00225A for Bar Anode 25–40hp — Replaces Mercury 825271 1
00225A for Bar Anode 25–40hp — Replaces Mercury 825271 1
00225A for Bar Anode 25–40hp — Replaces Mercury 825271 1
Infographic highlighting the superiority of aluminum anodes with benefits listed.
Comparison chart between Aluminum and Zinc for water types and properties
Diagram explaining how anodes work to prevent galvanic corrosion damage on boats.

00225A for Bar Anode 25–40hp — Replaces Mercury 825271 1

Regular price $6.83 Sale

Protect your Mercury or Mariner outboard with a precision-fit aluminum bar 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 for a full replacement:

● 00225A — Qty 1 (Replaces Mercury 825271 1)


Key Benefits

● Aluminum bar anode for lower unit corrosion protection

● OEM-equivalent replacement for Mercury part #825271 1

● 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/Mariner Outboards:

● 4-stroke 25 hp

● 2-cylinder 30 hp

● 3-cylinder 30 hp Jet

● 40 hp 3-cylinder

● 50 hp 3-cylinder

Replaces OEM:

● Mercury 825271 1


Why Aluminum Anodes?

Mercury outboards 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 and protect your outboard. Using zinc anodes on Mercury 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: 0.24 lbs (0.11 kg)


What’s Included

● Aluminum bar anode


Ideal For

● Mercury and Mariner 25–50 hp outboard owners

● Routine corrosion prevention and maintenance

● Mixed-water boating environments

● DIY replacement or professional service