Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerCruiser Sterndrives (Replaces 822777Q1, 46399A1)

Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerCruiser Sterndrives

This aluminum trim tab anode is designed for Mercury/Mariner outboards (35HP and above, 1995 and newer), Force outboards (90/120HP, 1995 and newer), and all MerCruiser sterndrive applications that need additional clearance for high-rake propellers. It provides critical corrosion protection for the gear case housing while aiding steering and trim control.

This part is a direct replacement for Mercury OEM part numbers 822777Q1, 97-822777Q1, and 46399A1, as well as Sierra part numbers 18-6014, 18-6014A, and 12680.

• Engineered for use in both fresh water and salt water.
• Provides extra clearance required for high-rake propellers.
• Installation is a direct bolt-on replacement, with mounting hardware included.

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 Sterndrives

Technical Specifications

Package Contents

• 1 × Aluminum Trim Tab Anode (Replaces 822777Q1)
• 1 × Hardware Kit (bolts and washers for installation)

Installation Guide

1. Safety First: Ensure the engine is off and the battery is disconnected before starting work.
2. Access the Anode: Tilt the outboard or sterndrive up to comfortably access the trim tab anode, which is typically located on the underside of the anti-cavitation plate.
3. Remove Old Anode: Use a socket wrench to remove the bolt securing the old anode. It may be tight due to corrosion.
4. Clean the Mounting Surface: Thoroughly clean the mounting area on the gearcase. A wire brush is effective for removing any corrosion or marine growth to ensure a good electrical connection.
5. Install New Anode: Position the new trim tab anode and insert the new bolt from the included hardware kit.
6. Tighten Securely: Tighten the bolt to the manufacturer's recommended torque specification. Do not overtighten. Ensure the anode is firmly seated.
7. Final Check: Lower the drive, reconnect the battery, and verify that the installation does not interfere with the propeller's movement.

Troubleshooting & FAQ

How do I know if this trim tab is right for my engine?
This anode is specifically made for Mercury/Mariner 35HP+ (1995+), Force 90/120HP (1995+), and all MerCruiser sterndrives that need extra propeller clearance. The best way to confirm is to match your existing part number to one of the cross-reference numbers, such as 822777Q1 or 46399A1.

Why is a special anode needed for a high-rake propeller?
High-rake propellers have blades that angle padrões back, which can cause them to hit a standard trim tab. This anode is designed with a specific shape to provide the extra clearance needed to prevent contact and damage.

How often should I replace my trim tab anode?
Anodes should be inspected at least once a season or every 50-100 hours of use. They must be replaced when they are about 50-75% corroded. The rate of wear depends heavily on your boat's location (saltwater vs. freshwater) and any stray electrical currents at your dock.

OEM vs. Aftermarket?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.