Air Box Wash Cap by Twin Air® 4XM-E4480-00-00 - Orange Cap to seal the air box and air filter area. With a fully sealed rubber gasket on the leading edge Eases air box cleaning and leaves no gaps that would allow water to penetrate when used Easy to install and remove By Twin Air® Suitable for: YZ125-250 (MY1997-2015), YZ250F (MY2001-2013), YZ450F (MY2003-2009), WR250F (MY2001-2002), WR-YZ400F (MY1998-1999), WR-YZ426F (MY2000-2002)