6G5-81960-A0 Voltage Regulator Rectifier for Yamaha | JLM Marine

Voltage Regulator Rectifier – Fits Yamaha 2-Stroke 75–225 HP Outboards (1986–1999)

This aftermarket voltage regulator rectifier is engineered to replace Yamaha OEM part number 6G5-81960-A0 and fits a wide range of Yamaha 2-stroke outboard motors from 75 HP to 225 HP, covering model years 1986 through 1999. It provides reliable voltage regulation and current rectification to protect your engine's electrical system and ensure consistent charging performance.

This unit directly replaces multiple OEM and aftermarket part numbers, including 6G5-81960-00, Arrowhead 230-58237, and J&N 230-58237, offering broad compatibility across Yamaha's V6 and inline outboard series from the late 1980s through the 1990s.

• Precision-manufactured aftermarket replacement for Yamaha rectifier & regulator assemblies
• Designed for 2-stroke Yamaha outboards ranging from 75 HP to 225 HP
• Includes all mounting hardware and connectors for direct installation

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

The package contains all the parts shown in the picture.

• 1 × Voltage Regulator Rectifier (6G5-81960-A0)

Installation Guide

1. Disconnect the battery negative terminal to prevent electrical shorts during installation.
2. Locate the existing voltage regulator rectifier on your outboard motor, typically mounted near the engine block or electrical junction.
3. Disconnect all electrical connectors from the old regulator, noting their positions or taking a photo for reference.
4. Remove the mounting bolts or screws securing the old unit to the engine.
5. Clean the mounting surface to ensure good thermal contact and proper grounding.
6. Position the new voltage regulator rectifier in place, aligning the mounting holes with the engine bracket.
7. Secure the unit using the appropriate mounting hardware (bolts/screws) and torque to manufacturer specifications.
8. Reconnect all electrical connectors to the new regulator, ensuring each terminal matches the original configuration.
9. Double-check all connections for tightness and proper seating to avoid voltage drops or intermittent operation.
10. Reconnect the battery negative terminal.
11. Start the engine and verify proper charging voltage using a multimeter (typically 13.5–14.5V at idle).
12. Inspect the installation for any unusual heat buildup or loose connections after the first few hours of operation.

Troubleshooting & FAQ

How do I confirm this regulator fits my Yamaha outboard?
Cross-reference your engine's model and year with the compatibility table above, then verify the OEM part number (6G5-81960-A0 or 6G5-81960-00) stamped on your existing unit or listed in your service manual.

What are the signs that my voltage regulator rectifier is failing?
Common symptoms include a dead or overcharged battery, dimming lights at idle, erratic gauge readings, or the battery warning light illuminating. Use a multimeter to check charging voltage; readings below 13V or above 15V indicate regulator failure.

How often should I replace the voltage regulator rectifier?
There is no fixed replacement interval; replace the unit when you observe charging system failures or electrical symptoms. Regular inspection of connectors and mounting integrity can prevent premature failures caused by corrosion or poor grounding.

Can I install this regulator myself, or do I need a marine technician?
Installation is straightforward for anyone with basic electrical and mechanical skills. However, if you are unfamiliar with outboard electrical systems or unsure about connector identification, professional installation is recommended to avoid electrical damage.

Will this aftermarket regulator perform the same as the original Yamaha OEM part?
This aftermarket unit is manufactured to OEM specifications and dimensions, ensuring comparable voltage regulation and current handling. It is designed to meet or exceed the performance of the original Yamaha part under normal operating conditions.

Is this an OEM part or an aftermarket replacement?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.