# 815279A2 Mercury Rectifier | Genuine Used Part

🔧 Product Description

  

Genuine Mercury Voltage Regulator / Rectifier - Part Number: 815279A2

  

A genuine Mercury rectifier / voltage regulator used on selected Mercury, Mariner and Force charging systems. This 5-wire charging component converts stator AC output into regulated DC voltage for battery charging and electrical-system supply.

  

⚙️ Key Features

  

• Genuine Mercury rectifier / voltage regulator

• Correct Mercury part number 815279A2

• 5-wire regulator / rectifier family

• Used on Mercury / Mariner / Force two-stroke charging systems

• Cross-references with CDI, Sierra and Mallory aftermarket replacements

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 8M0084173 later Mercury regulator reference

• 8M0045112 related later Mercury regulator reference

• 883072T related regulator reference

• 883071A1 related regulator reference

• 854515T1 related regulator reference

• 854514T1 related regulator reference

• 830179A3 related regulator reference

• 830179A2 related regulator reference

• 815279A2 earlier regulator / rectifier reference

  

OEM / Related Numbers:

  

• 815279A2

• 815279T

• 815279-1

• 815279-2

• 815279-3

• 815279-4

• 830179A2

• 830179A3

• 830179T

• 854514

• 854514A1

• 854514T

• 854514T1

• 854515

• 854515A1

• 854515T1

• 883071A1

• 883072

• 883072T

• 8M0045112

• 8M0084173

  

Aftermarket / Verified Equivalents:

  

• CDI Electronics: 194-5279

• Sierra: 18-5741

• Sierra: 18-5742

• Sierra: 18-5743

• Sierra: 18-5744

• Mallory: 9-17101

• Protorque / aftermarket: PH350-0005

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner / Force charging systems using the 5-wire regulator family

  

Typically suits:

  

• Engine models:

• Mercury / Mariner 25HP electric start 4-stroke - serial 0G590000 to 0G760299

• Mercury / Mariner 30HP 2-cylinder - serial 0G053314 to 0G590100

• Mercury / Mariner 30HP 3-cylinder - serial 0G590000 to 0T979999

• Mercury / Mariner 40HP 2-cylinder and 4-cylinder applications

• Mercury / Mariner 50HP to 75HP 3-cylinder applications

• Mercury / Mariner 90HP 3-cylinder applications

• Mercury / Mariner 100HP to 125HP 4-cylinder applications

• Mercury / Mariner 135HP to 225HP V6 applications where the serial-numbered charging diagram specifies this regulator family

• Force 40HP to 150HP charging systems where the regulator diagram specifies this family

  

• HP Range: commonly 25HP - 225HP Mercury / Mariner plus selected Force applications

• Engine Type: Mercury / Mariner / Force outboard charging system

• Year Range: approximately late-1980s through mid-2000s depending on horsepower and serial range

• Serial Note: Match by exact serial-numbered charging-system diagram, wire count and connector style.

  

🔌 Function

  

The rectifier / regulator converts AC current from the stator into regulated DC voltage for battery charging and engine electrical-system operation.

  

Common signs of failure:

  

• Battery not charging

• Overcharging or high battery voltage

• Tachometer not working or erratic

• Burnt or melted regulator wiring

• Blown charging-system fuse

• Battery goes flat while running

• Charging voltage remains incorrect after stator and battery checks

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 125.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 125.00 AUD | In stock |

## Images

- 815279A2 Mercury Rectifier | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/815279a2-mercury-rectifier-genuine-used-part)
> Updated: 2026-06-29