A B1704197 AI BREAKER CIRCUIT model Blackhawk HP This aftermarket replacement throttle valve This aftermarket replacement throttle valve (also called a valve throttle or carburetor throttle slide valve) Fits Briggs and Stratton (B&S) small engines and controls airflow through the carburetor to regulate engine speed and power output One New Aftermarket Replacement Muffler that Fits Allis Chalmers Tractor Models 160 (W PERKINS DIESEL ENGINE 1968 1973) Replaces Part Number(s): This aftermarket replacement circuit breaker (Breaker Circuit) protects the electrical system of Fits Briggs and Stratton generators and outdoor power equipment by interrupting the circuit in the event of an electrical overload or short circuit