Vulcan C/R Head Gasket GM LSX RH 4.056 x .059

The SCE Gaskets Vulcan C/R Head Gasket for GM LSX RH 4.056 x .059 is a high-performance cylinder head gasket engineered for demanding LS-series engine builds. This right-hand passenger-side gasket features a steel core laminate construction with Vulcan cut-ring technology, delivering the compression thickness and bore diameter precision required for serious engine builders and performance enthusiasts pushing LS-series platforms to the limit.

The 4.056-inch bore diameter matches ported and high-displacement LSX heads, while the 0.059-inch compression thickness is optimized for elevated boost pressures and nitrous oxide applications. The steel core laminate design provides superior sealing integrity under extreme cylinder pressures, preventing blowby and maintaining combustion chamber isolation. The Vulcan cut-ring gasket face enhances clamping force retention, which is critical in forced-induction and naturally aspirated race engines where thermal cycling and vibration demand absolute reliability.

This gasket is specified for the right-hand (passenger) side of LS engines used in street performance builds, circle track racing, drag racing, and off-road competition. Engine builders selecting this gasket are typically working with large-displacement or boosted platforms where factory gaskets are insufficient. The Vulcan C/R design has become the industry standard for serious LS builds because its geometric profile maintains gasket preload across thermal cycles, reducing the risk of head lifting and coolant leakage.

SCE Gaskets is recognized within the LS and Gen V LT engine community for precision manufacturing and materials science—this gasket reflects that expertise. Each unit is produced to exact specification to ensure proper fitment and sealing with modern LS cylinder heads and block decks.