A-B1710268-AI FILTER-PRE CLEANEROne New Aftermarket Replacement Filter Pre Cleaner Fits Briggs and Stratton (B&S) Vanguard Single Cylinder Engines This foam flat panel pre cleaner slides over the main air filter cartridge (replaces OEM part number 710266) to provide a first stage barrier against dirt, dust, and debris before they reach the primary filter element. Keeping a clean pre cleaner in place extends primary filter life and helps protect the engine from abrasive wear. Install