Description Sufficient quantity: This air filter for briggs and stratton can be used to keep the intake air clean and prevent the engine from sucking running During this period the air contains dirt particles. Our kit contains 2 lawn mower air filter cleaners that can be replaced regularly to meet your replacement needs, no need to spend extra time buying. High-quality material: This air filter is made of durable plastic, which is safe, durable and practical. It has good pressure resistance, corrosion resistance and water resistance. It is easy to carry and use, and can be used for a long time to maximize engine life. Pleated Paper Design: This oval shaped pleated paper air filter prevents the damaging effects of inhaled dirt, air. The filter is designed to be highly breathable despite high filtration, providing excellent protection for the engine and preventing the damaging effects of inhaled dust. . Effective Protection: Suitable for most lawn mower engines, it can be used to keep the intake air clean, prevent the engine from inhaling air with dust particles and impurities, which will increase the rate of wear and damage, and prevent Premature wear of the engine prevents premature wear of the engine and prolongs the service life, thereby ensuring the reliability of the lawn mower. Compatibility: Our replacement air filter is an ideal replacement for Briggs & Stratton 491588 491588S 399959, John Deere PT15853.