A-B1591797-AI SPACER-CARBURETOROne New Aftermarket Replacement Carburetor Spacer Fits Briggs and Stratton (Fits Briggs & Fits Stratton) Engines This carburetor spacer mounts between the carburetor and the intake manifold on Fits Briggs and Stratton small engines. It provides proper carburetor alignment, helps optimize the air fuel mixture entering the engine, and reduces heat transfer from the engine block to the carburetor to help prevent vapor lock and improve fuel efficiency.