Cometic C5703-056 GM LSX Small Block Cylinder Head Gasket Bore MLS - Gen-4 V8 4.165 056

The Cometic C5703-056 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 4.165-inch bore diameter and .056-inch compressed thickness, providing exceptional sealing performance for high-performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.165-inch bore diameter accommodates stock and mild over-bore applications
• .056-inch compressed thickness allows precise compression ratio tuning
• Left-hand side (LHS) application for GM LSX Gen-4 engines
• Advanced MLX coating technology resists combustion gas leaks and coolant seepage
• Embossed stainless steel layers with multiple sealing beads
• Designed to withstand extreme cylinder pressures in boosted and naturally aspirated engines

Cometic MLS head gaskets are the preferred choice for engine builders seeking maximum reliability in demanding performance environments. The layered steel construction allows the gasket to micro-adjust to head and block surface imperfections while maintaining a robust seal under extreme thermal cycling and combustion pressures.