Cometic C15503-054 GM LSX Small Block Cylinder Head Gasket MLX Bore - Gen-4 V8 054 4.165

The Cometic C15503-054 is a premium Multi-Layer Stainless (MLX) cylinder head gasket engineered specifically for GM LSX Gen-4 small block V8 engines. This high-performance gasket features a .054" compressed thickness and 4.165" bore diameter, making it ideal for street performance and racing applications.

Key Features:

• Multi-Layer Stainless (MLX) steel construction for superior sealing and durability
• .054" compressed thickness provides optimal compression ratio adjustment
• 4.165" bore diameter accommodates stroker and overbore applications
• Compatible with 1/2" and 3/8" head studs for maximum clamping force
• Designed for RHS (Racing Head Service) cylinder heads
• Withstands extreme cylinder pressures in boosted and high-compression applications
• Eliminates gasket failure and fluid migration between cylinders

Cometic MLX gaskets feature multiple layers of stainless steel with a polymer coating that provides exceptional conformability to sealing surfaces while maintaining the strength needed for high-performance applications. The stacked stainless steel layers allow the gasket to recover from minor surface imperfections and thermal expansion cycles, ensuring a long-lasting, leak-free seal.