Metal 00044A anode with a bolt on a white background, featuring 'Made in USA' text.
Technical drawing of a 00044A anode with dimensions labeled on a white background.
Diagram showing proper assembly of a 00044A anode with labeled parts on a white background.
Infographic highlighting the superiority of aluminum anodes with benefits listed.
Comparison chart between Aluminum and Zinc for water types and properties
Diagram showing an anode wear indicator on an anode with text about replacing it.
Diagram explaining how anodes work to prevent galvanic corrosion damage on boats.

00044A for Trim Tab Anode — Replaces Mercury 31640Q4 & Honda 41107-ZW1-003ZA

Regular price $11.20 Sale

Protect your outboard or outdrive with a precision-fit aluminum trim tab anode engineered to meet OEM requirements and deliver reliable corrosion protection in salt, brackish, or fresh water. Made in the USA for consistent performance and durability.


Contents

This product includes all required aluminum anodes and mounting hardware for a full replacement:

● 00044A — Qty 1 (Replaces 31640Q4 / 41107-ZW1-003ZA)


Key Benefits

● Aluminum anode for trim tab corrosion protection

● OEM-equivalent replacement for Mercury and Honda applications

● Aluminum alloy approved for use in all water types

● Manufactured in the USA to MIL-DTL-24779 military specification

● Patented red spot wear indicator for easy visual inspection

● Meets Mercury factory requirements — won’t invalidate warranty

● Longer-lasting and more effective than traditional zinc anodes


Compatibility

Fits:

● Mercury outboards 35 hp and up

● Mariner outboards 35 hp and up

● Mercruiser Alpha 1 outdrives

Replaces OEM:

Mercury 31640Q4

● Honda 41107-ZW1-003ZA


Why Aluminum Anodes?

Mercury and Mercruiser products are factory-equipped with aluminum anodes because they provide reliable protection across salt, brackish, and freshwater environments. Unlike zinc, which can become inactive in freshwater, aluminum continues to perform. Using zinc anodes on Mercury or Mercruiser applications may also void your manufacturer warranty, making aluminum the correct and compliant choice.


Product Specifications

● Material: Navalloy® Aluminum Alloy

● Water Type: Salt, Brackish, Fresh

● Manufacturing Standard: MIL-DTL-24779

● Wear Indicator: Patented red spot system

● Total Weight: 0.4 lbs (0.17 kg)


What’s Included

● Complete aluminum anode

● Mounting bolt

● Installation instructions


Ideal For

● Mercury, Mariner, and Mercruiser owners

● Routine corrosion prevention and maintenance

● Mixed-water boating environments

● DIY replacement or professional service