All Acerbis tanks include gas cap, and vent hose. Yamaha WR250F 2003-2005 Yamaha WR450F 2003-2004 Yamaha YZ250F 2003-2005 Yamaha YZ450F 2003-2005. If purchasing for 2003-2004 WR model, 2003-2005 YZ-F style radiator shrouds will be needed to fit the tank correctly.
