Cometic H1299SP8040S Ford 302/351 MLS Head Gasket 4.185" Bore .040" Thickness

The Cometic H1299SP8040S is a premium Multi-Layer Steel (MLS) head gasket designed for Ford 302 and 351 small block engines with a 4.185-inch bore diameter. This performance head gasket features a compressed thickness of .040 inches (1.02mm), making it ideal for high-compression builds and engine rebuilds requiring precise deck height control.

Key Features:

• Multi-Layer Steel construction with multiple layers of stainless steel for superior strength and durability
• 4.185-inch bore diameter accommodates stroker and overbored applications
• .040-inch compressed thickness for precise compression ratio tuning
• Stopper layer embossment design provides even clamping load distribution
• Viton rubber sealing beads around combustion chamber and fluid passages
• Eliminates gasket failure from blown head gaskets in high-performance applications
• Suitable for naturally aspirated, supercharged, and turbocharged engines
• Compatible with aluminum and iron cylinder heads

Cometic MLS head gaskets are engineered for serious performance applications where reliability is critical. The multi-layer design allows the gasket to conform to minor surface imperfections while maintaining excellent sealing properties under extreme cylinder pressures and temperatures. Perfect for street performance, drag racing, and road racing applications.