6H2-81960-10-00 Rectifier Regulator for Yamaha C40 40V 40Y 50G 50H P60 C60 60F 70B C70 | JLM Marine

Rectifier Regulator for Yamaha C40 40V 40Y 50G 50H P60 C60 60F 70B C70 | JLM Marine

This rectifier regulator is engineered to fit a wide range of Yamaha outboard motors from 40 HP to 70 HP, covering models including C40, 40V, 40Y, 50G, 50H, P60, C60, 60F, 70B, and C70. It serves as a direct replacement for OEM part number 6H2-81960-10-00, ensuring reliable voltage regulation and charging performance for your Yamaha engine.

Designed as a plug-and-play solution, this regulator rectifier requires no assembly and installs directly in place of your original unit. Built with higher-grade electrical components and an improved heat sink, it delivers enhanced charging capabilities and durability that meet or exceed OEM standards. Every unit is tested prior to shipment to guarantee quality and performance.

• Direct replacement for Yamaha OEM 6H2-81960-10-00
• Plug-and-play installation with no assembly required
• Enhanced heat dissipation and charging performance

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

Your package includes:

• 1× Regulator Rectifier

Installation Guide

1. Disconnect the battery by removing the negative terminal first to ensure safety during installation.
2. Locate the original rectifier regulator on your Yamaha outboard engine, typically mounted near the powerhead or electrical components.
3. Disconnect the electrical connectors from the old regulator by carefully unplugging each wire harness.
4. Remove the mounting bolts or screws securing the old rectifier regulator to the engine bracket.
5. Clean the mounting surface to ensure proper heat dissipation and a secure fit for the new unit.
6. Position the new rectifier regulator onto the mounting bracket, aligning the screw holes.
7. Secure the unit with the original mounting bolts or screws, tightening them evenly to manufacturer specifications.
8. Reconnect all electrical connectors to the new regulator, ensuring each plug is fully seated and locked in place.
9. Apply a small amount of dielectric grease to connector terminals to prevent corrosion.
10. Reconnect the battery, starting with the positive terminal followed by the negative.
11. Start the engine and verify that the charging system is functioning correctly by checking voltage output with a multimeter (typically 13.5–14.5V at running RPM).
12. Inspect all connections for security and ensure there are no loose wires or abnormal heat buildup during initial operation.

Troubleshooting & FAQ

How do I confirm this rectifier regulator fits my Yamaha engine?
Check the Compatible Engine Models table above to verify your engine model, horsepower, and year range. It is critical to confirm your outboard's model and serial number against the fitment list before purchasing. You can also cross-reference the OEM part number 6H2-81960-10-00 with your engine's parts diagram.

What are the signs that my rectifier regulator is failing?
Common symptoms include battery not charging, fluctuating voltage output, dim lights at idle, or a dead battery after running the engine. You may also notice the battery overheating or the voltage exceeding 15V, which can damage electrical components.

How often should I replace the rectifier regulator?
Rectifier regulators typically last several years under normal operating conditions. Replace the unit if you experience charging issues, voltage irregularities, or visible signs of damage such as burnt connectors or a cracked heat sink. Regular electrical system inspections during annual maintenance are recommended.

Can I install this myself, or do I need a professional?
This is a plug-and-play replacement requiring basic mechanical skills and tools. If you are comfortable disconnecting the battery and handling electrical connectors, you can complete the installation yourself. However, if you are unfamiliar with marine electrical systems, professional installation is recommended to ensure safety and proper function.

What is the difference between this aftermarket regulator and the OEM part?
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.