Fits all small gasoline engines for mowers and tractors. Fits 1/4" I.D. or 5/16" I.D. fuel line. Prevents dirt and other particles in fuel tank from reaching carburetor. Fits 1/4" or 5/16" I.D. fuel line Fits all internal combustion engines up to and including 80 HP. (except diesel) Replaces Briggs & Stratton OE #