Cometic C5769-098 MLS Cylinder Head Gasket Pontiac Bore - 400/428/455 V8 4.200

The Cometic C5769-098 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Pontiac 400, 428, and 455 cubic inch V8 engines. This high-performance gasket features a 4.200-inch bore diameter and a compressed thickness of .098 inches (approximately 2.5mm), making it ideal for both stock rebuilds and performance applications.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme temperatures and pressures
• 4.200-inch bore diameter optimized for Pontiac big block V8 engines
• .098-inch compressed thickness allows for precise compression ratio tuning
• Advanced embossment technology ensures even clamping pressure distribution
• Stainless steel construction with proprietary coatings resists corrosion and micro-movement
• Exceeds OEM specifications for sealing performance and longevity

Cometic MLS gaskets are the preferred choice of engine builders and enthusiasts due to their ability to withstand the demanding conditions of high-performance and racing applications. The multiple layers of stainless steel provide excellent recovery characteristics, accommodating minor surface imperfections while maintaining consistent sealing pressure. This gasket is compatible with both cast iron and aluminum cylinder heads when proper surface preparation is performed.