Compatible with Briggs Stratton: Model # BS491588S 491588 4915885 399959 push lawn mower air filter, part # 4101 5043 5043A 5043D 5043H 5043K. Fit 3.5-6.5 hp quantum engines, 625e 675ex 725ex 625-675 series element. Push Lawn Mower / Tractor Air Cleaner: For model # JD-pt15853 lg491588, 102-549, Oregon 30-710 30-927, Rotary 2838, Ariens 21529800 air purifier, Replace Original Filter. Replace for part number of Toro, Troy Built, Craftsman, Honda walk behind lawn mower / tractor genuine air filter. High Quality: Factory filter, excellent filter paper, metal mesh protecting design. Tested in dust and cutting grass conditions, meet OEM standards. Separate packaged, easy store. Size: 5-1/4″ Length ?? 4-1/2″ Width ?? 13/16″ Height. What You Get: 5 pcs excellent air filter, our worry-free and friendly customer service.