SBM Copper Head Gasket RH 4.060 x .043

The SBM Copper Head Gasket RH 4.060 x .043 is a professional-grade cylinder head gasket engineered for small block Mopar applications, specifically designed for the right-hand (passenger) side of the engine block. Built by SCE Gaskets—a leader in premium gasket technology—this copper head gasket serves builders, mechanics, and enthusiasts who demand reliability during high-performance rebuilds, restorations, and street or race engine assembly. Whether you're refreshing a tired Mopar mill or constructing a modified power plant, a quality head gasket is the foundation of compression integrity and longevity.

Copper construction is the gold standard for serious engine builders because it offers superior heat transfer, conformability, and reusability compared to composite gaskets. The 4.060-inch bore diameter and 0.043-inch compression thickness are precisely calibrated to match small block Mopar cylinder head and block deck surfaces, ensuring optimal sealing pressure and minimal blow-by. This gasket's material composition resists degradation from coolant additives, thermal cycling, and combustion heat—critical factors in engines running higher boost levels, nitrous oxide systems, or sustained high RPM. The SBM Copper Head Gasket RH maintains its structural integrity across temperature swings and mechanical stress, reducing the risk of compression leaks or coolant seepage that can compromise engine performance and lifespan.

This gasket is essential for anyone rebuilding a small block Mopar engine—whether it's a 340, 360, or bored small block variant—and is compatible with stock and modified cylinder heads. Installation requires proper torque sequencing, clean deck surfaces, and correct bolt tension to achieve full gasket potential; always consult your engine manual or rebuilding guide for torque specifications and sequence. Mechanics and builders trust SCE gaskets for their consistency and durability, making the SBM Copper Head Gasket RH a cost-effective choice that pays dividends in reduced comebacks and customer satisfaction on both street and race engines.