacement: Designed to replace worn or damaged grommets, mounting securely to the bottom of the valley cover for a precise fit. · OEM Reference Number 12558177: Manufactured to meet original equipment specifications, ensuring compatibility and avoiding adaptation issues. · High Precision and Reliability: Professionally engineered for strong durability and safety, maintaining sensor stability and engine performance. · Wide Vehicle Compatibility: Suitable for a range of GM vehicles equipped with Gen 3 LS-based engines, including Chevrolet Suburban 1500/2500/3500, Silverado, Tahoe, Trailblazer TBSS (1999-2006/2007 4.8L, 5.3L, 6.0L Vortec), Camaro, GTO, Trans Am, Firebird, Corvette LS1/LS2/LS6 (5.7L, 6.0L), and GMC Sierra and Yukon models. · Easy Installation: Designed for straightforward replacement, enabling quick and hassle-free maintenance. Specifications: · Item Type: Knock Sensor Grommet · Material: Rubber · OE Reference Number: 12558177 Fitment: Replacement for Chevrolet Suburban 1500/2500/3500, Silverado, Tahoe, Express, Trailblazer TBSS (1999-2006/2007 4.8L, 5.3L, 6.0L Vortec), Camaro, GTO, Trans Am, Firebird, Corvette LS1/LS2/LS6 (5.7L, 6.0L), GMC Sierra, and Yukon, compatible with GM LS1, LQ4, LQ9 5.3L, 6.0L, and 5.7L engines. Package Includes: · 1 Pair of Knock Sensor Grommets This Knock Sensor Grommet is an essential component for maintaining engine efficiency and preventing sensor damage. Its high-quality construction and precise fit ensure reliable operation, making it a trusted replacement part for your GM LS-based engine vehicles.