Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboard 35+ HP & MerCruiser Stern Drives (Replaces 822777Q1, 822777A1)

Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboard 35+ HP & MerCruiser Stern Drives

This aluminum trim tab anode is designed for a wide range of Mercury/Mariner outboards (35 HP and up, from 1995 and newer), Force outboards (90/120 HP, 1995 and up), and all MerCruiser Stern Drive models. It serves the dual purpose of protecting underwater metal components from galvanic corrosion and acting as a small rudder to counteract propeller-induced steering torque.

This component is a direct replacement for several OEM and aftermarket part numbers, including Mercury 822777Q1, 822777A1, 46399A2, MerCruiser 46399A1, Sierra 18-6014, and GLM 12680.

• Material: High-grade aluminum alloy for use in both fresh water and salt water.
• Installation Type: Simple bolt-on installation.
• Package Includes: 1 x Trim Tab Anode and 1 x Mounting Bolt.

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 Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Mercury/Mariner Outboards

MerCruiser Stern Drives

Technical Specifications

Package Contents

• 1 x Aluminum Trim Tab Anode (Replaces 822777Q1/822777A1)
• 1 x Mounting Bolt

Installation Guide

1. Safety First: Disconnect the boat's battery before starting any work on the engine or drive.
2. Locate the Anode: Identify the old trim tab anode, typically located on the underside of the anti-cavitation plate, just behind the propeller.
3. Remove the Old Anode: Use a socket wrench to remove the central mounting bolt holding the anode in place. The anode may be corroded, so some effort might be required.
4. Clean the Mounting Surface: Thoroughly clean the mounting area on the sterndrive or outboard. Ensure all corrosion, paint, and residue are removed to guarantee a good electrical connection.
5. Install the New Anode: Position the new trim tab anode and insert the new mounting bolt.
6. Tighten Securely: Tighten the bolt to the manufacturer's recommended torque specification. Do not overtighten, but ensure it is secure and makes firm contact with the drive housing.
7. Final Check: Once installed, verify the anode is firmly in place. Reconnect the battery.

Troubleshooting & FAQ

Q: How do I confirm this fits my engine?

A: The best way is to check your original part number against the list in our "Part Number Cross-Reference" table. Additionally, review the "Compatible Engine Models" tables to ensure your specific model and year range are listed.

Q: How often should I replace my trim tab anode?

A: Anodes should be inspected during regular maintenance, at least every few months. A common rule is to replace them when they are 50% consumed. Never paint an anode, as this will render it ineffective.

Q: What is the difference between aluminum, zinc, and magnesium anodes?

A: This aluminum anode is recommended for excellent protection in both salt and fresh water. Zinc anodes are typically for saltwater use only, while magnesium anodes are best suited for fresh water only.

Q: My old anode was a different part number. Will this still fit?

A: It's very likely. This anode is a direct replacement for multiple part numbers like Mercury 822777Q1, MerCruiser 46399A1, and Sierra 18-6014. Check the cross-reference table to be sure.

Q: OEM vs. Aftermarket?

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.