# 0511404 OMC Regulator | Genuine Used Part

🔧 Product Description

  

Genuine OMC / Johnson Evinrude Voltage Regulator - Part Number: 0511404

  

A genuine OMC voltage regulator used on selected older Johnson and Evinrude V4 and V6 outboard charging systems. This 3-wire regulator is commonly cross-referenced with 581843 / 0581843 and should be matched by wiring colour, stator output and engine model before fitting.

  

⚙️ Key Features

  

• Genuine OMC / Johnson Evinrude voltage regulator

• Correct OEM part number 0511404

• Also listed as 511404

• 3-wire regulator style used on older OMC charging systems

• Match by original regulator number, wire colours and charging diagram

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 0511404 OMC voltage regulator reference

• 511404 short-form OMC voltage regulator reference

• 0581843 related OMC regulator reference

• 581843 short-form related regulator reference

• 0173640 related replacement-data regulator reference

  

OEM / Related Numbers:

  

• 0511404

• 511404

• 0581843

• 581843

• 0173640

• 173640

• Voltage regulator

• 3-wire regulator

• OMC regulator

• Johnson regulator

• Evinrude regulator

  

Aftermarket / Verified Equivalents:

  

• Aftermarket replacement for 0511404 / 511404 / 0581843 / 581843

• 3-wire Johnson / Evinrude 85HP-235HP regulator replacement family

  

🚤 Compatibility

  

Commonly used on:

  

• Older Johnson / Evinrude V4 and V6 outboard charging systems

  

Typically suits:

  

• Engine models:

• Johnson / Evinrude 85HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 88HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 90HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 100HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 115HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 140HP V4 charging systems where 0511404 is specified

• Johnson / Evinrude 150HP V6 charging systems where 0511404 / 0581843 is specified

• Johnson / Evinrude 175HP V6 charging systems where 0511404 / 0581843 is specified

• Johnson / Evinrude 200HP V6 charging systems where 0511404 / 0581843 is specified

• Johnson / Evinrude 235HP V6 charging systems where 0511404 / 0581843 is specified

  

• HP Range: commonly 85HP - 235HP in 3-wire replacement data

• Engine Type: OMC / Johnson / Evinrude two-stroke outboard charging system

• Year Range: commonly late-1970s to early-1980s replacement-data range; final fitment is model-number controlled

• Serial Note: Match by exact Johnson / Evinrude model number, stator output, 3-wire regulator layout, wire colours and original regulator number before installation.

  

🔌 Function

  

The voltage regulator controls charging voltage from the stator to prevent battery overcharge and support stable electrical-system operation.

  

Common signs of failure:

  

• Battery not charging

• Battery overcharging

• Dim or erratic electrical output

• Melted regulator wiring

• Charging voltage outside specification

• Tachometer issues on systems using charging signal

• Regulator runs excessively hot

• Charging output returns when a known-good regulator is fitted

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 25.0 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 | 25.00 AUD | In stock |

## Images

- 0511404 OMC Regulator | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/0511404-omc-regulator-genuine-used-part)
> Updated: 2026-07-18