For Briggs and Stratton ModelFits BandS Lawn Mower Air Filter No. 491588S 491588 4915885 399959 Part No. 4101 5043 5043A 5043D 5043H 5043K. Suitable for 3.5-6.5HP engine, 625e 675ex 725ex 625-675 series items. Applicable to lawnmower/tractor multi-brand air filters. It is a good air filter alternative for Al-Ko 470/520, PLM5121, Gutbrod, Vikings, Sabo, Gardol G553CME, Toro, Champion and Troy Mowers Built, Craftsmen, Honda, Husqvarna, Yardman, Lawn Chief, etc. More Compatible Models Lawn Mower/Tractor Air Filter: For John Deere Model # JD-pt15853 lg491588, Stens 102-549, Oregon 30-710 30-927, Rotary 2838, Ariens 21529800 , Champion 100263 Air Purifier, replace the original filter. High quality parts The filtration efficiency of the filter paper is up to 99.5%, a metal grid is protected at the rear and the whole room is surrounded by a foam rubber frame to reduce noise. OEM Standards 1 Briggs Stratton 491588S air filter is included. The size is 13.2cm*11.2cm*2.3cm. It conforms to OEM standards and is therefore compact and easy to install.