Maximize Your Outboard’s Power Output

Modern boats rely heavily on electronics, and your outboard’s charging system needs to keep up. The Mercury V6/V8 CMS Alternator Upgrade Kit delivers dependable, high-output performance for today’s demanding marine applications.

High-Output Performance You Can Rely On

Designed by Mercury Marine, this upgrade increases your alternator’s output from 85 amps to 115 amps.
As a result, you get more power for your onboard systems—without sacrificing efficiency or engine performance.

Whether you’re powering electronics, charging multiple batteries, or running essential systems, this kit delivers consistent and reliable energy.

Perfect for High-Demand Marine Electronics

Modern marine equipment draws more power than ever before. Touchscreen GPS units, sonar systems, and VHF radios are just the beginning.

Fortunately, this alternator upgrade handles the extra load with ease.
Additionally, it helps reduce the risk of voltage drops, battery drain, or electrical overload—especially during long trips or tournaments.

Engineered for Harsh Marine Conditions

The marine environment is tough, but this kit is tougher. Built using corrosion-resistant materials, the system is designed to withstand saltwater, moisture, and vibration.

Furthermore, every component is tested to meet Mercury’s strict durability standards.
You can trust it to perform in the most demanding conditions—trip after trip.

Fast, Simple, and Secure Installation

Time on the water matters. That’s why this upgrade is designed with a factory-fit layout for quick, hassle-free installation.

All required heavy-duty components are included, and no complicated modifications are necessary.
As a result, you can get back on the water with minimal downtime.

Tailored for Mercury V6 and V8 CMS Models

This kit is specifically built for outboards with a Conventional Mid Section (CMS). That ensures maximum compatibility and peak performance.

Whether you’re a professional guide or weekend boater, you’ll benefit from an upgrade that’s made to fit your engine perfectly.

Power More Accessories Without Overload

Adding new accessories—such as livewell pumps, deck lights, or audio systems—can quickly strain a stock alternator.

However, with the increased 115-amp output, your upgraded system can handle more devices at once.
In turn, this reduces battery stress and increases the lifespan of your electrical system.

Backed by Mercury Marine Quality

Mercury Marine has decades of experience designing advanced marine systems.
This alternator upgrade reflects that same engineering expertise and attention to detail.

It’s more than just an upgrade—it’s an investment in long-term reliability and performance.

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