Cometic C15504-040 MLS Cylinder Head Gasket Chevy Small Block Bore - V8 4.165

The Cometic C15504-040 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation I Small Block V8 engines. This precision gasket features a 4.165-inch bore diameter and .040-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring superior sealing capabilities.

Key Features:

• Multi-Layer Steel (MLS) construction provides exceptional strength and heat resistance
• 4.165-inch bore diameter for optimal cylinder sealing
• .040-inch (1.02mm) compressed thickness for precise compression ratio tuning
• Designed for 18-degree and 23-degree cylinder heads
• Configuration without steam holes for specific block applications
• Engineered for Generation I Chevy Small Block V8 engines (262-400 cubic inch)
• Superior resistance to blowout and gasket failure under extreme conditions

Cometic MLS gaskets feature multiple layers of stainless steel with elastomeric coatings that provide superior rebound characteristics and seal integrity. The advanced design accommodates minor surface imperfections while maintaining excellent torque retention, making them the preferred choice for high-performance street, racing, and forced induction applications. This gasket is compatible with both stock and aftermarket cylinder heads featuring 18-degree or 23-degree valve angles.