A-B1798576-AI FILTER-OILOne New Aftermarket Replacement Oil Filter Fits Briggs & Fits Stratton Small Engines This aftermarket replacement oil filter Fits Briggs & Fits Stratton Extended Life Series and Professional Series small engines. The filter attaches to the engine crankcase and removes harmful particulates and contaminants from the engine oil, helping to protect internal engine components and extend engine life. Recommended replacement interval is once per year or