750258 1 7 8 Opening Use with All S S and Other 1 7 8 48MM Manifold

Designed to mitigate heat soak from the engine to the fuel system, this S&S Cycle insulator block acts as a critical thermal break. It is engineered to suit various intake requirements while maintaining the traditional 2 1/2-inch center-to-center mounting pattern found on Bendix and Keihin butterfly carburettors. The inclusion of a dedicated O-ring ensures an airtight seal against the manifold face, preventing performance-robbing vacuum leaks. Using these spacers helps maintain a cooler fuel charge, which is vital for stable idling and crisp throttle response in high-temperature operating conditions. S&S Cycle remains the industry standard for performance intake hardware, offering durability and precise fitment for riders looking to optimize their carburetted fuel delivery system.