Propeller Nut Anode D-Shaft Zinc | Martyr CMPNZD

Propeller Nut Anode D-Shaft Zinc | Martyr CMPNZD

Zinc sacrificial anode designed for D-shaft propeller nuts, measuring 2.95 inches in length with a 2.3-inch outer diameter. This corrosion-control component protects fasteners and shaft hardware from galvanic attack, preserving structural integrity in marine service.

Protect your propeller assembly with this essential zinc anode. Each replacement nut comes complete with fasteners and a single-use nylon patch for initial installation. For optimal security and longevity, apply thread-locking compound or wrap with Teflon tape before assembly.

• D-Shaft Zinc Propeller Nut Anode. 2.95-inch length. 2.3-inch outside diameter.

Additional Information

Keep Your Propeller Safe from Saltwater Corrosion

Is your boat ready for the next season? Saltwater can be very harsh on metal parts. It causes a process called galvanic corrosion. This process can destroy your propeller over time. Fortunately, the Martyr CMPNZD Zinc Propeller Nut Anode provides a simple solution. It acts as a shield for your valuable marine equipment.  

Why Choose the Martyr CMPNZD Anode?

This product is a high-quality "zinc" designed for D-shaft propellers. It belongs to the premium Martyr line from Canada Metal. These anodes use a specialized alloy that meets strict US Military Specifications. Because of this, you get reliable and consistent protection. The kit is specifically crafted for 1-1/4" shafts. It provides a perfect fit for many common boat models.  

Benefits of Using a Zinc Propeller Nut Anode

First, zinc is the industry standard for saltwater use. It is highly active and sacrifices itself to save your propeller. Second, this anode is pressure die-cast for maximum density. This means it lasts longer than cheaper alternatives. Third, the streamlined design prevents vibration. You can enjoy a smooth ride without worrying about balance issues.  

Simple DIY installation for Boat Owners

You do not need to be a mechanic to install this kit. The CMPNZD is designed for easy do-it-yourself maintenance. It often comes as a replacement for worn-out anodes on your prop nut. Please remember to clean the mounting surface first. Good metal-to-metal contact is vital for the anode to work. You should also avoid painting the zinc. Paint will stop the chemical reaction and leave your boat at risk.  

When Should You Replace Your Anode?

Check your zincs during every haul-out or inspection. You should replace them when they are half-depleted. If the anode looks pitted or worn, it is doing its job. However, a fully dissolved anode offers zero protection. Using a fresh Martyr CMPNZD kit ensures your drivetrain stays in top shape. It is a small investment that prevents very expensive repairs later.