Cometic C5909-140 Ford Windsor MLS Cylinder Head Gasket Bore Thick - V8 4.030 140

The Cometic C5909-140 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Ford Windsor V8 engines equipped with AFR (Air Flow Research) aluminum cylinder heads. This gasket features a 4.030-inch bore diameter and a compressed thickness of .140 inches, making it ideal for performance builds requiring a slightly thicker gasket to achieve proper piston-to-head clearance and compression ratio adjustments.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under high cylinder pressures
• 4.030-inch bore diameter accommodates standard and slightly overbored Windsor V8 blocks
• .140-inch compressed thickness for precise compression ratio tuning
• Engineered specifically for use with AFR aluminum cylinder heads
• Embossed stainless steel layers with Viton rubber coating ensure maximum sealing capability
• Resists blown head gaskets even in high-boost or high-compression applications

Cometic MLS gaskets are the preferred choice among engine builders and performance enthusiasts for their exceptional ability to seal combustion chambers under extreme conditions. The multi-layer design allows the gasket to conform to minor surface imperfections while maintaining consistent clamping force across the entire sealing surface. This gasket is sold individually and is compatible with various Ford Windsor V8 applications including 289, 302, and 351W engines when fitted with AFR heads.