Aluminum Anode Kit – Fits Yamaha 150-200 HP Outboards (Replaces 6G5-45251-01A, 6J9-45371-01A)
Aluminum Anode Kit – Fits Yamaha 150-200 HP Outboards (Replaces 6G5-45251-01A, 6J9-45371-01A) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Aluminum Anode Kit – Fits Yamaha 150-200 HP Outboards (Replaces 6G5...
Product Details
This Aluminum Anode Kit is engineered for Yamaha 150-200 HP outboards, providing comprehensive protection for a range of models. It is fully compatible with F150 & VF150 4-stroke models (all years), F175 4-stroke models, F200LB/XB/XCA models, and 2-stroke outboards from 150 HP to 225 HP (1988 and newer).
The kit serves as a direct cross-reference for Yamaha parts 6G5-45251-01A (bracket anode) and 6J9-45371-01A (trim tab anode), along with aftermarket equivalents from Martyr, Tecnoseal, Seachoice, and Quicksilver.
- Material: US Military Grade Aluminum for superior performance in salt and brackish water.
- Installation: Mounts externally on the lower unit's bracket and trim tab.
- Package Includes: All necessary hardware is included for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6G5-45251-01A |
| Yamaha | 6J9-45371-01A |
| Martyr | CMY150KITA |
| Tecnoseal | 21101AL |
| Seachoice | 95251 |
| Quicksilver | 8m6007986 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is specifically designed for the following Yamaha outboard engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F150 | 150 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | VF150 | 150 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | F175 | 175 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | F200LB | 200 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | F200XB | 200 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | F200XCA | 200 | 4-Stroke | All Models | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | 150 HP | 150 | 2-Stroke | 1988 and Newer | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | 175 HP | 175 | 2-Stroke | 1990 and Newer | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
| Yamaha | 200 HP | 200 | 2-Stroke | 1988 and Newer | 6G5-45251-01A, 6J9-45371-01A | Bracket and trim tab anodes |
Technical Specs
- Product Type
- Aluminum Anode Kit
- Installation
- External, Lower Unit
- Material
- US Military Grade Aluminum
- Water Type
- Salt Water and Brackish Water
- Mounting Location
- Bracket and Trim Tab
- Housing Material
- Aluminum
- Housing Color
- Silver/Gray
- Product Dimensions
- 32.0" L x 23.0" W x 7.0" H
What’s in the Box
- 1 x Bracket Anode (replaces OEM 6G5-45251-01A)
- 1 x Trim Tab Anode (replaces OEM 6J9-45371-01A)
- 1 x Hardware Kit (fasteners and mounting hardware)
Installation Notes
- Disconnect the boat's battery before beginning work.
- Trim the outboard engine to the full "up" position to access the lower unit.
- Unbolt and remove the old, depleted anodes from the bracket and trim tab locations. Note the orientation of each part.
- Thoroughly clean the mounting surfaces on the engine to ensure a good electrical connection. Use a wire brush or scraper to remove any corrosion or residue.
- Position the new anodes and securely fasten them using the provided hardware. Do not overtighten.
- Never paint an anode, as this will prevent it from functioning correctly.
Troubleshooting & FAQ
How do I know if this kit fits my engine?
This kit is designed for specific Yamaha 150-200 HP outboards. Please check the "Engine & Model Compatibility" table and cross-reference your engine's model, horsepower, and year. Comparing the OEM part numbers listed to your service manual is the most reliable method.
Why use aluminum anodes instead of zinc?
Aluminum anodes are more versatile than zinc. They offer superior protection in both salt and brackish water environments. Zinc anodes are generally effective only in saltwater and can develop a passive coating in brackish or fresh water, rendering them ineffective.
How often should I inspect and replace my anodes?
Anodes should be inspected at least once a year, or every 50-100 hours of use. Replace them when they are approximately 50% consumed or appear heavily pitted and corroded. Replacement frequency depends on water salinity, electrical currents, and usage.
What are the signs of a worn-out anode?
Visible signs include significant reduction in size, deep pitting, crumbling, or a white, powdery coating. A severely depleted anode can no longer protect your engine's metal components from galvanic corrosion, which may appear as bubbling paint or pitting on the lower unit.
Is this an official OEM Yamaha part?
This listing is for an aftermarket replacement, not an original equipment manufacturer (OEM) part. It is engineered to meet or exceed OEM specifications using comparable high-grade materials and is manufactured in an ISO 9001 certified facility to ensure quality and fitment.
How fast is shipping?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout.
What is the warranty and return policy?
Our products are covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears on the compatibility list—do not order.
- This is an aftermarket replacement part, not an OEM component. All mentions of brand names and part numbers are for reference purposes only.
- Professional installation is highly recommended for safety, performance, and to prevent damage to your engine.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and batch-tested for real-world performance and durability.
- Fast Global Fulfillment — With free standard delivery to most regions, you can expect your parts in 5–15 days.
- Manufacturer-Direct Value — We offer fair, direct-from-factory pricing without compromising on materials or quality control.
Payment & Security
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