---
product_id: 90981032
title: "Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver"
brand: "martyr"
price: "¥5784"
currency: JPY
in_stock: true
category: "Martyr"
url: https://www.desertcart.jp/products/90981032-martyr-cmr03al-aluminum-rudder-trim-tab-anode-with-allen-screw
store_origin: JP
region: Japan
---

# Optimized for brackish water ISO 9001 certified quality 50% longer corrosion protection Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver

**Brand:** martyr
**Price:** ¥5784
**Availability:** ✅ In Stock

## Summary

> 🛥️ Keep your boat battle-ready with corrosion armor that lasts longer!

## Quick Answers

- **What is this?** Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver by martyr
- **How much does it cost?** ¥5784 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/90981032-martyr-cmr03al-aluminum-rudder-trim-tab-anode-with-allen-screw)

## Best For

- martyr enthusiasts

## Why This Product

- Trusted martyr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Marine Innovation:** Manufactured under ISO 9001 standards by Martyr, a leader in sacrificial anode technology.
- • **Eco-Friendly & Lightweight:** Cadmium-free design reduces weight and fuel consumption without compromising durability.
- • **Unmatched Corrosion Defense:** Shield your rudder and trim tab from costly marine metal loss with precision aluminum anodes.
- • **Dual-Sided Balanced Protection:** Complete pair with stainless steel hardware ensures even, reliable defense on both sides.
- • **Engineered for Brackish Waters:** Specialized aluminum alloy resists passivation, delivering consistent performance in mixed salinity.

## Overview

The Martyr CMR03AL Aluminum Rudder/Trim Tab Anode offers superior corrosion protection for marine vessels, especially in brackish water environments. Featuring a cadmium-free aluminum alloy that lasts up to 50% longer than zinc anodes, it comes as a complete pair with stainless steel Allen screw hardware for secure installation. Manufactured under ISO 9001 standards, this lightweight anode reduces fuel consumption while preventing costly metal damage to rudders and trim tabs.

## Description

Buy Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver | Sacrificial Anode for your Rudder, Corrosion protection for your boat in BRACKISH water: Deck Hardware - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- PREVENT COSTLY MARINE CORROSION DAMAGE: Protect propellers, hull plating, and underwater components from galvanic corrosion. Stop pitting, metal loss, and costly repairs with reliable protection for boats in saltwater and freshwater environments.
- BRACKISH WATER ANODE PERFORMANCE: Aluminum marine anodes deliver reliable corrosion protection in varying salinity conditions, resisting passivation for consistent performance in brackish water applications.
- HIGH-EFFICIENCY ALUMINUM ANODES: Up to 50% longer life than zinc, delivering greater corrosion protection per pound with a lightweight design that helps reduce fuel use. Cadmium-free for a cleaner, environmentally responsible choice.
- SOLD AS A COMPLETE PAIR: Includes two precision-cast sacrificial anodes with stainless steel bolt and nut hardware for secure installation on both sides of the rudder or trim tab, providing balanced corrosion protection.
- TRUSTED MARINE BRAND, ISO 9001 MANUFACTURING: Martyr produces zinc, aluminum, and magnesium sacrificial anodes using a certified ISO 9001 process for consistent quality, reliable corrosion protection, and dependable replacement intervals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003E1UHOQ |
| Best Sellers Rank | #133,207 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 |

## Product Details

- **Exterior Finish:** Aluminum
- **Head Style:** Trim
- **Item dimensions L x W x H:** 11.63 x 7 x 5 inches
- **Material:** Aluminum
- **Thread Size:** ""

## Images

![Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver - Image 1](https://m.media-amazon.com/images/I/51sSdwEN9aL.jpg)
![Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw, silver - Image 2](https://m.media-amazon.com/images/I/81EgL799fAL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Martyr CMR03AL Aluminum Rudder/Trim Tab Anode with Allen Screw
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**Shop now:** [https://www.desertcart.jp/products/90981032-martyr-cmr03al-aluminum-rudder-trim-tab-anode-with-allen-screw](https://www.desertcart.jp/products/90981032-martyr-cmr03al-aluminum-rudder-trim-tab-anode-with-allen-screw)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-13*