Mercury – Quicksilver 821630A2 Magnesium Anode Assembly | MerCruiser Bravo, X, XR & XZ Drives | Freshwater Use | 821630A2

Overview

Freshwater boating brings its own kind of corrosion, and magnesium is your best defense against it. The Quicksilver 821630A2 Magnesium Anode Assembly protects your MerCruiser Bravo, X, XR, and XZ drives from galvanic corrosion — the kind of hidden damage that can quietly eat away at your sterndrive’s metal components.

Made from high-purity magnesium, this OEM anode is engineered for long-lasting, even wear and superior protection in freshwater. It installs easily with the included mounting hardware, giving you peace of mind and lasting protection for your drive.

Key Features

• Purpose: Prevents galvanic corrosion by acting as a sacrificial metal in freshwater environments.
• Fitment: For MerCruiser Bravo One, Bravo Two, Bravo Three, and X, XR, XZ drives.
• Material: Made from magnesium, the most effective anode material for freshwater.
• Kit Contents: Includes magnesium anode and mounting hardware.
• Ease of Install: Simple bolt-on design — quick replacement with basic tools.

Engine & Boat Compatibility

• Compatible with MerCruiser Bravo One, Two, Three, and X, XR, XZ drives
• Designed for boats operated primarily in freshwater — lakes, rivers, and reservoirs

Performance & Practical Benefits

The 821630A2 anode assembly acts as the first line of defense against corrosion. In freshwater, magnesium outperforms zinc or aluminum, offering stronger protection and more consistent wear. This anode sacrifices itself over time to keep your Bravo drive’s metal parts clean and intact.

Installation takes just minutes — unbolt the old anode, attach the new one with the included hardware, and you’re back on the water with factory-grade protection. It’s a simple bit of maintenance that prevents major damage later.

Why Buy OEM

Mercury’s OEM anodes are made from carefully balanced magnesium alloys that meet strict quality and protection standards. Generic replacements can contain impurities or improper mixes that corrode unevenly, leaving parts unprotected.

A genuine Quicksilver anode guarantees even wear, proper fit, and reliable corrosion protection — exactly what Mercury intended for your drive.

FAQ

Q1: What drives fit the Quicksilver 821630A2 anode assembly?
A: It fits MerCruiser Bravo One, Two, Three, X, XR, and XZ drives.

Q2: Is it for saltwater or freshwater?
A: This magnesium anode is designed for freshwater use only.

Q3: What’s included?
A: The kit includes the magnesium anode and mounting hardware.

Q4: How often should I replace it?
A: Inspect every few months and replace when the anode is about half worn.

Q5: Why OEM over aftermarket?
A: OEM magnesium anodes have the correct alloy composition for consistent, reliable corrosion protection.