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