Aluminum Anode Kit – Fits Mercury/MerCruiser Alpha One Generation 2 (Replaces 888756Q01, 888756Q03)
Aluminum Anode Kit – Fits Mercury/MerCruiser Alpha One Generation 2 (Replaces 888756Q01, 888756Q03) 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 Mercury/MerCruiser Alpha One Generation 2...
Product Details
This Aluminum Anode Kit – Fits Mercury/MerCruiser Alpha One Generation 2 provides comprehensive protection against galvanic corrosion for sterndrive units from 1991 to the present. Made from US Military Grade aluminum alloy, it is specifically designed to safeguard key underwater components in salt, brackish, and fresh water environments.
This kit serves as a direct replacement for Mercury/MerCruiser part numbers 888756Q01 and 888756Q03, as well as Martyr CM888756KITA, Tecnoseal 20820AL, and GLM 12722.
- Engineered for use in salt, brackish, and fresh water.
- Simple bolt-on installation with included hardware.
- Provides comprehensive protection for trim cylinders, drive housing, and other key components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 888756Q01 |
| Mercury/MerCruiser | 888756Q03 |
| Martyr | CM888756KITA |
| Tecnoseal | 20820AL |
| GLM | 12722 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is designed for MerCruiser Alpha One Generation 2 sterndrives.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | Alpha One Generation 2 | Various | 4-Stroke | 1991–Present | 888756Q01/888756Q03 | Fits all Alpha One Gen 2 sterndrives |
Technical Specs
- Product Type
- Sacrificial Anode Kit
- Installation
- Bolt-on
- Connection
- Direct bolt-on with included hardware
- Housing Material
- Aluminum Alloy (US Military Grade)
- Housing Color
- Silver/Gray
- Dimensions
- 27.0 x 20.5 x 2.0 cm (10.6 x 8.1 x 0.8 in)
- Weight
- ~1.04 kg (2.29 lb)
- Fitting Type
- Bolt-on
- Thread Size
- Various (included in kit)
- Operating Temperature
- -30°C to 80°C (-22°F to 176°F)
- Warranty
- Manufacturer dependent
- Application
- Designed for salt, brackish, and fresh water applications
What’s in the Box
- 1 x Complete Anode Kit (replaces 888756Q01/888756Q03)
- All necessary mounting hardware
Installation Notes
- Disconnect the battery or main power supply to the engine before starting work.
- Access the old anodes on the sterndrive unit. Their locations may vary, but typically include the gearcase and trim cylinder areas.
- Unscrew and remove the old, depleted anodes and their mounting hardware.
- Thoroughly clean the mounting surfaces on the sterndrive. Use sandpaper or a wire brush to remove any paint, corrosion, or buildup to ensure a clean, metal-to-metal connection.
- Position the new anodes from the kit onto the cleaned surfaces.
- Fasten the new anodes securely with the included hardware. Do not overtighten.
- Ensure each anode is in firm electrical contact with the drive unit. Proper contact is critical for galvanic protection.
Troubleshooting & FAQ
When should I replace these anodes?
Anodes should be inspected regularly and replaced when they are approximately 50% corroded or depleted. For boats in active use, check them at least once or twice during the season.
What water conditions is this aluminum kit for?
This aluminum anode kit is ideal for saltwater and brackish water, where it offers superior protection compared to zinc. It is also effective for use in fresh water, making it a versatile all-in-one solution.
How do I ensure the anodes work correctly?
Proper function depends on good electrical contact. The mounting surface on the sterndrive must be clean and free of paint or heavy corrosion. Lightly sanding the contact point before installation is recommended.
What is the difference between aluminum and zinc anodes?
Aluminum anodes have a higher negative voltage than zinc, which allows them to provide better protection in brackish and less-saline saltwater. They also perform better than zinc in fresh water. Zinc anodes are generally only recommended for saltwater applications and can form a passive coating in fresh water, rendering them ineffective.
How do I confirm this kit fits my engine?
This kit fits all Mercury/MerCruiser Alpha One Generation 2 sterndrives from 1991 to present. Please consult the Engine & Model Compatibility table on this page to verify your application.
What are the signs of a failing anode?
A failing or depleted anode will no longer protect your sterndrive, leading to rapid corrosion (pitting) on other metal components like the propeller, gearcase, and trim rams. If you see advanced corrosion on the drive unit, your anodes are likely depleted or were not making proper contact.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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