Prevent your lawnmower's engine from getting ruined by dirt, dust, and debris and keep it running like new with Briggs & Stratton Air Filters! This Air Filter is designed for use with Briggs & Stratton 3.5 and 3.75 HP Classic or Sprint Engines (made after 1992) and 4 HP Quattro Engines and replaces Briggs & Stratton 272235S Air Filter. Manufacturer Part #:272235S.