GM LS Cyl Head Gasket 3.950 Bore .050

The MAHLE ORIGINAL/CLEVITE GM LS Cylinder Head Gasket with 3.950 inch bore and 0.050 inch compression thickness is a critical sealing component engineered for GM LS-series engine applications. This multi-layer steel gasket is designed to withstand the combustion pressures and thermal cycling inherent in high-performance and stock LS engine builds, providing a reliable seal between the cylinder head and engine block across a wide range of operating conditions.

The 0.050 inch compression thickness is a factory-standard specification for many LS variants, making this gasket an essential replacement during head gasket service, engine rebuilds, or performance upgrades. Multi-layer steel construction provides superior durability compared to single-layer gaskets, resisting blowout and maintaining compression integrity even under elevated boost conditions or extended high-RPM operation. The precise 3.950 inch bore dimension ensures proper alignment with LS cylinder head ports, preventing leak paths and ensuring optimal combustion chamber sealing. MAHLE ORIGINAL is the OEM gasket supplier for General Motors, establishing this gasket as a factory-equivalent solution backed by automotive engineering standards.

This gasket is essential for anyone performing cylinder head work on LS-powered vehicles—whether street machines, race engines, or stock restorations. Technicians and engine builders rely on MAHLE gaskets for their dimensional accuracy and consistency, reducing risk of repeated failures or leak issues during initial assembly. Whether replacing a blown gasket or freshening an engine during a comprehensive rebuild, this OEM-quality component ensures the job is done right the first time.

The GM LS-series engine platform spans multiple generations and displacements—from the original LS1 through modern variants—each with specific gasket requirements. Selecting the correct bore and compression thickness is critical to engine longevity. This part number 54442 is cataloged for compatibility with specific LS applications; verify your engine's exact specifications and cylinder head revision before ordering to ensure proper fit and sealing.