【Replacement OEM Part Code】Air filter replaces for B&S 394018 394018S 392642 5050H 5050B 4135; for John Deree LG394018JD, Toro 21530000, Craftsman 24150. 【Replacement OEM Part Code】Pre filter replaces for B&S 271271, 272490, 272490S; for John Deere LG272490, LG272490S, M84655, PT8999 【Compatible Models】Compatible with BS 290400, 290700, 294400, 294700,303400, 303700, 350400, 350700, 400400, 401400, 402400, 404400, 422400 for L-Head Twin horizontal and V-Twin Vanguard engines 【Protects your engine】This air filter from Lonsda has extremely strong absorption capabilities, preventing impurities in the air from entering. Its excellent filtration performance ensures stable engine performance and extends the life of the engine by at least 20%, saving you the cost of replacing the engine. 【After Sales Service】90 days no question warranty. If you have any problem, Glad to hear from your side. refund or re-send, it's up to you. The air filter fits for briggs and stratton 394018 394018S 392642 John Deree LG394018JD Craftsman 24150 and the pre filter fits for briggs and stratton 271271 272490 272490S. The 394018 394018s air filter is also compatible with briggs and stratton V-Twin Vanguard Engine.The 394018 394018s air filter are made of high quality foam, paper and metal and can prevent impurities in the air from entering effectively.