Cometic C5078-054 GM LSX Small Block MLS Head Gasket Bore - Gen-4 V8 4.200 054

The Cometic C5078-054 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LSX Gen-4 small block V8 engines. This left-hand side gasket features a 4.200-inch bore diameter and a compressed thickness of .054 inches, making it ideal for performance and racing applications where precise sealing and durability are critical.

Key Features:

• Multi-Layer Steel (MLS) construction with multiple layers of stainless steel for superior strength and heat resistance
• 4.200-inch bore diameter accommodates stock and slightly overbored cylinders
• .054-inch compressed thickness allows for custom compression ratio tuning
• Designed specifically for GM LSX Gen-4 small block V8 engines (LS2, LS3, LS7, LS9, LSA)
• Left-hand side (LHS) gasket - order two for complete engine rebuild
• Viton rubber gasket sealing beads around coolant and oil passages
• Exceeds OEM specifications for performance and endurance applications

Cometic MLS gaskets are the preferred choice for high-performance engine builders, featuring a durable design that maintains sealing integrity under extreme cylinder pressures and temperatures. The gasket's multiple layers allow for engine movement while maintaining a positive seal, reducing the risk of head gasket failure in modified and high-boost applications.