Cometic C5334-140 GM Gen V/VI Big Block MLS Head Gasket Bore - V8 4.630

The Cometic C5334-140 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM Generation V and VI Big Block V8 engines. This high-performance gasket features a 4.630-inch bore diameter and .140-inch compressed thickness, providing exceptional sealing capabilities for performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• .140-inch (3.56mm) compressed gasket thickness
• 4.630-inch bore diameter optimized for big block applications
• Compatible with GM Gen V and Gen VI Big Block V8 engines
• Engineered to withstand extreme cylinder pressures and temperatures
• Embossed stainless steel layers with FKM (Viton) rubber coating

Cometic MLS gaskets utilize multiple layers of stainless steel with proprietary coatings to create a superior seal that adapts to block and head movement. The embossed design ensures consistent clamping pressure around the combustion chamber, coolant passages, and oil galleries. This gasket is ideal for high-performance street engines, racing applications, and forced induction setups where reliability under extreme conditions is critical.