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 12.5-17 HP single cylinder engines and replaces Briggs & Stratton 496894S Air Filter and 272403S Pre-Cleaner. Manufacturer Part #:496894S & 272403S.