Sports Parts Inc Fuel Flow Shut-Off Valve L7118 Virtually eliminates the problem of fuel sloshing back into the carburetor when the front of a snowmobile is in a higher than normal position. This leak proof rugged steel construction ball valve is a panel mount 90 degree fuel flow. Complete with nut, washer and panel off-on decal. Used with 1/4in. I.D. hose. Requires 9/16in. diameter hole in panel.