1994-2000 Yamaha YFB250FW Timberwolf 4x4 ATV Oil Filter Exceeds O.E.M. Standards for Filtration and Service Life High Quality Materials Allow for Use with Standard and Synthetic Oils Low Internal Resistance Allows for Maximum Oil Flow Internal Check Valve Prevents Oil Drain and Dry Starts Compatibility: 1994-2000 Yamaha YFB250FW Timberwolf 4x4