Spartan MLS Head Gasket GM LT1/LT4 4.150 x .051

The Spartan MLS Head Gasket GM LT1/LT4 4.150 x .051 is designed for serious LS enthusiasts and engine builders who demand reliability under extreme conditions. This gasket is ideal for those rebuilding stock LT1 engines or pushing modified LT4 engines to their limits, providing the necessary combustion sealing integrity for modern performance engines.

Constructed from multi-layer steel (MLS), this head gasket excels where traditional composition gaskets fail, effectively handling repeated thermal cycling and cylinder pressure spikes without permanent deformation. The precise 4.150-inch bore size and 0.051-inch thickness ensure optimal load distribution across the gasket face, while the MLS construction resists micro-movement between the deck and head, preventing hot spot formation and coolant seepage.

This gasket is particularly beneficial for engine rebuilds, forced induction conversions, and track-focused LT1/LT4 applications where reliability is paramount. With its ability to maintain sealing performance across thousands of heat cycles, it is an excellent choice for high-performance builds that demand durability and efficiency.