Sierra 18-5743 Voltage Regulator Sierra Voltage Regulator Meets or exceeds the original equipment quality Sierra part number: 18-5743 Interchangeable with the following: CDI 194-5279, Mallory 9-17101, Mercury 815279-5, 815279-3, 883072T, 856748, 8M0084173, 854515T1, 854515, 8301792, 815279T, 830179T Fit specific, check part numbers to ensure proper fit