Magnesium and aluminum anodes, also known as sacrificial anodes, are essential for protecting boats from corrosion caused by electrolysis in marine environments. These anodes are commonly used on trim tabs, hulls, outboard motors, and underwater metal parts.
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1-2 weeks delivery time Talamex Zinc Bolt-On Rudder Blade Anodes deliver durable protection for rudder blades in saltwater environments. With easy single-bolt installation, these anodes provide long-lasting defense against corrosion, ensuring the safety and longevity of your vessel.
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$ 6.91
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1-2 weeks delivery time Talamex Zinc Conical Propeller Anodes offer a secure and durable fit to protect your propeller shaft from corrosion in saltwater environments. With a unique conical shape, these anodes provide a tight installation, ensuring lasting defense against electrolysis.
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$ 11.22
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1-2 weeks delivery time Talamex Zinc 6-Side Propeller Anodes provide essential corrosion protection for propellers in saltwater environments. These six-sided zinc anodes ensure reliable anti-corrosion defense, helping to maintain your propeller’s performance and longevity.
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$ 11.44
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1-2 weeks delivery time Talamex Zinc Shaft Collar Anodes offer reliable corrosion protection for propeller shafts in saltwater environments. These ring-shaped anodes are easy to install with two bolts, providing robust defense for your vessel’s essential components.
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$ 13.48
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1-2 weeks delivery time Talamex Zinc Shaft Ball Anodes provide optimal corrosion protection for propeller shafts in saltwater. These oval-shaped zinc anodes are specifically crafted to safeguard your vessel, offering reliable, long-lasting performance.
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$ 15.75
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1-2 weeks delivery time Vetus Zinc Bolt-On Hull Anodes provide effective corrosion protection for vessels in saltwater environments. Made from high-quality zinc, they meet military standards (A - 18001 K). Available in sizes from 1.0 kg to 4.5 kg. Fasteners are sold separately. Ideal for steel, fiberglass, and wooden boats in salty and brackish waters.
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$ 47.73
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1-2 weeks delivery time Vetus ZINKAS Zinc Shaft Collar Anodes offer effective corrosion protection for shafts in saltwater environments. These anodes ensure reliable mounting, even as they erode. Available in various sizes from 25 mm to 60 mm shaft diameters. Fasteners are included. Not recommended for high-speed vessels due to potential imbalance during significant erosion.
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$ 28.04
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1-2 weeks delivery time Vetus SN Zinc Propeller Anodes offer reliable corrosion protection for propellers and shafts. They are highly effective even under erosion, providing continuous protection. Easy to install and securely mounted to the shaft, they are ideal for yacht and boat owners seeking durable anode solutions.
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$ 61.29
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1-2 weeks delivery time Vetus WOA Zinc Weld-On Hull Anodes are designed for use in saltwater to provide reliable corrosion protection for boat hulls. Made from high-quality zinc, these anodes are available in both rectangular and teardrop shapes, offering long-lasting protection. Available in various sizes and weights, they ensure continued performance even as they erode.
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$ 22.67
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1-2 weeks delivery time TEC Zinc Propeller Shaft Ball Anodes are designed to effectively protect your propeller shaft from corrosion. These high-quality zinc anodes are available in various diameters from 18mm to 50mm, ensuring reliable protection for your vessel’s essential components.
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$ 37.20
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1-2 weeks delivery time The Hollex Aluminium Ball Shaft Anode is a spherical sacrificial anode designed to protect boat propeller shafts against corrosion in brackish and saltwater environments. Its steel core helps prevent the anode from becoming loose around the shaft. Available for shaft diameters of 22, 25, 25.4 (1"), 30, 35, 38, 40, 45, 50 and 60 mm. Manufactured from aluminium, the anode features a split ball-shaped design for installation around the shaft. Supplied individually.
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$ 12.64
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1-2 weeks delivery time The Hollex Zinc Ring Propeller Shaft Anode is a ring-shaped sacrificial anode designed for corrosion protection of propeller shafts in saltwater environments. It is installed against the front of the propeller and is available in 20 variants for shaft diameters from 22 to 130 mm. Manufactured from zinc, the anodes have external diameters ranging from 60 to 210 mm, depending on the selected shaft size. The range includes versions with anode thicknesses of 15, 18, 29, 30, 40 and 60 mm. Select the appropriate version according to the shaft diameter and required anode dimensions.
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$ 9.26
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1-2 weeks delivery time E. Polipodio zinc shaft collar anodes for propeller shaft installations, available in 11 diameter configurations from Ø18 to Ø50 mm. The range includes models for 18, 20, 22, 25, 28, 30, 32, 35, 38, 40 and 50 mm shafts. The split ring-style collar construction allows the anode to be fitted around the shaft. Select the required version according to shaft diameter.
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$ 26.23
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1-2 weeks delivery time E. Polipodio zinc propeller shaft ball anodes for shaft diameters from Ø18 to Ø50 mm. The range includes 13 configurations for 18, 22, 25, 25.4, 28, 30, 32, 34, 35, 38, 40, 45 and 50 mm shafts. The split ball-type construction consists of two halves fitted around the propeller shaft and secured with the supplied bolts. Select the required model according to shaft diameter.
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$ 37.20
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1-2 weeks delivery time The Osculati 43.100.00 zinc anode is designed to fit over shaft nuts on Renault Marine propeller shafts (22/25 mm). With 16×2 mm internal thread and compact dimensions, it ensures direct galvanic protection of the shaft nut in saltwater. Ideal for fast and localized cathodic defense of metal components under high stress.
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$ 27.72
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How does a sacrificial boat anodes help protect a boat's hull from corrosion?
A sacrificial anode, such as a zinc or magnesium anode, helps protect a boat's hull from corrosion by corroding in place of the boat’s metal parts. When placed on a hull plate or trim tabs, the anode absorbs the corrosive effects of electrolysis, preventing damage to critical components. Marine anodes, like those in an anode kit, are essential for boats in both fresh and saltwater environments, offering long-lasting protection from galvanic corrosion caused by dissimilar metals.
For effective corrosion prevention, explore our Anodes for Aluminium Boats, specifically designed to safeguard your vessel’s hull and underwater components.
How does a magnesium anode differ from an aluminum anode in marine applications?
Magnesium anodes are primarily used in fresh water environments, where they offer superior protection against corrosion due to their high reactivity. In contrast, aluminum anodes are more effective in brackish water or saltwater settings, providing long-lasting protection for components like the hull plate, trim tab, and outboard motors. Both types of anodes help protect your boat from corrosion, but the choice depends on the water type and specific application needs.
What is the purpose of a trim tab anode, and how does it protect an outboard motor?
A trim tab anode, often made from zinc or aluminum, is installed on the lower unit of an outboard motor to protect it from galvanic corrosion. By acting as a sacrificial anode, it corrodes in place of more critical metal components like the motor's transom or propeller. Anodes for boats, such as martyr anodes, should be regularly replaced to ensure the outboard motor remains fully protected, especially in saltwater or brackish environments.