Vacuum controlled fuel tap with M14x1 and M16x1.5 threaded connection. 2 different fastening nuts ensure this screw fit vacuum tap fits almost all scooters. The fuel tap is ideal for use in various CPI, GY6, Keeway, KYMCO, SYM, generic with metal tanks. Often a malfunction of this component can lead to difficulty starting and engine stutters or cut-outs when riding. If, for example, the diaphragm in the fuel tap sticks, fuel flow is inadequate. Only a complete exchange helps. The fuel tap fits tanks with M14x1 and M16x1.5 thread. Keeway Hurricane only till 2015.