Briggs & Stratton Air Filter V Twin This round style, pleated-paper air filter provides superior protection against the destructive effects of dirt ingestion. Used on select Vanguard V-Twin engines, this OEM part ensures proper fit and performance to maintain the life of your Briggs & Stratton engine. Fits L-Head Twin Horizontal and V-Twin Vanguard Engines Uses 272490S Pre-Cleaner Designed to exact OEM standards, manufactured and tested to help deliver optimum performance