Mercury – Zinc Anode | Corrosion Protection Component | Marine-Grade Zinc | 47820A1

Overview

Salt and water can be tough on an outboard, but corrosion doesn’t stand a chance when your anodes are doing their job. The Mercury Marine 47820A1 Zinc Anode protects your Mercury 200HP carbureted TwoStroke outboard by sacrificing itself to corrosion before it reaches your prop, gearcase, or other vital metal components. Made from high-quality zinc and built to Mercury’s factory specs, this OEM anode kit includes everything you need — the anode, washer, and screw — for a quick, clean replacement.

Key Features

• Purpose: Shields underwater metal components from galvanic corrosion.
• Material: Made from marine-grade zinc for proven corrosion protection.
• Design: Precision-cast to Mercury’s original specifications for a perfect fit.
• Performance: Ensures long-lasting protection in both fresh and saltwater.
• Installation: Comes complete with anode, washer, and screw for easy replacement.

Engine & Boat Compatibility

• Mercury 200HP carbureted TwoStroke outboards

Performance & Real-World Benefits

The 47820A1 zinc anode protects your lower unit, propeller, and mounting hardware from corrosion caused by dissimilar metals and electrolytic current in the water. It’s designed to corrode gradually, diverting the electrochemical reaction away from more valuable parts of your outboard.

This small but critical piece keeps your engine’s metal surfaces clean and strong, extending the life of your drive components. Regular inspection and replacement ensure continuous protection and trouble-free operation, whether you’re boating in fresh or saltwater.

Why Choose Mercury OEM

The Mercury 47820A1 is a genuine factory part, cast from the right zinc alloy to provide balanced corrosion control for your Mercury outboard. Cheaper aftermarket anodes often use impure metal mixtures that corrode unevenly or fail prematurely.

Mercury’s OEM design guarantees precise fit, proper grounding, and reliable protection. It’s the same level of quality used on new engines, ensuring your 200HP outboard stays protected from the elements for seasons to come.

FAQ

Q1: What engines does this anode fit?
It fits Mercury 200HP carbureted TwoStroke outboards.

Q2: What’s included?
The kit includes the zinc anode, washer, and mounting screw for quick replacement.

Q3: Can it be used in saltwater?
Yes — zinc anodes perform best in saltwater or brackish water and can also be used in freshwater.

Q4: How does it protect my outboard?
It acts as a sacrificial metal, corroding in place of your prop, gearcase, and other underwater parts.

Q5: Why use Mercury OEM instead of aftermarket?
Mercury’s OEM anodes are made from the correct alloy and sized for exact fit, ensuring full and even protection.