


Desertcart purchases this item on your behalf and handles shipping, customs, and support to British Virgin Islands.
🛥️ Stay ahead of corrosion—protect your boat like a pro!
The Martyr CMR03AL Aluminum Rudder/Trim Tab Anode offers superior, cadmium-free corrosion protection designed specifically for brackish water environments. Engineered with ISO 9001 certified quality, this lightweight anode provides up to 50% longer life than traditional zinc alternatives. Sold as a complete pair with stainless steel Allen screw hardware, it ensures balanced, reliable defense for your boat’s rudder and trim tab, helping you avoid costly repairs and maintain peak marine performance.








| ASIN | B003E1UHOQ |
| Best Sellers Rank | #115,181 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #28 in Sailing Hardware |
| Brand | MARTYR |
| Color | silver |
| Compatible Groove Diameter | 3.75 inches |
| Customer Reviews | 4.7 4.7 out of 5 stars (274) |
| Drive System | "" |
| Exterior Finish | Aluminum |
| Fastener Size | 5/16'' x 1-1/2'' |
| Fastener Type | Screw |
| Finish Types | Uncoated |
| Global Trade Identification Number | 00628309127855 |
| Head Type | Flat |
| Included Components | Aluminum Rudder / Trim Tab Anode with Allen Screw |
| Item Diameter | 3.75 inches |
| Item Dimensions | 11.63 x 7 x 5 inches |
| Item Highlight | Sacrificial Anode for your Rudder, Corrosion protection for your boat in BRACKISH water |
| Item Weight | 8.96 ounces |
| Manufacturer | Martyr |
| Material Type | Aluminum |
| Maximum Shear Strength | 2,700 psi |
| Metal Type | Aluminum |
| Model | CMR03AL |
| Number Of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Part Number | CMR03AL |
| Screw Head Style | Trim |
| Screw Point Style | Hex Point |
| Set Screw Thread Type | UNC or UNF |
| Size Name | 0.5" x 3.75" x 0.34" |
| Thread Class | 2A |
| Thread Coverage | "" |
| Thread Size | "" |
| Thread Style | "" |
| Thread Type | Unc Or Unf |
| UPC | 779420557332 628309127855 |
| Unit Count | 1 Count |
| Warranty Description | 90 days |
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