4.080 MLS Head Gasket .040 - SBF

The 4.080 MLS Head Gasket .040 - SBF by COMETIC GASKETS is a precision cylinder head gasket engineered for small block Ford engines requiring reliable sealing under high compression loads. This gasket is essential for engine builders, performance enthusiasts, and mechanics who demand consistent performance and durability in their rebuild or modification projects. Head gaskets are critical engine components that seal the cylinder head to the engine block, preventing coolant and oil leakage while containing combustion pressure—making quality construction non-negotiable for engine longevity.

This gasket features a multi-layer steel construction that provides superior durability and heat resistance across varying engine temperatures and pressures. The 4.080-inch bore diameter and 0.040-inch compression thickness are precisely manufactured to match small block Ford specifications, ensuring proper cylinder sealing and combustion chamber geometry. Multi-layer steel gaskets excel at conforming to machined surfaces while maintaining structural integrity, preventing blow-through and reducing the risk of head gasket failure during sustained high-RPM operation or boost conditions. The manufacturing standards applied to COMETIC gaskets reflect decades of industry expertise in gasket technology and material science.

Small block Ford engine builders—whether assembling a stock-displacement rebuild or a high-performance stroker package—rely on gaskets like this for trustworthy sealing performance. The .040-inch thickness accommodates specific deck height and combustion chamber volume requirements common in SBF applications, making proper fitment critical during engine assembly. Installation requires clean, properly prepared surfaces on both the block and cylinder head, along with correct torque specifications per your engine's manual. This gasket is sold individually, allowing builders to purchase exactly the quantity needed for their application.