Cometic C5505-060 GM Gen III/IV MLS Head Gasket Bore - LS1/LS2/LS3/LS6 V8 4.040

The Cometic C5505-060 is a premium multi-layer steel (MLX) cylinder head gasket engineered specifically for GM LS-series Gen III and Gen IV small block V8 engines, including LS1, LS2, LS3, and LS6 applications. This high-performance gasket features a 4.040-inch bore diameter and .060-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring precise compression control.

Key Features:

• Multi-layer steel (MLX) construction for superior sealing and durability
• 4.040-inch bore diameter accommodates stock and mildly overbored LS engines
• .060-inch compressed thickness for compression ratio tuning
• Compatible with LS1, LS2, LS3, and LS6 Gen III/IV engines
• Advanced gasket technology prevents head lifting and combustion leaks
• Engineered to withstand extreme cylinder pressures in high-performance applications

Cometic's MLX gaskets utilize multiple layers of stainless steel with proprietary coatings to provide exceptional conformability and recovery characteristics. This design ensures reliable sealing across the entire combustion chamber surface, even under the demanding conditions of boosted or high-compression LS engines. The .060-inch thickness allows engine builders to fine-tune compression ratios for optimal performance.