Martyr Zinc Trim Tab Anode for Mercury/MerCruiser – CM31640Z
- Ships same or next business day.
🛡️ PARTSDUCK Promise - Best price, great support & more
🛡️ PARTSDUCK Promise - Best price, great support & more
More than just a price match! Best price, fast shipping, great stock, real support. More Here
Free Shipping Over $99
Free Shipping Over $99
In stock items ship same or next business day from the closest of our 20+ warehouses with stock. Economy Shipping is free over $99.
Phone Support (856) 666-7986
Phone Support (856) 666-7986
Call us with questions 9-5 Monday - Friday EST.
(856) 666-7986
No Fee Returns for 30 Days
No Fee Returns for 30 Days
No restocking fees on most items, full Return Policy
Martyr Zinc Trim Tab Anode for Mercury/MerCruiser – CM31640Z
Description
Description
Zinc Trim Tab Anode for Mercury/MerCruiser, manufacturer part number CM31640Z. This zinc sacrificial anode is intended for saltwater only.
Check the exact part number, mounting position and dimensions against the equipment being serviced.
Specifications and selection
| Manufacturer part number | CM31640Z |
|---|---|
| Anode alloy | Zinc |
| Water type | Saltwater only |
| Dimension OD | 3.6 in |
| Dimension H | 3.3 in |
| Thread (THD) | 7/16-14 UNC |
Dimension letters follow the manufacturer's drawing. Compare the mounting arrangement and measurements with the part being replaced.
Choosing the correct anode
Saltwater 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 product specifications and drawing. 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 |
|---|---|
| 31640Q4 | 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.
Fitment
Manufacturer-listed individual kit component for: Mercury 75 / 80 / 90 / 100 / 115 HP. Match the original component position and all stated limits; this is not a complete kit.
Use all stated model, year, engine-stroke and configuration limits. Match the original anode position, mounting pattern and dimensions before ordering.
