Aluminium Lower Unit Anode for Yamaha Outboards

Marine-grade aluminium sacrificial lower unit anode for selected Yamaha 2 HP, 2.5 HP, 3 HP, 4 HP, 5 HP and 6 HP 2-stroke and 4-stroke outboard engines.

Designed to help protect the outboard's lower unit and underwater metal components against galvanic corrosion.

Please note: This listing is for the ALUMINIUM version.

A separate ZINC version is also available from SSI Marine.

Fits Yamaha Outboards

2 Stroke

2 HP – 2B
3 HP – 3A
4 HP – 4A
4 HP – 4B
5 HP – 5C
4A / 5C – selected 1990 onwards applications

4 Stroke

2.5 HP – F2.5A
2.5 HP – F2.5B
4 HP – F4A
4 HP – F4B
5 HP – F5A
6 HP – F6C

Replaces Yamaha Part Numbers

6L5-45251-03
6L5-45251-03-00
6L54525103
6L5452510300
6L5-45251-02
6L5-45251-02-00
6L5-45251-01
6L5-45251-00
68D-G5251-00
68D-G5251-00-00

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

Product Features

ALUMINIUM anode
Lower unit / gearbox anode
Sacrificial corrosion protection
Marine-grade aftermarket part
Manufactured to OEM specifications
Fits selected Yamaha 2-stroke and 4-stroke outboards
2 HP
2.5 HP
3 HP
4 HP
5 HP
6 HP
Replaces Yamaha 6L5-45251-03
Supersedes earlier 6L5-45251-02
New
UK stock

Aluminium Version – Please Check Before Ordering

This listing is specifically for the ALUMINIUM version of the anode.

Please check which type of anode you require before ordering.

SSI Marine also stocks a ZINC version for these applications, which will be listed separately.

Important – Please Check Compatibility

Please do not order by horsepower or appearance alone.

Before purchasing, please check:

Exact engine model
Engine year
Engine serial number
Existing anode
Original Yamaha part number
Required anode material – Aluminium or Zinc

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

If you are unsure, please send us your engine model and serial number before purchasing and our technical team will be happy to help.

Why Buy From SSI Marine?

Marine-grade aftermarket & OEM-spec parts
Workshop-tested products
More than 10 years supplying outboard parts
UK stock
Same working day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
Technical support from experienced outboard specialists
Collection available from Leigh, Greater Manchester
Workshop open Monday–Friday, 9 AM–5 PM

Yamaha Outboard 2 HP 2.5 HP 3 HP 4 HP 5 HP 6 HP Aluminium Lower Unit Anode 6L5-45251-03