Mercury shaft plate anode – code: 5123310 – Motomarine

Mercury shaft plate anode – code 5123310 (Motomarine)

The’shaft plate anode Motomarine with code 5123310 is a spare part designed for the maintenance of the shaft assembly on Mercury/Mariner engines. In the nautical field, the anode is a consumable component that falls within periodic inspection and replacement activities, aimed at helping protect metal parts exposed during use in water.

Product identification

• Type: shaft plate anode for shaft
• Product code: 5123310
• Brand/Supplier: Motomarine S.R.L.
• Declared intended use: Mercury/Mariner engines

Shape and positioning

The spare part is described as plate (previously also referred to as “wedge anode”), a typical geometry of anodes intended for specific areas of the shaft. The shape is designed to fit the seat provided by the engine manufacturer or the related spare parts diagram, allowing an orderly replacement during maintenance operations.

Compatibility: how to check it correctly

• the code 5123310 on the spare parts diagram or on the parts list of your engine;
• matching the removed anode (shape and fixing points);
• any manufacturer notes regarding the “shaft” position.

In the existing content, the product is associated with Mercury/Mariner engines 30–350 HP: use this data as general indication and always confirm through the code and spare parts manual of your engine.

Typical applications in the nautical field

This plate anode is a component used in contexts of routine maintenance e storage outboard/inboard-outboard engines where the presence of anodes on the shaft is expected. It is particularly relevant when the unit operates in environments where galvanic corrosion can be a factor to consider (for example, in the presence of multiple metals in contact and prolonged water exposure).

When replacement can be useful

• During periodic checks of the engine and shaft.
• During storage or before the season, as part of the maintenance checklist.
• When the existing anode is worn or no longer efficient.
• After interventions on the shaft requiring disassembly and restoration.

The replacement of the anode is among the activities that help maintain over time the protection setup provided by the manufacturer, without intervening on structural components.

Simpler spare part management thanks to the code

The reference 5123310 allows a quick identification of the component, useful both for the end user and for workshops and shipyards managing multiple engines and configurations. In technical terms, working by code reduces the risk of confusion between anodes similar in shape but different in seat or fastening.

Maintenance-oriented spare part

An anode is a consumable component: having it available as a specific spare part allows planning interventions without improvisation, especially when operating in contexts where the boat remains in the water or where a regular inspection routine is desired.

Check before installation

Before installation, it is good practice to verify that:

• the mounting seat on the shaft is clean and free of residues;
• the removed anode corresponds to shape e fixing;
• the spare part code used is the one provided (in this case 5123310).

Installation: general instructions

Installation must follow the instructions in the engine manual or the spare parts diagram. In the absence of specific instructions, it is advisable to rely on qualified personnel, especially when access to the shaft area requires disassembly or when working in a shipyard.

Periodic inspection

For proper management, the anode must be periodically inspected and replaced when worn. The frequency depends on use and the navigation environment; for this reason, it is preferable to follow the manufacturer's recommendations and the maintenance procedures adopted by the reference workshop.

FAQ – Frequently Asked Questions

What is the code of this stem plate anode?

The product code indicated for this Motomarine spare part is 5123310.

For which engines is the anode plate stem 5123310 suitable?

It is suitable for Mercury/Mariner engines. To confirm compatibility with your specific model, always check the code 5123310 on the parts diagram or in the engine manual.

Where is this anode installed?

This is a plate-format anode intended for the shaft. The exact position and mounting methods depend on the engine model and must be verified in the technical documentation.

How can I check if it is the correct replacement before purchasing?

Compare the code 5123310 with the parts list of your engine and, if possible, compare the shape and mounting with the anode removed from the shaft.

When should a stem anode be checked or replaced?

Generally during periodic checks and during storage or pre-season. The frequency depends on usage and the navigation environment: follow the manufacturer's or workshop's instructions.