A-B14141-AI FILTER (5 X 271794S)Five New Aftermarket Replacement Air Filter Pre Cleaners Fits Briggs and Stratton Engines This listing includes a pack of five (5) wrap style foam air filter pre cleaners (271794S) Fits Briggs and Stratton small engines. The foam pre cleaner wraps around the primary paper air filter (393957S), adding a first layer of protection against dust, dirt, and debris before they can reach the main filter element. Used on select single cylinder L Head and