Mercury – Quicksilver Zinc Anode Plate | Corrosion Protection Component | Cast Zinc | 34762A1

Overview

Galvanic corrosion is one of the toughest enemies your sterndrive faces, and the Mercury Marine 34762A1 Quicksilver Zinc Anode Plate provides a strong defense. Designed for MerCruiser TR and TRS drives, this 2.5" x 2.5" plate is built from high-purity zinc to protect critical metal components by corroding first — saving your drive from damage. It’s a simple, affordable layer of protection that installs easily and works continuously, season after season, in both freshwater and saltwater.

Key Features

• Purpose: Shields your MerCruiser TR or TRS drive from galvanic corrosion.
• Material: Made from solid marine-grade zinc, proven for saltwater protection.
• Size: Measures 2.5" x 2.5", built to fit OEM mounting locations.
• Performance: Corrodes sacrificially to protect the drive’s aluminum and stainless-steel parts.
• Maintenance: Inspect regularly and replace when pitted or corroded for continuous protection.
• Compatibility: Fits MerCruiser TR and TRS sterndrives.

Engine & Boat Compatibility

• Fits MerCruiser TR and TRS sterndrive systems.
• Commonly used on larger sport boats, cruisers, and offshore vessels running MerCruiser power.
• Works in freshwater and saltwater conditions.
• Installs easily using standard hardware and tools.

Performance & Practical Benefits

The 34762A1 zinc anode plate acts as your sterndrive’s first line of defense against corrosion. It works by attracting electrical current that would otherwise damage your gearcase and propeller shaft components. As it slowly wears away, it sacrifices itself to keep your drive’s more valuable parts intact.

Zinc remains the best choice for saltwater protection, and this plate is precision-cast for even corrosion and long-lasting performance. Regular inspection and timely replacement will ensure your system stays protected year-round, helping to prevent costly repairs caused by electrolysis.

Why Buy OEM

Not all anodes perform the same. The Quicksilver 34762A1 is a genuine Mercury Marine part, made from the correct zinc alloy for predictable wear and dependable protection. Cheaper aftermarket anodes may use mixed metals that corrode unevenly or provide inconsistent coverage.

With OEM anodes, you get the assurance of proper fit, correct alloy composition, and corrosion performance verified by Mercury’s engineering tests. It’s simple — install the right part once, and protect your sterndrive for the long haul.

FAQ

Q1: Which drives does this anode fit?
It fits MerCruiser TR and TRS sterndrives.

Q2: What’s the size?
The plate measures 2.5 inches by 2.5 inches.

Q3: Can it be used in saltwater?
Yes. Zinc anodes are ideal for saltwater or brackish environments.

Q4: How often should it be replaced?
Inspect it several times a season and replace it when 50% or more of the anode has corroded.

Q5: Why use OEM instead of aftermarket?
OEM ensures the correct metal purity, fit, and corrosion rate for lasting, effective protection.