AUTOKAY Petcock Fuel Tap Cock Valve for Yamaha DT2 DT250 DT3 DT360 DT400 IT175 IT250 IT400 Replacing OE#: 438-24500-01-00, 214-24500-02-00,498-24500-01-00 Suitable for Vintage Yamaha AT,CT,DT,IT,RT,XT Trail Motorcycle Dirt Bike. Please make sure your original part number matches one of the numbers listed here before purchasing to ensure fitment. Gas hose/line, no vacuum line as it is NOT required to operate. 3 position swith: ON /OFF/REDERVE. (ON: allow you to operate with normal fill-ups; OFF: completely shuts off gas flow when you are done riding; RESEVE: allow you to access the lower portion of the gas tank when gas level is low.)