Reliable Power Compatible with Mercury Outboard – 815279T Voltage Regulator This high-performance voltage regulator rectifier is designed to deliver stable voltage and reliable operation Compatible with Mercury outboard motors ranging from 40HP to 275HP.this 6-wire regulator is a direct fit replacement for OEM parts 815279T, 883072T, 854515, and 815279-3. Compatible with: Mercury Outboard Engines: 40HP, 50HP, 55HP, 60HP, 75HP, 90HP, 100HP, 115HP, 125HP, 135HP, 150HP, 175HP, 200HP, 225HP, 250HP, 275HP Replaces OEM Part Numbers: 815279T, 883072T, 854515, 815279-3