Mercury – Quicksilver Magnesium Anode Assembly | Corrosion Protection | 35–300HP Outboards & MerCruiser Drives | 76214A6

Overview

If you boat primarily in freshwater, magnesium anodes offer the best protection money can buy. The Mercury Marine 76214A6 Quicksilver Magnesium Anode Assembly protects your Mercury and Mariner 35–300HP outboards, as well as MerCruiser Alpha One Gen II and Bravo I, II, and III sterndrives, from corrosion. It’s also compatible with Force 90 and 120HP outboards (1995 and newer). Made from premium magnesium alloy, this OEM anode acts as the first line of defense against electrolysis, protecting your lower unit and other critical metal parts from deterioration.

Key Features

• Purpose: Guards against galvanic corrosion in freshwater environments.
• Material: Cast from high-purity magnesium alloy for superior sacrificial protection.
• Design: Includes anode and mounting fastener for easy replacement.
• Performance: Protects your lower unit and exposed metal parts from electrolysis damage.
• Durability: Provides longer-lasting, balanced protection in freshwater applications.
• Ease of Use: Simple bolt-on design installs with standard tools.

Engine & Boat Compatibility

• Mercury and Mariner 35–300HP outboards
• Force 90HP and 120HP outboards (1995 and newer)
• MerCruiser Alpha One Gen II sterndrives
• MerCruiser Bravo I, II, and III sterndrives
• Designed for freshwater use

Performance & Real-World Benefits

The 76214A6 anode assembly works by corroding in place of your drive components, protecting them from the harmful effects of galvanic corrosion. Magnesium is more active than zinc or aluminum, making it ideal for freshwater protection where conductivity is lower.

Replacing your anode regularly keeps your outboard or sterndrive looking good and running strong. A fresh anode means cleaner metal surfaces, less pitting, and a longer lifespan for your entire propulsion system — all for a few minutes of maintenance.

Why Choose Mercury OEM

The Quicksilver 76214A6 is a genuine Mercury Marine part, made from high-quality magnesium tested to exacting standards. Aftermarket anodes may use mixed metals or improper alloy ratios that corrode unevenly or too slowly, leaving key components exposed.

Mercury’s OEM anodes are precisely engineered to provide balanced protection, preventing both under- and over-protection that can harm paint and seals. With Mercury, you get proven materials, perfect fit, and dependable performance straight from the factory.

FAQ

Q1: What engines does this anode assembly fit?
It fits Mercury and Mariner 35–300HP outboards, Force 90/120HP (1995 and newer), and MerCruiser Alpha/Bravo sterndrives.

Q2: What’s included?
The magnesium anode and the mounting fastener.

Q3: Can I use it in saltwater?
No — magnesium is designed specifically for freshwater. Use aluminum or zinc anodes in brackish or saltwater.

Q4: How often should I replace it?
Inspect every few months and replace it when 50% worn or heavily pitted.

Q5: Why OEM over aftermarket?
Mercury’s magnesium alloy offers precise, balanced protection and is tested for marine-grade performance — no guessing, just proven reliability.