Cometic C5817-098 GM Gen V/VI Big Block MLS Cylinder Head Gasket Bore - V8 4.320

The Cometic C5817-098 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM Generation V and VI Big Block V8 engines. This gasket features a 4.320-inch bore diameter and a compressed thickness of .098 inches (2.49mm), providing exceptional sealing capability for high-performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior strength and durability
• 4.320-inch bore diameter designed for GM Big Block V8 engines
• .098-inch compressed thickness provides optimal compression sealing
• Compatible with Generation V and VI GM Big Block platforms
• Engineered to handle high cylinder pressures and temperatures
• Allows for proper thermal expansion and contraction cycles
• Embossed stainless steel layers with elastomeric coating

Cometic MLS gaskets utilize multiple layers of stainless steel with specialized coatings to create a superior seal that rebounds with engine movement and temperature changes. The embossed layers provide multiple sealing points while allowing the gasket to conform to minor surface imperfections. This design is ideal for performance engines, forced induction applications, and high-compression builds where traditional composite gaskets may fail.