TWIN AIR FUEL FILTER The Twin AIR tank filter is a special filter mounted in the fuel filler socket. It protects the tank against contaminants that may get into it when refueling in the field. The design captures contaminants larger than 40 microns. This is enough to fully protect the engine and fuel system.|Fits:| Yamaha Wr 250 F 2006-2013 || Yamaha Wr 450 F 2006-2013 || Yamaha yz 250 f 2006-2013 || Yamaha yz 250 f 50th anniversary limited edition 2006 || Yamaha yz 450 f 2006-2013 || yamaha yz 450 F 50th Anniversary 2006||TWIN AIR| Twin Air is the world's largest manufacturer of air filters, whose product line is constantly developing and expanding. Its origins come from sports and the experience gained there, thanks to which the products achieve the highest quality. The technology and design of Twin Air filters and accessories has been ahead of the competition for almost half a century. Moreover, Twin Air products are supplied by OEM to over 30 motorcycle companies around the world.|