25–30 HP Mercury Mariner Outboard Trim Tab Anode 853762 – Zinc / Aluminium

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

• Traditional sacrificial anode material

• Particularly suitable for saltwater applications

Aluminium Anode

• Marine-grade aluminium alloy

• Suitable for saltwater and brackish water applications

• Suitable for freshwater applications where recommended by the manufacturer

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

Fitment – Mercury / Mariner Outboards

2-Stroke Models

Selected applications:

• 25 HP – 2-Stroke

• 30 HP – 2-Stroke

4-Stroke Models

Selected applications:

• 25 HP – 4-Stroke

• 30 HP EFI – 4-Stroke

Important Fitment Notes

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

Compatibility depends on:

• Exact engine model

• Engine horsepower

• 2-stroke or 4-stroke configuration

• Engine production year

• Engine serial number

• Gearbox design

• Original trim tab part number

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.

Part Number

• 853762 – Main product reference

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

Product Details

• Product Type: Gearbox Trim Tab Anode

• Material: Zinc or Aluminium

• Application: Mercury / Mariner Outboards

• Horsepower: 25 HP and 30 HP

• Engine Types: Selected 2-Stroke and 4-Stroke

• Engine Versions: Selected EFI applications

• Location: Gearbox / Lower Unit

• Purpose: Sacrificial corrosion protection

• Additional Function: Steering torque adjustment

• Quality: Marine-grade aftermarket replacement

• Quantity: 1 anode

Package Includes

1 × Gearbox Trim Tab Anode

Supplied in your selected material:

• Zinc

• Aluminium

Mounting hardware is not included unless otherwise specified.

Anode Maintenance

• 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.

Important Compatibility Information

Before ordering, please check:

• Exact Mercury / Mariner engine model

• Engine horsepower and stroke type

• Engine production year and serial number

• Gearbox configuration

• Original anode part number

• Existing anode shape and dimensions

• Required anode material

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.

Why Buy From SSI Marine?

• Workshop-tested aftermarket & OEM-spec parts

• Same-day dispatch before 1 PM Monday–Friday

• Royal Mail Tracked 24

• UK stock – collection available from Leigh, Greater Manchester

• Technical support from experienced outboard specialists

Buyer Responsibility

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