This rectifier voltage regulator is designed for use with Mercury Mariner outboard engines. It has 6 wires and is model number 815279-3. The rectifier voltage regulator is compatible with a range of manufacturer part numbers, including 815279-5, 815279T, 830179-2, 830179T, 854515, and 815279-3. It is suitable for use with a range of outboard engines and is an essential component for any boat owner looking to maintain their vessel's electrical system.