GM Head Gasket - RH LSX Block 4.200 Bore

The GM Head Gasket - RH LSX Block 4.200 Bore is a critical sealing component engineered for high-performance and stock GM LSX-based engine builds. This right-hand gasket is essential for anyone rebuilding or refreshing a GM small-block engine, whether you're restoring a classic muscle car or maximizing output in a modern performance application. The 4.200-inch bore specification matches premium GM and aftermarket LSX block configurations, making this gasket a direct fit for precision engine assembly and long-term reliability.

FEL-PRO manufactures this head gasket using advanced elastomer and steel construction designed to withstand extreme combustion pressures, cylinder head clamping forces, and thermal cycling inherent to LSX engines. The gasket's material composition provides superior sealing across the deck surface, preventing coolant and oil leakage between the cylinder head and block while maintaining dimensional stability under boost, nitrous, or naturally aspirated operation. The precision-engineered bore opening ensures zero obstruction to critical cooling passages and oil galleries, critical for maintaining engine longevity during high-RPM sustained driving or racing conditions.

Serious LSX enthusiasts, engine builders, and performance mechanics rely on FEL-PRO head gaskets to deliver consistent sealing across repeated dyno pulls, street driving, and track use. This right-hand gasket is the correct choice for RH cylinder head installation on LS or LSX platforms ranging from 5.3L to 6.2L displacements. Proper torque specification and head bolt sequencing ensure optimal gasket compression; always consult your engine builder's technical documentation or OEM service manual for correct installation procedure and final torque values to guarantee leak-free performance.