SBC 305 Head Gasket (1 Piece)

The SBC 305 Head Gasket from Mr. Gasket is a precision cylinder head gasket engineered for GM LS-series small-block engines. This single-piece gasket is designed to seal the critical interface between the cylinder head and engine block, preventing coolant and oil leakage while maintaining combustion chamber integrity. Enthusiasts and professional rebuilders rely on quality head gaskets like this to ensure reliable engine performance during both stock and modified applications.

The SBC 305 Head Gasket features a rubber-coated steel and graphite construction with a 3.870-inch bore diameter and 0.028-inch compression thickness, delivering the precise sealing required for LS-series architecture. The rubber coating provides conformability to ensure optimal contact across head and block surfaces, while the graphite and steel composition offers heat resistance and durability under sustained engine operation. This driver-side gasket is part of Mr. Gasket's Ultra-Seal line, known for reliable performance in demanding engine environments where traditional gaskets may fail.

This head gasket is ideal for engine builders, restoration shops, and LS-series engine enthusiasts tackling cylinder head removal or complete engine assembly. Proper installation requires careful surface preparation of both the cylinder head and block deck to maximize gasket effectiveness and longevity. Whether you're performing preventive maintenance, addressing a known leak, or building a high-performance LS engine, the SBC 305 Head Gasket delivers the sealing reliability expected from Mr. Gasket's reputation for quality engine components.