A-B1311389GS-AI FILTER-FOAMOne New Aftermarket Replacement Foam Air Filter Fits Briggs and Stratton (Fits Briggs & Fits Stratton) Small Engines This foam air filter element is a direct aftermarket replacement Fits Briggs and Stratton small engine applications. The foam pre cleaner element sits in the air cleaner assembly and provides the first line of defense against dirt and debris ingestion, helping protect engine internals and maintain clean airflow for consistent