A-B1271466-AI FILTER-PRE CLEANEROne New Aftermarket Replacement Air Filter Pre Cleaner Fits Briggs & Fits Stratton (Fits Briggs and Stratton) Small Engines This foam wrap style air filter pre cleaner fits over the main paper air filter cartridge on select Fits Briggs & Fits Stratton L Head small engines. It acts as a first stage barrier, trapping dirt, dust, and debris before they reach the primary air filter, extending the life of the main filter and protecting the engine from