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 YFM350 RAPTOR 2004-2007 2013 YFM350FX WOLVERINE 4WD 1995-2005 YFM350X WARRIOR 1987-1988 YFM350X WARRIOR 2WD 1989-2004 YFM600 Grizzly 4WD 1998-2001 YFM600FWA GRIZZLY 2002 YFM660 GRIZZLY 2002-2008 YFM660FA GRIZZLY AUTO 4X4 2009