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🛥️ Stay ahead of corrosion—because your boat deserves the best defense!
The Martyr CMR03M Magnesium Rudder & Trim Tab Disc Anode is a precision pressure diecast sacrificial anode designed exclusively for freshwater corrosion protection. Manufactured under ISO 9001 standards, it features a high-purity magnesium alloy that outperforms alternatives by preventing iron contamination. Ideal for marine professionals seeking reliable, long-lasting protection for rudders and trim tabs, this anode is part of Martyr’s trusted lineup, offering tailored alloy options for all water types.
| ASIN | B003E1UHMI |
| Brand | MARTYR |
| Brand Name | MARTYR |
| Customer Reviews | 4.8 out of 5 stars 74 Reviews |
| Global Trade Identification Number | 00628309127886 |
| Included Components | Magnesium Rudder Anode |
| Item Dimensions L x W x Thickness | 3.75"L x 2"W x 3.75"Th |
| Item Thickness | 0.25 Hundredths-Inches |
| Item Weight | 0.39 Pounds |
| Manufacturer | Martyr Anodes |
| Material | Magnesium |
| Material Type | Magnesium |
| Model Number | CMR03M |
| Number of Pieces | 1 |
| Part Number | CMR03M |
| Product Dimensions | 3.75"L x 2"W x 3.75"Th |
| Shape | Round |
| UPC | 628309127886 |
| Unit Count | 1.0 Count |
J**E
Perfect fit
All good
L**E
Exact fit
Exactly what was on the boat previously!
M**N
Perfect replacement for trim tab
Bought this to replace the anodes on my trim tabs, the kit comes with 2 halves, so with some hardware one kit took care of both tabs
B**N
Magnesium Anodes
Product was exactly what I expected
C**F
Just as expected
Anodes came quickly and were as described
P**O
Trim Tab anodes
We use these anodes on the swim tabs of our boat. We replace them every year. These are a good brand and work well.
D**A
Split this assembly and put each half on the top ...
Split this assembly and put each half on the top of the trim tabs and solved the issue I was having on the out drive.
L**B
For fresh water only
Had to send them back some how I missed the small print where it said for Fresh Water use only. Didn't know you needed them in fresh water.
Trustpilot
1 month ago
3 weeks ago