Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerCruiser Sterndrives (Replaces 822777Q1, 46399A1)
Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerCruiser Sterndrives (Replaces 822777Q1, 46399A1) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerC...
Product Details
This high-quality Aluminum Trim Tab Anode – Fits Mercury/Mariner Outboards & MerCruiser Sterndrives (Replaces 822777Q1, 46399A1) is designed for Mercury/Mariner outboards (35HP and above, 1995+), Force outboards (90/120HP, 1995+), and all MerCruiser sterndrive applications that require additional clearance for high-rake propellers. It provides essential corrosion protection for the gear case housing while providing hydrodynamic trim force to aid steering.
This part offers a direct interchange for Mercury OEM part numbers 822777Q1, 97-822777Q1, and 46399A1, as well as Sierra equivalents 18-6014, 18-6014A, and 12680.
- Features a direct bolt-on installation with all necessary mounting hardware included.
- Constructed from cast aluminum meeting MIL-A-24779(SH) specifications for reliable performance in both fresh and salt water.
- Specifically engineered with a compact design to provide extra clearance for high-rake propellers.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 822777Q1 |
| Mercury | 97-822777Q1 |
| Mercury | 46399A1 |
| Sierra | 18-6014 |
| Sierra | 18-6014A |
| Sierra | 12680 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits various Mercury/Mariner and Force outboards from 1995 and newer that require additional propeller clearance.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury/Mariner | Various | 35+ | 2- & 4-Stroke | 1995+ | 822777Q1 | For applications requiring extra clearance |
| Force | Various | 90, 120 | 2-Stroke | 1995+ | 822777Q1 | Confirmed application |
Fits all MerCruiser sterndrive models that require extra clearance for high-rake propellers.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | All models | Various | Various | All | 822777Q1 | For applications requiring extra clearance for high-rake propellers |
Technical Specs
- Product Type
- Aluminum Trim Tab Anode
- Installation
- Direct bolt-on with included hardware
- Material
- Cast aluminum (meets/exceeds mil-spec MIL-A-24779(SH))
- Application
- For use with high-rake propellers requiring extra clearance
- Environment
- Fresh water or salt water compatible
- Dimensions
- 7.75 × 6.68 × 4.00 in (196.9 × 169.7 × 101.6 mm)
- Weight
- 0.81 lb (0.37 kg)
- Color
- Silver/metallic (aluminum)
- Mounting Hardware
- Included
- Warranty
- 1 year
- Purpose
- Protects gear case housing from corrosion while providing hydrodynamic trim force to aid steering
What’s in the Box
- 1 × Aluminum Trim Tab Anode (822777Q1)
- 1 × Hardware Kit (bolts and washers for installation)
Installation Notes
- Disconnect the boat's battery before beginning work.
- Locate and carefully unbolt the old trim tab anode from the underside of the anti-ventilation plate on the gearcase.
- Thoroughly clean the mounting surface where the anode sits to ensure a clean, bare-metal contact for proper electrical conductivity.
- Position the new anode and install it using the provided bolts and washers. Tighten securely, but do not over-torque.
- After installation, check for adequate clearance between the anode and the propeller blades through the full range of trim and tilt motion.
Troubleshooting & FAQ
Why is this anode shaped differently or needed for "high-rake propellers"?
High-rake propellers have blades that sweep back at a steeper angle. This anode's compact design provides the necessary extra clearance to prevent the propeller tips from striking the anode, which could cause damage to both components.
Is an aluminum anode correct for my boat?
Aluminum anodes are the industry standard for modern outboards and sterndrives. They are highly effective in all water types—salt, brackish, and fresh—offering broader protection than traditional zinc (salt only) or magnesium (fresh only) anodes.
How often should I replace my trim tab anode?
Anodes should be inspected at least once a year or every 100 hours of operation. You should replace any anode once it has reached 50% corrosion. Never paint an anode, as this will render it useless.
What are signs of a failing anode?
If you notice rapid or uneven corrosion on your gearcase, propeller, or other underwater metallic parts, your anode may be depleted, making poor electrical contact, or be the wrong material for the water type. A heavily pitted or mostly dissolved anode is a clear sign it's time for replacement.
Can this replace a zinc anode on an older motor?
Yes, aluminum is a suitable and often superior replacement for zinc anodes on older engines, particularly if the boat is used in brackish or fresh water in addition to salt water. For best results, do not mix anode types (e.g., zinc and aluminum) on the same engine.
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.
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