Briggs & Stratton Air Filter - This flat panel style, pleated-paper air filter provides superior protection against the destructive effects of dirt ingestion. Used on select Quantum and 625-675 & 625e, 675e, 725e Series, and many other engines, this OEM part ensures proper fit and performance to maintain the life of your Briggs & Stratton engine. Replacement air filter for 3.5-6.5 HP quantum engines Helps keep your engine running at peak performance Designed to exact OEM standards, manufactured and tested to help deliver optimum performance Genuine OEM replacement part