Martyr Magnesium MerCruiser Alpha I Gen II Housing Plate Anode – CM821629M
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Martyr Magnesium MerCruiser Alpha I Gen II Housing Plate Anode – CM...
Description
Description
Magnesium MerCruiser Alpha I Gen II Housing Plate Anode, manufacturer part number CM821629M. This magnesium sacrificial anode is intended for freshwater only.
Check the exact part number, mounting position and dimensions against the equipment being serviced.
Specifications and selection
| Manufacturer part number | CM821629M |
|---|---|
| Anode alloy | Magnesium |
| Water type | Freshwater only |
| Listed application | MerCruiser Alpha I Gen II |
| Dimension L | 7.5 in |
| Dimension W | 2.88 in |
| Dimension H | 0.64 in |
| Dimension D | 3.25 in |
Dimension letters follow the manufacturer's drawing. Compare the mounting arrangement and measurements with the part being replaced.
Choosing the correct anode
Freshwater only. Follow the equipment manufacturer's requirements for anode material and application. A shared engine brand or similar appearance alone does not establish compatibility.
View Martyr's anode selection guide. Browse Martyr anodes and kits.
OEM and Part Number Cross-References
The following OEM numbers are cross-referenced to this Martyr part. This is a Martyr aftermarket product. Match the application, mounting details and required anode alloy; a reference number does not establish that the original part uses the same alloy.
| Part Number | Reference |
|---|---|
| 821629A2 | OEM reference: Mercury |
Inspection and replacement
Inspect regularly and replace when approximately half of the anode has been consumed. Keep the anode unpainted and ensure clean, secure electrical contact with the protected metal. Follow the equipment manufacturer's installation instructions.
Martyr anode care and material guide
Compare engine & drive anodes or browse all Martyr anodes.
Manufacturer-listed Fitment
Component anode in the manufacturer MerCruiser Alpha One Gen II kit, 1991 and newer. Match the original mounting configuration; this is an individual component, not the complete kit.
Use all stated model, year, serial-number and configuration limits. This information applies to this exact product; a shared reference number alone does not establish interchangeability.
