0-351-06 Durite 4 Position automotive key switch, Off, ignition, pre-heat, heat start, (off then clicks into 1st position then clicks into 2nd position which spring returns to 1st position) Requires 16mm diameter panel hole, Supplied with 2 keys, Spare or replacement key number: 0-351-10, Quality replacement for: Lucas: 34228, 35670, 54033922.