Cometic C5247-042 MLS Cylinder Head Gasket Chevy Small Block Bore - 4.125 042

The Cometic C5247-042 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This precision gasket features a .042" compressed thickness and is designed to accommodate a 4.125" bore diameter, making it ideal for performance rebuilds and engine builds requiring reliable sealing under high-stress conditions.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.125" bore diameter for compatibility with various small block builds
• .042" compressed gasket thickness
• Round bore design with integrated steam holes for proper coolant circulation
• Compatible with 18-degree and 23-degree cylinder heads
• Engineered for high-performance and racing applications

Cometic MLS gaskets utilize multiple layers of stainless steel with specialized coatings to create a superior seal that can withstand extreme cylinder pressures and temperatures. The gasket's design accommodates thermal expansion and contraction while maintaining consistent clamping pressure across the entire sealing surface. The inclusion of steam holes ensures proper coolant flow to prevent hot spots and ensure optimal engine temperature management.

This gasket is compatible with Chevrolet small block V8 engines including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch variants when bored to the appropriate specifications. Always verify bore diameter and head angle compatibility for your specific application.