Spartan MLS Head Gasket LSX LH 4.123 x .051

The Spartan MLS Head Gasket LSX LH 4.123 x .051 from SCE Gaskets is a precision multi-layer steel cylinder head gasket engineered for GM LS-series engine builds and high-performance applications. This driver-side gasket is designed for builders and enthusiasts who demand reliable sealing under extreme combustion pressures and elevated engine temperatures. Whether you're rebuilding a stock LS engine or assembling a modified performance platform, this head gasket provides the durability and seal integrity critical for engine longevity.

The Spartan MLS Head Gasket LSX LH 4.123 x .051 features multi-layer steel construction, which combines steel shims with elastomer materials to create superior load distribution and consistent compression sealing across the cylinder head surface. The 4.123-inch bore diameter is precisely engineered to match LS cylinder head ports, while the 0.051-inch compression thickness is optimized for standard LS block deck heights and head bolt torque specifications. MLS (multi-layer steel) gaskets excel at handling thermal cycling and vibration, making them the industry standard for both naturally aspirated and forced-induction LS engines.

This left-hand (driver-side) gasket is essential for anyone completing an LS engine assembly or replacement and is compatible with virtually all GM LS-series platforms, including the LS1, LS2, LS3, LS7, and truck variants. Proper installation requires clean cylinder head and block surfaces, correct bolt torque sequencing, and appropriate gasket sealers per manufacturer specifications. The Spartan MLS Head Gasket LSX LH 4.123 x .051 is sold individually, so builders typically purchase two units—one for each cylinder head—to complete a full engine rebuild or head replacement job.