Partuto Trim Tab Anode for Yamaha 200–350 HP Outboards, Size 6CE-45373-00, Zinc Sacrificial

If you run a Yamaha F200, F225, F250, F300 or F350 outboard, this Partuto trim tab anode replaces the factory unit to provide corrosion protection and help maintain the boat's running attitude. Manufactured from high-purity zinc alloy, the anode is designed to sacrifice itself preferentially, shielding more valuable metal parts of your lower unit and trim tab assembly in saltwater and brackish environments.

How does this anode protect my Yamaha outboard?

The Partuto anode prevents electrochemical damage by corroding first, redirecting galvanic currents away from the outboard's aluminum and steel components. It’s a passive, maintenance-based defense that’s relied on across marine applications.

• Sacrificial zinc composition attracts galvanic activity away from engine metals.
• Full-contact mounting ensures the anode conducts current correctly.
• Specifically shaped to match the OEM trim tab surface for consistent protection.

Will this fit my engine and how do I install it?

This part carries OEM number 6CE-45373-00 and fits Yamaha outboards F200, F225, F250, F300, and F350. Installation is straightforward if you follow safety and contact guidelines.

• Confirm fit: check your engine model and the OE number before ordering.
• Turn off and secure the engine; work on a stable, well-lit surface.
• Align holes, tighten fasteners, and ensure bare-zinc contact with the motor—do not paint over the anode.

What performance benefits should I expect from replacing the trim tab anode?

Replacing a worn anode reduces the rate of underlying component corrosion and helps the trim tab continue to influence boat attitude. Timely replacement can lower long-term repair costs and preserve fuel efficiency tied to proper trim.

• Limits pitting and deterioration of the trim tab and adjacent metal parts.
• Helps maintain designed trim angles for efficient planing and steering response.
• Reduces risk of expensive lower-unit or steering component damage over time.

How long will the Partuto zinc anode last and when should it be replaced?

Service life varies with water type, usage, and electrical systems aboard; saltwater and stray current exposure shorten lifespan. Inspect the anode seasonally and replace when more than 50% consumed or showing severe pitting.

• High-salinity environments corrode zinc faster—check more often in saltwater.
• Replace at first signs of heavy material loss, cracks, or uneven wear.
• Keeping the anode free of paint and ensuring tight metal contact preserves effectiveness.

Who is this for: boat owners and marine technicians using Yamaha outboards from 200 to 350 HP who want a cost-effective way to protect lower-unit and trim-tab metalwork. Ideal for saltwater and brackish-water operators, DIY maintainers, and service shops that need a reliable, OEM-fit sacrificial anode to prevent galvanic damage and sustain trim performance.