Cometic C5331-086 MLS Cylinder Head Gasket Bore Chevy Big Block - 4.630

The Cometic C5331-086 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Chevrolet Mark IV Big Block V8 engines. This precision-engineered gasket features a 4.630-inch bore diameter and .086-inch compressed thickness, providing superior sealing and durability for both street and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for maximum strength and reliability
• 4.630-inch bore diameter optimized for big block Chevy applications
• .086-inch (2.18mm) compressed thickness
• Stopper layer design provides improved combustion seal and prevents liner movement
• Coated with a fluoroelastomer rubber that provides micro-sealing properties
• Withstands extreme cylinder pressures in high-performance and forced induction applications
• Accommodates thermal expansion and engine movement better than composite gaskets

Cometic MLS gaskets are engineered to withstand the demanding conditions of high-horsepower engines, making them ideal for performance street builds, drag racing, road racing, and marine applications. The advanced MLS technology ensures consistent clamping pressure across the entire gasket surface, eliminating hot spots and maintaining proper sealing even under extreme thermal cycling.