Genuine replacement carburetor kit for single cylinder engines. This OEM part is used on select 3.5 and 4 HP Max Series, Quantum, and 5 HP Industrial Plus horizontal shaft engines and ensures proper fit and performance to maintain the life of your Briggs & Stratton engine. . Item: Carburetor Overhaul Kit Only Briggs Stratton genuine parts are specially designed to exact OEM standards, manufactured and tested to help deliver optimum performance in Briggs Stratton engines. Not only are Briggs Stratton genuine parts guaranteed to fit, but using them ensures that the Briggs Stratton engine they are installed on complies with applicable (EPA) emission regulations.