Danbojit regulator rectifier 815279T 6-wire for Mercury 40–275HP outboards — restores 14–15V charging

High-quality Danbojit 815279T regulator rectifier that replaces Mercury 883072T and related models to restore stable 14–15V charging on compatible outboards.

When your Mercury outboard's charging system is underperforming or the battery won't hold a charge, a failing regulator/rectifier is often the culprit. The Danbojit 815279T is a 6-wire voltage regulator/rectifier engineered to match the wiring and terminal layout of multiple Mercury part numbers, offering OEM-style performance for 40–275 HP engines from selected model years.

Which Mercury engines and model years does this replace?

The Danbojit 815279T is made to replace a long list of Mercury/Mariner voltage regulator references used across many outboard sizes. It covers small to large engines and a broad range of production years, enabling straightforward swaps on compatible alternators.

• Covers 40 HP through 275 HP engines (examples: 40HP, 50HP, 60HP, 75HP, 90HP up to 275HP).
• Fits model-year windows such as 1988–2006 depending on horsepower and model.
• Listed compatible Mercury part numbers include 883072/883072T, 815279 series (including 815279-3), 854515, TRR3072 and many variants.

How does the 6-wire connector map to my boat wiring?

This unit uses the common 6-wire terminal identification found on many Mercury regulators, simplifying installation without major rewiring. Wire colors and terminal functions match the standard layout so you can connect tach, AC, sense, B+/B- and AC outputs correctly.

• Gray = Tach signal, for engine RPM reading.
• Yellow wires = AC from stator to rectifier sections.
• Red (female) = Sense input; Red (male) = B+ output to battery/boat wiring.
• Black = B- ground return.

What performance and protection can I expect?

The Danbojit regulator/rectifier manages alternator output to maintain a charging voltage near 14–15 volts, protecting batteries from overcharge while ensuring sufficient charging capacity under load. It combines rectification and voltage regulation in a single module sized for marine alternators on the specified HP range.

• Regulates alternator output to keep battery charging within safe voltage range.
• Rectifies AC from the stator into DC for battery charging and electrical systems.
• Constructed to replace OEM regulators located inside or mounted to the alternator housing.

Is this an OEM part and how reliable is it?

The Danbojit 815279T is an aftermarket replacement built to match the fit and terminal layout of the listed Mercury part numbers. It is produced to OEM-style specifications to restore charging system function, but as with any electrical part, follow proper installation and testing procedures.

• Designed as a direct-fit replacement for many OEM part numbers like 815279-3 and 883072T.
• Replaces internal or alternator-mounted regulator modules without modifying harnesses when terminals match.
• Contact the seller if you encounter quality or compatibility issues for troubleshooting or return assistance.

Who is this for: Boat owners, marine mechanics and service shops who need a reliable replacement regulator/rectifier for Mercury and Mariner outboard charging systems across a wide horsepower range. Choose this Danbojit module if your alternator is producing inconsistent voltage, your battery overcharges or undercharges, or if you need a direct-fit replacement matching the 6-wire terminal layout used by many Mercury part numbers.