Cometic C5476-027 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.970

The Cometic C5476-027 is a premium multi-layer steel (MLS) cylinder head gasket engineered specifically for GM LS Gen III and Gen IV small block V8 engines, including LS1, LS2, LS3, and LS6 variants. This gasket features a 3.970-inch bore diameter and a compressed thickness of .027 inches, making it ideal for high-performance builds and engines with moderate compression increases.

Key Features:

• Multi-layer steel construction provides superior sealing and durability under extreme cylinder pressures
• 3.970" bore diameter accommodates stock and slightly overbored LS engines
• .027" compressed thickness for precise compression ratio tuning
• Compatible with LS1, LS2, LS3, and LS6 Gen III/IV small block V8 engines
• Engineered to withstand high heat and combustion pressure in performance applications
• Embossed stainless steel layers with Viton rubber coatings ensure optimal sealing

Cometic's MLS gaskets are the industry standard for performance engine builds, offering exceptional durability and sealing capability that far exceeds traditional composite gaskets. The multi-layer design allows the gasket to move with the block and cylinder head during thermal expansion, maintaining a consistent seal throughout the engine's operating range. Ideal for street performance, racing, forced induction, and engine rebuilds requiring precise compression control.