A-B14148-AI FILTER (5 X 492889)Five New Aftermarket Replacement Air Filter Pre Cleaners Fits Briggs and Stratton (B&S) Single Cylinder Engines This is a pack of 5 foam air filter pre cleaners (part 492889) Fits Briggs and Stratton single cylinder small engines. The flat panel foam pre cleaner wraps over the primary air filter cartridge (494511S) to provide an extra layer of protection, catching larger debris before it reaches the main filter element and protecting the engine from