Yamaha – Trim Tab Anode | Corrosion Protection | 69L-45371-00-00

Overview

The Yamaha 69L-45371-00-00 Trim Tab Anode serves two important functions on Yamaha outboards: helping protect the lower unit from corrosion and assisting with steering torque adjustment. Mounted on the underside of the anti-ventilation plate, the trim tab anode acts as a sacrificial metal that corrodes instead of the surrounding aluminum components.

For boaters running in saltwater or brackish environments, trim tab anodes are a critical maintenance item. Replacing worn anodes helps maintain corrosion protection while ensuring the trim tab continues to help balance steering torque at higher speeds.

Key Features

• Dual-Purpose Design – Functions as both a sacrificial anode and a trim tab to help counter steering torque.

• Lower Unit Corrosion Protection – Protects critical aluminum components from galvanic corrosion.

• OEM Yamaha Fitment – Built to Yamaha specifications for proper mounting and alignment.

• Marine-Grade Alloy Construction – Designed to gradually corrode to protect the surrounding engine components.

Engine & Boat Compatibility

• VZ200 / VZ225 / VZ250 / VZ300 - 2003-2009
• Z250 / Z300 - 2003-2006
• LZ250 / LZ300 - 2003-2006
• VX200 / VX225 / VX250 - 2002-2005
• F225 - 2007-2009

Why is this prop a strong choice vs. alternatives?

• Combined Anode and Trim Tab Function – Provides corrosion protection while also helping balance steering torque.

• OEM Precision Fit – Designed specifically for Yamaha high-horsepower outboard gearcases.

• Protects Expensive Lower Unit Components – Helps prevent galvanic corrosion damage to aluminum housings.

• Simple Maintenance Replacement – Easy to inspect and replace as part of routine outboard service.

FAQ

Q: What does a trim tab anode do on an outboard motor?
A: It protects the lower unit from corrosion while also helping counter steering torque at higher speeds.

Q: How often should a trim tab anode be replaced?
A: It should be inspected regularly and replaced once about half of the material has corroded away.

Q: Can I adjust the trim tab position?
A: Yes. Slight adjustments can help balance steering torque if the boat pulls to one side while running.

Q: Does saltwater use affect anode wear?
A: Yes. Saltwater accelerates corrosion, so anodes may require more frequent inspection and replacement.

Q: What happens if the trim tab anode is completely worn away?
A: Without it, corrosion can begin damaging the lower unit and other aluminum components.