688-45371-02 Trim Tab Anode for Yamaha F50 T50 60 70 C75 E75 P75 C85 90 C90 | JLM Marine

688-45371-02 Trim Tab Anode for Yamaha F50 T50 60 70 C75 E75 P75 C85 90 C90

This zink trim tab anode is engineered to protect Yamaha outboard engines from galvanic corrosion. Designed for reliable performance across a wide range of Yamaha 2-stroke and 4-stroke models from 50 HP to 90 HP, this anode ensures your lower unit remains protected in saltwater and freshwater environments.

This aftermarket replacement directly replaces Yamaha OEM part numbers 688-45371-02-00, 67F-45371-00-00, 688-45371-01-00, 6K5-45251-00-00, and 6K5-45371-00-00, as well as Technoseal TEN01104. It provides an exact fit and reliable corrosion protection for compatible Yamaha engines manufactured between 1984 and 2004.

• Includes mounting bolt for complete installation
• zink construction for effective galvanic protection
• Direct bolt-on replacement—no modification required

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 × Zink Trim Tab Anode
• 1 × Mounting Bolt

Installation Guide

1. Tilt or raise the outboard motor to access the trim tab area on the lower unit. Ensure the engine is off and the key is removed.
2. Locate the existing trim tab anode on the lower unit's anti-cavitation plate. Inspect for corrosion or wear.
3. Using a socket or wrench, remove the old anode by loosening and extracting the mounting bolt. Clean the mounting surface thoroughly.
4. Position the new zink trim tab anode onto the mounting location, aligning the hole with the threaded insert.
5. Insert the new mounting bolt through the anode and hand-tighten initially. Ensure proper alignment before final tightening.
6. Torque the bolt to the manufacturer's specification (typically 60-84 in-lbs) to secure the anode without stripping threads.
7. Inspect the installation to confirm the anode is flush and properly seated. Lower the motor back to its normal position.
8. Regularly inspect the anode every 3-6 months or per your maintenance schedule, replacing when 50% eroded.

Troubleshooting & FAQ

Q: How do I know if this trim tab anode fits my Yamaha outboard?
A: Check the Compatible Engine Models table above for your engine's model, HP rating, and year. You can also cross-reference your existing OEM part number against the Part Number Cross-Reference table to confirm fitment.

Q: How often should I replace the trim tab anode?
A: Inspect your anode every 3-6 months, especially if you operate in saltwater. Replace the anode when it has eroded by 50% or more to ensure continued corrosion protection for your lower unit.

Q: What are the signs that my trim tab anode needs replacement?
A: Visible erosion, pitting, or the anode appearing significantly thinner than when new are clear indicators. If you notice increased corrosion on other metal parts of your lower unit, the anode may no longer be providing adequate protection.

Q: Can I use this anode in both saltwater and freshwater?
A: Yes, this zink trim tab anode is suitable for both saltwater and freshwater applications. Saltwater environments will cause faster anode erosion, so inspect more frequently if you boat in the ocean or brackish water.

Q: What's the difference between this aftermarket anode and the Yamaha OEM version?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.