RisWhiteMeteors Trim Tab Zinc Anode for Yamaha Outboard 61A-45371-00-00 (20–300HP) Marine-Grade Corrosion Protection

RisWhiteMeteors 61A-45371-00-00 is a direct-fit trim tab zinc anode designed to replace worn sacrificial zincs on Yamaha outboards from 20 to 300HP.

Corrosion eats away at exposed metal in saltwater and brackish environments; this aftermarket trim tab zinc provides a straightforward, reliable sacrificial layer that protects the trim tab and nearby hardware on many Yamaha outboard models. The part is made to the same form and mounting footprint as the original so installation is quick and reduces the risk of galvanic damage to the trim tab, steering bracket or lower unit components.

Which Yamaha outboards will this trim tab zinc fit?

This trim tab zinc is listed for a broad horsepower range—20 through 300HP—and covers multiple Yamaha models within that span. Verify your engine part reference (61A-45371-00-00) against your service manual or the zinc currently on your boat to be certain of compatibility.

• Direct replacement for Yamaha engines that specify part number 61A-45371-00-00.
• Fits many models across the 20–300HP families (check engine year and serial for exact fit).
• Designed to match original mounting holes and trim tab geometry for correct alignment.

How does this anode protect my outboard and what does it protect specifically?

As a sacrificial anode, the zinc corrodes preferentially to nearby metals, reducing galvanic corrosion risk on the trim tab, bolts and adjacent fittings. Properly installed, it helps preserve the structural metal parts that are expensive and inconvenient to replace.

• Protects trim tab plate and fasteners by sacrificing zinc instead of steel or aluminum.
• Shields lower unit attachments and steering hardware located near the tab.
• Helps prevent pitting and structural weakening of exposed trim tab surfaces.

What are the material and durability characteristics of this replacement zinc?

The anode is manufactured from marine-grade zinc formulated for seawater use and shaped to withstand the turbulence and abrasion common behind an outboard motor. It delivers predictable, controlled corrosion so you can replace it on a scheduled maintenance interval instead of reacting to damage.

• Made from high-quality sacrificial zinc optimized for saltwater and brackish conditions.
• Precision cast to maintain correct profile and mounting integrity under load.
• Corrodes steadily to indicate replacement intervals without flaking or disintegrating prematurely.

How easy is installation and what should I check during replacement?

Installation is simple for anyone comfortable with basic boat maintenance: remove the old anode, clean the mounting surface for bare metal contact, and install the new unit using the original fastener. Always confirm good electrical contact between the new anode and the trim tab for the zinc to function correctly.

• Use original mounting bolt and torque to manufacturer specification to ensure contact.
• Clean corrosion or paint from the mounting surface for a metal-to-metal connection.
• Inspect surrounding hardware; replace fasteners if heavily corroded to maintain effectiveness.

Who this is for: Boat owners and marine technicians running Yamaha outboards between 20 and 300HP who want a dependable, OEM-form sacrificial zinc to protect trim tabs and nearby hardware. Ideal for seasonal maintenance or as a proactive item in a preventive care plan, this part is for anyone who prefers a correct-fit replacement that mirrors the factory part number 61A-45371-00-00.