Cometic C5318-066 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

The Cometic C5318-066 is a multi-layer steel (MLS) cylinder head gasket engineered specifically for GM LS-series small block V8 engines, including LS1, LS2, LS3, and LS6 variants (Generation III and IV). This precision gasket features a 4.160-inch bore diameter and .066-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring reliable sealing.

Key Specifications:

• Multi-layer steel (MLS) construction for superior sealing and durability
• 4.160-inch bore diameter accommodates standard and slightly overbored LS engines
• .066-inch (1.68mm) compressed thickness
• Designed for GM LS1, LS2, LS3, and LS6 Gen III/IV small block V8 engines
• Engineered to handle high cylinder pressures in performance applications
• Embossed stainless steel layers with elastomer coating provide optimal compression and recovery

Cometic MLS gaskets are the industry standard for high-performance engine builds, offering exceptional sealing capabilities under extreme temperatures and pressures. The multi-layer design allows for controlled compression and expansion, preventing head gasket failure in boosted, naturally aspirated, and high-compression applications. Perfect for street performance, racing, and forced induction LS builds.