Putoline Oil is a Dutch manufacturer and supplier of high-quality oils and lubricants developed specifically for motorcycles, scooters and quads, making Putoline unique. Almost 50 years of experience and continual research allows Putoline to provide cutting edge products. Manufacturing their own products guarantees consistently high-quality motorcycle oils. Putoline Oil, Driven by Technology! Putoline air filters, based on leading-edge open-cell foam technology, bring users major benefits, including: Improved performance through increased airflow Improved protection through finer filtration levels Substantial cost savings through serviceability and re-use Fully reticulated (open cell) foam, as used in all Putoline filter products, consists of a honeycomb of tiny, interlocking cells of uniform size. Fits: Yamaha YFB250 TIMBERWOLF 2WD 1992-1998 YFB250FW TIMBERWOLF 4WD 1994-2000 YFM350ER MOTO 4 2WD 1990-1995 YFM350FW BIG BEAR 4WD 1987-1999 YFM350U BIG BEAR 2WD 1996-1999 YFM400 KODIAK 1996-1999 YFM400FWA KODIAK 4X4 1999