Marine-grade aftermarket gearbox trim tab sacrificial anode for selected 9.9, 13.5, 15, 20 and 25 HP Mercury / Mariner outboard engines, including compatible 2-stroke, 4-stroke BigFoot and Jet models.

Designed to help protect the gearbox and lower unit against galvanic corrosion, particularly in saltwater environments.

Available in Zinc or Aluminium.

Replaces Mercury / Quicksilver Part Numbers: 98432Q6 and 98432T6.

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

• Lightweight alternative to zinc

Please follow the engine manufacturer's recommendations when selecting anode material.

Fitment – Mercury / Mariner Outboards

4-Stroke BigFoot Models

9.9 HP – 4-Stroke BigFoot

13.5 HP – 4-Stroke BigFoot

15 HP – 4-Stroke BigFoot

Applicable serial number ranges for selected models:

• 0G760300 – 1B226999

• 0P075166 – 0P400999

• 0P401000 and Above

• 1B227000 and Above

Important: BigFoot gearbox applications only. Not suitable for standard gearbox models unless the original trim tab reference matches.

2-Stroke Models – 2 Cylinder

15 HP – 2-Stroke

20 HP – 2-Stroke

25 HP – 2-Stroke

Applicable serial number ranges for selected models:

• 0P325500 and Above

• 0T980000 – 0T999999

• 1B000001 and Above

Jet Models

20 JET – Mercury Outboard

Applicable serial number ranges:

• 0T980000 – 0T999999

• 1B000001 and Above

Important: Jet model fitment must be confirmed against the original anode and lower unit arrangement.

Fitment Notes

Mercury / Mariner used different gearbox and trim tab designs across production years.

Compatibility depends on:

• Engine model and horsepower

• 2-stroke or 4-stroke configuration

• BigFoot or standard gearbox

• Engine serial number

• Original anode part number

Replaces Mercury / Quicksilver Part Numbers

• 98432Q6 – Main product reference

• 98432T6 – Alternative Mercury 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: 9.9, 13.5, 15, 20 and 25 HP

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

• Gearbox: Selected BigFoot and compatible 2-stroke applications

• Location: Gearbox / Lower Unit

• Purpose: Sacrificial corrosion protection

• Quality: Marine-grade aftermarket replacement

• Quantity: 1 anode

Package Includes

1 × Trim Tab Anode

Supplied in your selected material:

• Zinc

• Aluminium

Mounting hardware is not included unless otherwise specified.

Important Compatibility Information

Before ordering, please check:

• Exact Mercury / Mariner engine model

• Engine horsepower and stroke type

• Engine serial number

• BigFoot or standard gearbox configuration

• Original anode part number

• Existing trim tab 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.