Vulcan CR Head Gasket RH GM LSX 4.200 X .059

The SCE Gaskets Vulcan CR Head Gasket RH GM LSX 4.200 X .059 is a precision-engineered cylinder head gasket engineered for high-performance LS-series engine builds. This right-hand gasket features SCE's vulcan cut-ring technology, combining steel core laminate construction with a 4.200-inch bore diameter and 0.059-inch compression thickness to deliver reliable sealing across demanding power levels. Designed specifically for GM LS platforms, this gasket is essential for builders seeking repeatable, leak-free performance in both naturally aspirated and forced-induction applications.

The 0.059-inch compression thickness positions this gasket in the thin-fire-ring category, optimizing combustion chamber geometry and supporting higher compression ratios while maintaining structural integrity under elevated cylinder pressures. The steel core laminate construction provides superior durability compared to composite gaskets, resisting blow-by and thermal cycling degradation. The vulcan cut-ring design—SCE's proprietary sealing technology—uses precision-machined cutting surfaces to establish a superior seal without reliance on conventional embossed or graphite facings. This approach delivers consistent gasket performance across multiple heat cycles, a critical advantage in endurance applications or street engines subject to varying load conditions.

This gasket is specified for LS-series engine platforms, including LSX variants. It is sold individually and is the right-hand (passenger-side) component; builders assembling an LS engine will require a left-hand counterpart for the opposite cylinder bank. Critical applications include naturally aspirated builds seeking maximum compression and sealed peak pressure, as well as turbocharged and supercharged LS engines where gasket reliability under transient spikes is non-negotiable. LS platform builders prioritizing consistent gasket performance and longevity over a wide operating envelope will find the vulcan cut-ring construction and steel core laminate durability particularly valuable.