A-B1796334-AI SHAFT-THROTTLEOne New Aftermarket Replacement Carburetor Throttle Shaft Fits Briggs & Fits Stratton Small Engines This aftermarket replacement carburetor throttle shaft is designed to fit select Fits Briggs & Fits Stratton (B&S) small engines. The throttle shaft is a precision carburetor component that controls the flow of air into the engine, directly regulating engine speed and throttle response. A worn or damaged throttle shaft can cause erratic idling, throttle