Perfect match for the engine. A good direct replacement. Easy installation Stable characteristics, high reliability Durable and practical Specification: Name: Air filter Color: as photos Quantity:1pcs Size: 11.4*13.2CM Part No: 491588S/491588 / 399959 Fitment: Suitable For Briggs and Stratton Side Valve Engines Engines: Quantum Series 625, 650, 675(Current Engines), Model 12 series Also fits some horizontal crank engines used generators, cement mixers etc. Specifications: Perfect match for the engine. A good direct replacement. Easy installation Stable characteristics, high reliability Durable and practical Package Included: 1x Air filter Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement.