Briggs and Stratton 794421 Air Filter Cartridge 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 Only Briggs & Stratton genuine parts are specially designed to exact OEM standards, manufactured and tested to help deliver optimum performance in Briggs & Stratton engines Help keep your outdoor power equipment running at peak performance by using Briggs & Stratton replacement and maintenance parts