Cylinder Head Gasket MLS 3.950 Bore GM LS

The Cylinder Head Gasket MLS 3.950 Bore GM LS is engineered for high-performance LS-platform engines where precision sealing under extreme combustion pressure is non-negotiable. From street builds to track applications and law enforcement pursuit vehicles, this OEM-quality gasket delivers the reliability required when engine integrity cannot be compromised. Designed by MAHLE ORIGINAL/CLEVITE—a manufacturer trusted across military vehicle maintenance programs and professional automotive shops—this gasket addresses the specific bore diameter and sealing demands of GM LS powerplants.

Multi-Layer Steel (MLS) construction provides superior gasket performance compared to conventional materials by distributing clamping load evenly across the 3.950-inch bore surface, reducing hot-spot failures and micro-leakage that compromise combustion efficiency. The gasket's precisely machined profile ensures proper sealing against the cylinder head and block surfaces, critical for maintaining compression ratios and preventing coolant cross-contamination—issues that have sidelined operational vehicles in the field. At just 1.25 pounds, this component integrates seamlessly into engine assembly while maintaining the dimensional tolerances (8.75 x 0.25 x 24 inches) required for proper fit on LS-platform cylinder heads.

Professional technicians, engine builders, and vehicle maintenance teams rely on this gasket for LS engine rebuilds, head gasket replacement, and performance upgrades where OEM specification is the standard. Compatible with all GM LS-series engines utilizing 3.950-inch bore dimensions, installation requires proper head torque sequencing and surface preparation to maximize sealing integrity and service life. Whether rebuilding a duty vehicle or restoring a performance platform, the Cylinder Head Gasket MLS 3.950 Bore GM LS ensures consistent, pressure-tested reliability.