Cometic C4142-075 MLS Cylinder Head Gasket Bore Thickness - 86mm 075

The Cometic C4142-075 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for classic Ford Pre-Crossflow OHV Kent, Crossflow OHV Kent, Cosworth BD Series, and Lotus Twin Cam engines. This precision-manufactured gasket features an 86mm bore diameter with a compressed thickness of .075 inch (1.91mm), making it ideal for performance builds and engine rebuilds requiring reliable sealing under high compression and temperature conditions.

Advanced MLS Construction:

• Multiple layers of high-grade stainless steel for superior strength and rebound characteristics
• Outer layers embossed and coated with Viton fluoroelastomer on both sides for heat resistance up to 482°F (250°C)
• Uncoated stainless steel center shim layer allows thickness customization
• Excellent corrosion resistance for long-term durability

Performance Features:

• No sealants required for installation
• Ideal for aluminum-to-aluminum or aluminum-to-cast iron block configurations
• Withstands shearing forces between dissimilar materials
• Optimized for high output engines and demanding sealing environments
• Recommended surface finish: 50 microinches or finer

Cometic MLS gaskets are trusted by professional engine builders and motorsports teams for their exceptional sealing performance and reliability in high-stress applications.