3.910 MLS Head Gasket .051 - GM LS1

The Cometic Gaskets 3.910 MLS Head Gasket .051 – GM LS1 is a precision cylinder head gasket engineered for high-performance LS-series engine builds and professional engine rebuilds. This multi-layer steel gasket is designed specifically for GM LS1 applications where compression thickness and bore diameter are critical factors in achieving a proper seal and maintaining engine integrity. Whether you're restoring a stock LS1, upgrading a performance platform, or conducting a complete engine overhaul, this gasket delivers the reliability and durability expected from Cometic's reputation in OEM and aftermarket gasket manufacturing.

Manufactured with multi-layer steel construction, the 3.910 MLS Head Gasket features a 0.051-inch compression thickness that matches OEM specifications for the GM LS1 engine family. The MLS (Multi-Layer Steel) design provides superior sealing performance across varying combustion pressures and thermal cycling, preventing coolant and oil weeping that can occur with older solid copper or composite gaskets. The 3.910-inch bore diameter is precisely machined to match LS1 cylinder specifications, ensuring perfect alignment and contact across the entire head-block interface. This construction method allows the gasket to accommodate minor surface irregularities while maintaining a consistent, reliable seal throughout the engine's operating range.

This gasket is essential for anyone rebuilding or servicing LS1 engines, whether for street applications, performance modifications, or complete engine restoration. Installation requires standard cylinder head gasket procedures with proper torque sequencing to ensure optimal sealing performance. The Cometic Gaskets 3.910 MLS Head Gasket .051 – GM LS1 is sold individually and is compatible exclusively with GM LS1-series platforms, making it the correct choice for original equipment replacement or quality aftermarket rebuild work.