6K1-45371-02 Zinc Trim Tab Anode for Yamaha 150HP 175HP 200HP 225HP | JLM Marine

Zinc Trim Tab Anode – Fits Yamaha 150 HP, 175 HP, 200 HP, 225 HP Outboards (1986-Up)

This zinc trim tab anode is engineered to provide reliable corrosion protection for Yamaha outboard engines rated at 150 HP, 175 HP, 200 HP, and 225 HP. Designed to fit 1986 and newer models, including 4-stroke configurations, this anode safeguards critical trim components from galvanic corrosion in saltwater and freshwater environments.

Directly replaces OEM part numbers 6K1-45371-02-00, 6K1-45371-01-00, and aftermarket equivalent 18-6121, ensuring broad compatibility across multiple Yamaha outboard series and years.

• Material: Zinc alloy optimized for saltwater corrosion protection
• Includes one complete trim tab anode ready for installation
• Compatible with counter-rotation models from 1992 onward

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

• 1x Zinc Trim Tab Anode

Installation Guide

1. Disconnect the battery and ensure the engine is completely off before beginning work.
2. Locate the existing trim tab anode on the lower unit of your outboard. It is typically mounted near the cavitation plate.
3. Remove the old anode by unscrewing the mounting hardware (typically one or two bolts). Inspect the mounting surface for corrosion or debris.
4. Clean the mounting area thoroughly with a wire brush to ensure a clean metal-to-metal contact for optimal electrical continuity.
5. Position the new zinc trim tab anode over the mounting holes, ensuring proper alignment.
6. Insert and hand-tighten the mounting bolts, then torque to the manufacturer's specification (typically 8–12 ft-lbs). Do not overtighten to avoid thread damage.
7. Apply a thin layer of marine-grade anti-seize compound to the threads if operating in saltwater to prevent galvanic welding.
8. Verify that the anode sits flush against the mounting surface with no gaps.
9. Reconnect the battery and perform a visual inspection to confirm secure installation.
10. Inspect the anode regularly (every 30–60 days in saltwater) and replace when worn to 50% of original thickness.

Troubleshooting & FAQ

Q: How do I confirm this trim tab anode fits my Yamaha outboard?
A: Cross-reference your engine's rated horsepower (150, 175, 200, or 225 HP) and year (1986 or newer) with the compatibility table above. Verify your OEM part number matches 6K1-45371-02, 6K1-45371-02-00, 6K1-45371-01-00, or 18-6121.

Q: How often should I replace this zinc anode?
A: In saltwater, inspect the anode every 30–60 days and replace it when it has eroded to 50% of its original size. In freshwater, anodes typically last longer but should still be checked seasonally.

Q: What are the signs that my trim tab anode needs replacement?
A: Visible corrosion or pitting on the trim components, anode erosion exceeding 50%, discoloration or flaking of the anode material, or loss of electrical continuity between the anode and lower unit.

Q: Can I use this zinc anode in freshwater?
A: While zinc anodes work in freshwater, they are optimized for saltwater environments. For exclusive freshwater use, aluminum or magnesium anodes may offer better performance, though zinc remains acceptable.

Q: Will this anode fit counter-rotation Yamaha models?
A: Yes, this anode is confirmed compatible with Yamaha counter-rotation models from 1992 onward in the 150–225 HP range.

Q: Is this an OEM part or an aftermarket replacement?
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.