A-B1399039-AI FILTER-PRE CLEANEROne New Aftermarket Replacement Air Filter Pre Cleaner Fits Briggs & Fits Stratton Small Engines This flat panel foam and mesh pre cleaner mounts over the main air filter cartridge in the air cleaner assembly, capturing dirt and debris before they can reach the primary filter element and the engine. Installing a pre cleaner extends the service life of the main air filter and protects the engine from premature wear caused by dust ingestion. Install dry