Cometic C5986-052 GM Small Block MLS Head Gasket Bore - LS9/LSA Gen-4 V8 4.100

The Cometic C5986-052 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM LS9 and LSA Gen-4 small block V8 engines. This left-hand side (LHS) gasket features a 4.100-inch bore diameter and a compressed thickness of .052 inches, making it ideal for high-performance and forced induction applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.100-inch bore diameter optimized for LS9/LSA engines
• .052-inch compressed thickness for precise deck height control
• Designed for left-hand side cylinder bank installation
• Engineered to withstand high combustion pressures and temperatures
• Embossed stainless steel layers with Viton rubber gasket material
• Suitable for supercharged and turbocharged applications

Cometic's MLS gaskets utilize multiple layers of stainless steel with an embossed active sealing area, providing exceptional conformability to irregular sealing surfaces. The advanced design ensures reliable sealing under extreme conditions, making this gasket the preferred choice for racing, performance street builds, and high-boost forced induction setups. This gasket is specifically matched to the compression requirements and bore specifications of GM's LS9 (Corvette ZR1) and LSA (Cadillac CTS-V) supercharged engines.