Marine-grade aftermarket gearbox trim tab sacrificial anode for selected 25 HP and 30 HP Mercury / Mariner outboard engines.

Suitable for selected 2-stroke and 4-stroke applications, including compatible EFI models.

Designed to help protect the gearbox and lower unit against galvanic corrosion while providing trim tab steering adjustment.

Main Part Number: 853762

Available in Zinc or Aluminium.

Choose Your Anode Material

Zinc Anode

Aluminium Anode

Please select the appropriate anode material for your engine and operating conditions.

Fitment – Mercury / Mariner Outboards

Selected applications:

Selected applications:

Mercury and Mariner used different gearbox and trim tab designs across engine generations.

Compatibility depends on:

Important: This product is not the same as Mercury 853762T01.

Do not order solely by engine horsepower. Please confirm the original anode reference and gearbox configuration.

OEM part numbers are used for identification and compatibility reference only.

1 × Gearbox Trim Tab Anode

Supplied in your selected material:

Mounting hardware is not included unless otherwise specified.

Inspect sacrificial anodes regularly during routine servicing.
Replace when approximately one-third or more of the original material has been consumed, or sooner if recommended by the manufacturer.
Keep the anode free from paint and protective coatings.
Ensure good electrical contact with the mounting surface.

Before ordering, please check:

If the part looks the same as yours, this does not always mean it is the correct part for your outboard.

If unsure, please contact SSI Marine with your engine model and serial number for assistance.

Please confirm compatibility with your exact Mercury / Mariner engine model, serial number and gearbox configuration before purchase.