Replacement for powerhead 40003916-001 used in V4043H1056 and V4043H1106 and V4043H1007 and V4043H1080 2-way zone valves with end switch. It can also be used to replace V4043C1156 (2-way valve without end switch) as well, by simply not connecting the switch wires. (Orange and Gray) This powerhead includes the motor, housing, and 2 mounting screws. This powerhead cannot be used to replace power-heads on 3-way valves such as V4073.