Cometic C5475-040 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.910 040

The Cometic C5475-040 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 Gen III and Gen IV applications. This precision-manufactured gasket features a 3.910-inch bore diameter and .040-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring precise compression control.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under high cylinder pressures
• 3.910-inch bore diameter accommodates standard and slightly overbored LS engines
• .040-inch compressed thickness allows for precise compression ratio tuning
• Compatible with LS1, LS2, LS3, and LS6 Gen III and Gen IV small block V8 engines
• Engineered to withstand extreme temperatures and combustion pressures in performance applications
• Embossed stainless steel layers with elastomer coating ensure optimal sealing

Cometic MLS head gaskets are a popular choice among engine builders and performance enthusiasts due to their ability to maintain a reliable seal in high-horsepower applications, forced induction setups, and racing environments. The multi-layer design allows the gasket to micro-adapt to head and block surface imperfections while maintaining consistent clamping force across the entire sealing surface.