4.100 MLS Head Gasket .060 - Ford 351C/400M

The 4.100 MLS Head Gasket .060 - Ford 351C/400M from Cometic Gaskets is engineered for builders and enthusiasts who demand precision in high-performance engine builds. This multi-layer steel cylinder head gasket is designed specifically for Ford Cleveland and Modified platforms, where stock gaskets fail under boost, compression, or extended track duty. Whether you're freshening a 351C stroker, upgrading a 400M with modern fuel injection, or pushing compression ratios on a street/strip combination, this gasket delivers the sealing integrity critical to engine longevity.

Cometic's multi-layer steel (MLS) construction uses precision-etched stainless steel layers bonded to a elastomer core, creating a gasket that resists blow-by, coolant seepage, and oil weeping across extreme operating conditions. The 0.060-inch compression thickness is a proven dimension for modified Cleveland and 400M applications, offering optimal clamp load distribution while maintaining proper combustion chamber volume for tuned engine combinations. The 4.100-inch bore diameter matches factory Cleveland/400M specifications, ensuring perfect alignment with cylinder wall runout and head surface finish—critical for preventing localized hot spots and gasket failure in high-compression or supercharged engines.

Mechanics and engine builders working on vintage muscle car restorations, Pro Stock competitors, and hot rod shops rely on Cometic MLS gaskets for reliability where OEM offerings fall short. Installation requires proper head surface preparation (8 microinch finish or better), correct bolt torque sequencing, and quality fasteners—non-negotiable steps for maximum gasket life. This gasket is sold individually, so verify your engine's cylinder count and order the appropriate quantity before assembly.