Cometic C5477-040 GM LS1/LS2/LS3/LS6 MLS Cylinder Head Gasket 4.000" Bore .040" Thick

The Cometic C5477-040 is a precision-engineered multi-layer steel (MLS) cylinder head gasket designed specifically for GM LS Gen-3 and Gen-4 small block V8 engines, including LS1, LS2, LS3, and LS6 applications. This gasket features a 4.000-inch bore diameter and .040-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring reliable sealing under high compression and extreme temperatures.

Key Features:

• Multi-layer steel construction provides superior strength and durability
• 4.000-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-3 and Gen-4 small block V8 engines
• Engineered to withstand high cylinder pressures and thermal cycling
• Embossed stainless steel layers with polymer coating ensure optimal sealing

Cometic's MLS head gaskets are a proven choice for both street performance and racing applications, offering exceptional reliability and the ability to maintain a seal even under demanding operating conditions. Each gasket is manufactured to exacting tolerances to ensure proper fitment and long-lasting performance.