A-B14111-AI FILTER (6 X 272490S)Six New Aftermarket Replacement Air Filter Pre Cleaners Fits Briggs and Stratton (B&S) Engines This is a 6 pack of aftermarket replacement foam air filter pre cleaners (272490S) Fits Briggs and Stratton small engines. The wrap style foam pre cleaner installs over the main air filter cartridge and traps large dirt and debris before they reach the primary filter element, extending main filter life and protecting the engine from the destructive effects