Zinc anodes for boats, also known as marine zinc anodes or boat anodes, are sacrificial metal components used to protect the hull and underwater metal parts of boats and yachts from corrosion caused by galvanic currents in seawater.
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1-2 weeks delivery time The Osculati 43.265.03 is a zinc shaft axis anode designed for 35 mm diameter shafts with a 24×2 mm thread, compatible with Eliche Radice propeller systems. Featuring a brass internal hex socket for secure installation, it delivers reliable sacrificial protection in saltwater environments when used with a separate locking nut.
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€ 10,10
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1-2 weeks delivery time The Eliche Radice Zinc Shaft Anode Ø 40 mm – Osculati 43.265.04 is a corrosion protection component designed for propeller shafts with a diameter of 40 mm. This anode includes an internal brass insert with a 24×2 mm threaded hex socket for secure mounting and conductivity. Made of high-purity zinc, it's ideal for use in saltwater environments where galvanic corrosion is a major concern. Compact and durable, it ensures long-term protection for metal components below the waterline.
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€ 14,47
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1-2 weeks delivery time Zinc anode for propeller shafts Ø45 mm with internal brass hexagon and threaded connection (M33×2 mm). Designed to protect submerged rotating parts, such as propeller shafts, from galvanic corrosion. This model, Osculati 43.265.05, is a direct-fit anode made of high-purity zinc for optimal performance in saltwater. The brass insert ensures secure mounting and reliable current transfer.
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€ 21,67
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1-2 weeks delivery time Zinc shaft anode designed for propeller shafts with a 50 mm diameter, featuring an internal brass hexagon and threaded M36×3 mm connection. Manufactured for optimal cathodic protection in saltwater environments, this anode is engineered to combat galvanic corrosion on submerged metallic components. Osculati 43.265.06 ensures reliable electrical bonding and simple installation through its integrated brass fitting.
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€ 28,09
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1-2 weeks delivery time Zinc anode for 55 mm diameter propeller shafts with internal brass hexagon and M40×3 mm thread. Designed to provide long-lasting galvanic protection in saltwater environments, this anode features a durable zinc body and precision-fit brass insert for secure mounting and efficient current flow. Ideal for marine propulsion systems exposed to continuous submersion.
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€ 30,20
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1-2 weeks delivery time High-purity zinc anode engineered for 60 mm propeller shafts. Equipped with a robust brass internal hexagon and precision M45×3 mm threading, this model (Osculati 43.265.07) ensures reliable cathodic protection of submerged metal components. Ideal for saltwater environments, it prevents galvanic corrosion on rotating shafts through sacrificial action.
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€ 44,76
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1-2 weeks delivery time Aluminium shaft line anode for 25 mm diameter shafts, ideal for use in brackish and saltwater environments. Osculati 43.231.01 features a 33 mm outer diameter and dual fixing holes of 6.5 mm for secure mounting. With a total height of 39 mm, this lightweight anode is suitable for high-performance vessels requiring reliable corrosion protection without adding excessive weight.
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€ 4,63
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1-2 weeks delivery time Aluminium anode designed for shaft lines with a 31 mm diameter. Osculati 43.231.02 features a 42 mm outer diameter, two mounting holes of Ø8.5 mm spaced 13.5 mm apart, and an overall height of 53 mm. Ideal for use in saltwater and brackish environments, this anode ensures efficient galvanic protection while maintaining low rotational mass and hydrodynamic balance.
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€ 7,57
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1-2 weeks delivery time Aluminium anode for 37 mm diameter shaft applications, offering efficient protection in both saltwater and brackish conditions. Osculati 43.231.03 features a 46 mm outer diameter, 8.5 mm mounting holes spaced 13.5 mm apart, and an overall height of 62 mm. Designed for marine propulsion systems requiring lightweight corrosion protection with precise and secure installation.
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€ 11,16
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1-2 weeks delivery time Aluminium shaft line anode specifically designed for 42 mm diameter shafts. The Osculati 43.231.04 model features a robust marine-grade aluminium alloy body, 51 mm outer diameter, and mounting holes of 8.5 mm spaced 16 mm apart. With a total height of 68 mm, this anode ensures efficient and lightweight protection from galvanic corrosion in saltwater and brackish environments.
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€ 14,61
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1-2 weeks delivery time Aluminium shaft line anode engineered for 48 mm diameter shafts. Osculati 43.231.05 features a large 61 mm outer diameter and two Ø11 mm fixing holes spaced 22 mm apart. With a 76 mm overall height, this robust anode offers efficient sacrificial protection for vessels operating in saltwater or brackish environments, ensuring long-term reliability of the propulsion system.
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€ 19,11
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1-2 weeks delivery time Heavy-duty aluminium anode for shaft lines with a 57 mm diameter, designed for marine applications in saltwater and brackish conditions. Osculati 43.231.06 features a 72 mm outer diameter, two Ø11 mm mounting holes spaced 22 mm apart, and a height of 84 mm. It provides effective cathodic protection for large propulsion shafts, reducing corrosion and extending system life.
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€ 23,97
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1-2 weeks delivery time Aluminium shaft line anode for Ø65 mm shafts, developed for use in saltwater and brackish conditions. Osculati 43.231.07 features a 75 mm outer diameter, two Ø11 mm mounting holes spaced 29 mm apart, and a total height of 86 mm. This anode ensures reliable sacrificial protection of large propulsion shafts against galvanic corrosion in marine environments.
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€ 26,15
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1-2 weeks delivery time Aluminium shaft line anode designed for 71 mm diameter shafts, ensuring efficient sacrificial protection in saltwater and brackish environments. Osculati 43.231.08 features an 83 mm outer diameter, Ø11 mm mounting holes with 22 mm spacing, and a total height of 98 mm. Suitable for large marine propulsion systems, it delivers robust corrosion resistance without compromising shaft balance.
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€ 38,84
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1-2 weeks delivery time Zinc anode designed for propeller shafts with a 25 mm diameter. Osculati 43.225.00 features a 33 mm outer diameter, Ø6.5 mm mounting holes spaced 11 mm apart, and a height of 39 mm. Built from high-purity zinc, this anode is optimized for sacrificial protection of shaft lines operating in saltwater environments.
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€ 11,21
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1-2 weeks delivery time Zinc shaft line anode for 31 mm diameter shafts, engineered for efficient galvanic protection in full-salinity marine environments. Osculati 43.230.00 features a 42 mm outer diameter, Ø8.5 mm mounting holes spaced 13.5 mm apart, and a total height of 53 mm. This anode offers reliable sacrificial performance to extend the lifespan of metallic propulsion components.
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€ 13,82
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1-2 weeks delivery time Zinc shaft line anode for 37 mm diameter shafts, designed to provide optimal sacrificial protection in high-salinity marine environments. Osculati 43.235.00 features a 46 mm outer diameter, Ø8.5 mm mounting holes with 13.5 mm spacing, and a total height of 62 mm. Ideal for continuous protection of rotating metal components submerged in seawater.
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€ 15,93
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1-2 weeks delivery time Zinc anode for 42 mm diameter shafts, specifically designed for corrosion protection in saltwater environments. Osculati 43.240.00 features a 51 mm outer diameter, Ø8.5 mm mounting holes spaced 16 mm apart, and a height of 68 mm. Built for durability and secure fitment, it offers effective sacrificial protection for submerged rotating components.
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€ 14,77
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1-2 weeks delivery time Zinc shaft line anode tailored for 48 mm diameter shafts, built to deliver optimal galvanic corrosion protection in high-salinity marine environments. Osculati 43.245.00 features a 61 mm outer diameter, Ø11 mm mounting holes with 22 mm spacing, and a height of 76 mm. It is engineered for stable attachment and long-lasting protection of submerged propulsion components.
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€ 23,04
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1-2 weeks delivery time Heavy-duty zinc anode for 57 mm diameter propeller shafts. Osculati 43.250.00 offers strong galvanic protection in saltwater environments, featuring a 72 mm outer diameter, Ø11 mm mounting holes spaced 22 mm apart, and a height of 84 mm. Designed to protect larger propulsion components from electrochemical degradation through sacrificial corrosion.
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€ 31,28
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How do zinc anodes protect marine engines and outboard motors from corrosion?
Zinc anodes, also known as sacrificial anodes, protect marine engines and outboard motors by corroding in place of more important metal parts, such as the hull or outboard components. By attaching hull zinc anodes or trim tab anodes, the less noble zinc metal is sacrificed when placed in an electrolyte solution like saltwater, preventing corrosion of the engine and other vital boat components. Other anodes, like aluminum and magnesium, are also used based on the water type, but zinc remains the popular choice for saltwater environments due to its effective corrosion prevention.
The right choice of marine anodes, whether zinc, aluminum, or magnesium, can greatly extend the lifespan of your boat and its components. Products like the boat lift zinc anode and trim tab anode help protect specific areas from galvanic corrosion. Using high-quality anodes at unbeatable prices is a smart investment for boaters who want to store their boat safely and protect outboard engines and other critical parts. Even components like 316 stainless steel cables benefit from reduced exposure to corrosive damage when effective sacrificial anodes are in place.
How do aluminum, zinc, and magnesium anodes differ in protecting a boat?
Aluminum, zinc, and magnesium anodes all serve as sacrificial metals to protect boats from corrosion, but they perform differently based on the environment. Zinc anodes are commonly used in saltwater, whereas aluminum anodes offer versatility for both salt and brackish water, providing more efficient protection due to their lighter alloy composition. Magnesium anodes are best suited for freshwater applications as they are a more reactive, "less noble" metal, ideal for preventing corrosion in low salinity environments, such as lakes and rivers.
Why is anode placement on the hull plate important for effective corrosion protection?
Proper placement of boat zinc anodes on the hull plate is crucial for effective corrosion protection, as it ensures the sacrificial zinc can adequately neutralize galvanic currents and protect vulnerable metal areas. Anodes like martyr anodes, rudder zincs, and plate zinc are strategically placed to cover high-risk spots on a metal boat, preventing corrosion from spreading. Using a zinc anode kit helps streamline the placement process, ensuring a comprehensive approach to corrosion protection for your boat and its underwater components.
For a complete corrosion prevention solution, explore our Anodes for Aluminium Boats, designed for maximum durability and efficiency.
Are there any specific maintenance practices for prolonging the lifespan of marine fuel pumps?
Regularly changing the boat motor fuel filter is essential to prevent contaminants from reaching the fuel pump, ensuring its longevity and optimal performance. Additionally, keeping the entire fuel system clean and free from debris is crucial in maintaining the efficiency of the marine fuel pump, which plays a vital role in supplying clean fuel to the engine.
For enhanced protection against corrosion in saltwater environments, consider installing Boat Anodes For Saltwater.