SKU: M77VS50789
UPC: 639789130129
MPN: VS50789
The Valve Cover Gasket Set SBF 351C-400 .125 Thick from MAHLE ORIGINAL/CLEVITE is engineered for builders and restorers working with Ford Cleveland and modified small-block engines. This matched pair addresses one of the most common leak points in vintage and performance engine builds—the valve cover interface—where proper sealing is essential to prevent oil seepage and maintain engine cleanliness. Designed specifically for the 351C and 400 cubic-inch displacement engines, this gasket set delivers the precision fit required for reliable, long-term operation in street, strip, and show applications.
Manufactured from cork and fiber composite material, the .125-inch thickness provides optimal compression and conformability to cast iron valve cover surfaces while resisting oil degradation and heat cycling. The gasket profile is contoured specifically for Yates head applications, ensuring perfect alignment with bolt hole patterns and sealing surfaces without gaps or over-compression that can cause pinching or premature failure. Cork-fiber construction offers superior resilience compared to synthetic alternatives in high-heat environments, maintaining seal integrity across engine startup cycles, sustained cruising, and extended power delivery. The pair format ensures both left and right valve covers receive matching, OEM-equivalent gaskets for symmetrical sealing performance.
Engine builders, restoration shops, and DIY enthusiasts restoring or rebuilding 351C and 400 engines will benefit from this direct-fit solution that eliminates guesswork during reassembly. Installation is straightforward: simply position the gaskets on the cylinder head, install the valve covers with factory or performance bolts, and torque to specification. Compatibility with Yates head castings makes this gasket set ideal for Cleveland-based performance projects, whether you're refreshing a vintage muscle car, building a hot rod foundation, or maintaining a modified engine platform. Proper gasket replacement during any valve cover removal prevents costly oil leaks and keeps your engine bay clean for years of reliable operation.
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