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Mercruiser Sterndrive Aluminum Anode Kit
for R, MR and Alpha One Generation I
- Complete sacrificial anode kit to replace all factory
installed anodes found on the transom and drive unit
- Genuine Mercury part
- Includes mounting hardware
- Aluminum anodes - for use in fresh, salt or brackish
water
- Mercury part number: 888756Q04
- Replaces Mercury part numbers: 888756A2 and 888756Q02
- Aluminum anodes are what Mercury installs from the
factory, but magnesium anodes are more effective in fresh water
- See ebay item number
121106211011 for this same kit in magnesium
- Never paint anodes
- Anodes should be checked and cleaned frequently - a
dirty anode is not protecting your outdrive
- Anodes should be replaced once they have dissolved 25%
to 50%
- Installation of a Mercathode system can prolong the life
of your anodes
- Boats connected to shore power should also have a
galvanic isolator installed
- Please check the application chart below for specific
models this part fits - if you are not sure of your model or year
please contact us with your sterndrive serial number
Kit Contents
Number
From Picture |
Description |
Part Numbers |
Quantity
In Kit |
1 |
Gimbal Housing Anode |
821631A1
821631A 1
821631B1
821631B 1
821631C
821631Q1
821631Q 1 |
1 |
2 |
Gimbal Housing Bolt Head
Anode |
55989
55989A3
55989A 3
55989A4
55989A 4
55989A9
55989A 9
55989Q9
55989Q 9 |
2 |
3 |
Trim Tab Anode |
31640
316403
31640 3
316404
31640 4
31640A1
31640A 1
31640A2
31640A 2
31640A4
31640A 4
31640B4
31640B 4
31640Q4
31640 Q4 |
1 |
Application Chart
Outdrive Model |
Year |
Serial Number Range |
R / MR / Alpha One Generation I |
1983 - 1990 |
6225577 - 0D469828 |
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