4.130 MLS Head Gasket .060 - GM LS1

The Cometic Gaskets 4.130 MLS Head Gasket .060 for GM LS1 engines is a precision multi-layer steel cylinder head gasket engineered to seal high-compression combustion chambers with reliability. This 0.060-inch compression thickness gasket is designed specifically for LS-series engines and represents the critical sealing component between the cylinder head and engine block. MLS (multi-layer steel) construction delivers superior conformability and resealing capability compared to conventional gasket materials, making it essential for both stock and modified LS engine builds.

The 4.130-inch bore specification matches the precise cylinder dimensions of LS1 platform engines, ensuring proper gasket compression and sealing across all combustion chambers. The 0.060-inch thickness represents a specific compression height critical for maintaining correct piston-to-head clearance and combustion chamber volume—critical factors for engine performance, timing curves, and detonation control. MLS gaskets provide enhanced durability in high-heat and high-boost environments by resisting blow-by and coolant migration while maintaining consistent clamping load across the entire sealing surface. This gasket is manufactured to Cometic's quality standards and is suitable for rebuilds, performance upgrades, and high-mileage engine restoration where proper sealing integrity is non-negotiable.

This gasket serves builders and technicians working on LS1 engines across a range of applications—from street engines requiring long-term reliability to modified builds where higher boost pressure and heat demand premium sealing performance. Proper head gasket selection is foundational to engine longevity; using the correct bore diameter and compression thickness prevents head lift, compression loss, and coolant leakage that can lead to catastrophic engine damage. The Cometic MLS design is sold individually, allowing builders to source the precise number of gaskets required for their project. Verification of LS1 compatibility and correct installation procedures per manufacturer specifications is essential before assembly.