4.100 MLS Head Gasket - .041 SBC LS1 LH

The FEL-PRO 4.100 MLS Head Gasket – .041 SBC LS1 LH is a left-hand cylinder head gasket engineered for GM LS-series engine platforms. Designed with multi-layer steel construction and a 0.041-inch compression thickness, this gasket delivers the precision sealing required for LS1 engine builds and rebuilds. The 4.100-inch bore specification ensures proper fitment on compatible LS applications, making it essential for anyone assembling or restoring an LS-series powerplant.

FEL-PRO's multi-layer steel gasket construction provides superior durability and consistent sealing under thermal and pressure cycling—critical for high-performance and street-driven LS engines alike. The .041-inch compression thickness is calibrated to work within OEM and commonly used aftermarket head combinations, helping maintain proper combustion chamber volume and engine geometry. As a driver-side gasket, this component is paired with a right-side counterpart to complete the head gasket set on dual-overhead-cam LS architectures.

Engine builders, restoration shops, and experienced enthusiasts rely on FEL-PRO gaskets for their consistent quality and OEM-equivalent performance. This gasket is specified for LS1 and compatible LS-series builds where proper sealing between the cylinder head and block is non-negotiable. Whether you're performing a complete engine rebuild, refreshing a high-mileage platform, or assembling a performance combination, this left-hand head gasket ensures that critical seal is maintained across temperature extremes and power cycles.