Cometic C5318-040 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

The Cometic C5318-040 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 4.160-inch bore diameter and a compressed thickness of .040 inches, making it ideal for both stock rebuilds and performance applications.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under extreme conditions
• .040-inch compressed thickness allows for precise compression ratio tuning
• 4.160-inch bore diameter accommodates standard and slightly overbored LS cylinders
• Compatible with LS1, LS2, LS3, and LS6 Gen III/IV small block V8 engines
• Engineered to withstand high cylinder pressures in boosted and naturally aspirated applications
• Eliminates the need for sealants or retorquing after initial installation

Cometic MLS gaskets utilize multiple layers of stainless steel with advanced coating technology to create a superior seal between the cylinder head and block. The gasket's ability to micro-seal imperfections in the sealing surfaces makes it an excellent choice for performance builds, forced induction applications, and high-compression engines where reliability is critical.