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 Zinc anode specifically designed for 65 mm shaft lines, ideal for saltwater protection of large marine propulsion components. Osculati 43.250.05 features a 75 mm outer diameter, Ø11 mm mounting holes spaced 29 mm apart, and a height of 86 mm. Built from marine-grade zinc alloy, it delivers durable and effective sacrificial protection in high-corrosion marine environments.
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€ 48,38
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1-2 weeks delivery time Zinc shaft line anode for 71 mm diameter shafts, purpose-built for protection against galvanic corrosion in saltwater environments. Osculati 43.250.10 features a robust 83 mm outer diameter, Ø11 mm mounting holes spaced 22 mm apart, and a height of 98 mm. This heavy-duty anode is ideal for use in commercial or high-performance vessels exposed to continuous immersion in corrosive marine conditions.
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€ 77,30
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1-2 weeks delivery time Extra low-profile aluminium olive anode with 31.8 mm (1" 1/4) internal hole, designed for compact and confined installations. Osculati 43.815.32 has a total thickness of 20 mm and is optimized for the protection of metal tubing and shafting in saltwater and brackish water environments. Its elliptical shape ensures secure mechanical locking and even corrosion dispersion.
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€ 10,17
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1-2 weeks delivery time Compact olive-shaped aluminium anode with 25.4 mm (1") central hole and ultra-low 20 mm thickness. Osculati 43.815.26 is designed for precise protection of shafts, tubing, and other marine metal components in tight spaces. Ideal for installations in saltwater and brackish water, it offers efficient galvanic defense where space constraints are critical.
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€ 10,17
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1-2 weeks delivery time Low-profile aluminium olive anode with 35 mm (1" 3/8) internal hole and compact 20 mm thickness. Osculati 43.815.35 is ideal for corrosion protection of marine tubing and shafts in areas with restricted mounting space. Made of high-performance aluminium alloy, this anode is effective in both saltwater and brackish environments.
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€ 10,17
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1-2 weeks delivery time Extra low-profile aluminium olive anode with a 25 mm internal hole and 20 mm overall thickness. Osculati 43.811.25 is designed for compact marine assemblies requiring galvanic protection in saltwater and brackish conditions. Ideal for small-diameter shafts and tubing where installation space is restricted.
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€ 9,75
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1-2 weeks delivery time Extra-low aluminium olive anode with a 30 mm internal hole and a compact 20 mm thickness. Osculati 43.815.30 is specially designed for tight-space installation on small- to mid-size shafts and tubing. Suitable for saltwater and brackish water applications, it offers consistent galvanic protection for submerged metallic components.
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€ 10,17
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1-2 weeks delivery time Extra-low aluminium olive anode with a 22 mm (7/8") central hole and 20 mm thickness. Osculati 43.811.22 is engineered for tight installations on small shafts or tubing, delivering reliable galvanic protection in saltwater and brackish conditions. Its compact form is ideal for areas with limited clearance around submerged components.
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€ 9,75
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1-2 weeks delivery time Compact zinc olive anode with 31.8 mm (1" 1/4) inner diameter and 20 mm thickness. Osculati 43.810.32 is ideal for galvanic protection of shafts and tubular structures in saltwater. The extra-low profile design makes it suitable for tight installation areas where conventional anodes are too bulky.
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€ 11,83
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1-2 weeks delivery time Extra-low zinc olive anode with a 25.4 mm (1") internal hole and 20 mm total thickness. Osculati 43.810.26 is designed to provide effective galvanic corrosion protection for tubing and shafts in saltwater environments. Its compact profile is ideal for installation in restricted or narrow mounting spaces.
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€ 11,83
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1-2 weeks delivery time Extra-low-profile zinc olive anode with a 35 mm (1" 3/8) internal hole and 20 mm thickness. Osculati 43.810.35 offers efficient galvanic protection for shafts and tubing in saltwater environments. The compact form factor ensures easy installation where space is limited while maintaining reliable corrosion resistance.
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€ 11,83
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1-2 weeks delivery time Extra-low-profile zinc olive anode with a 25 mm internal hole and 20 mm thickness. Osculati 43.810.25 is engineered for compact installations on small-diameter shafts and pipes, delivering effective sacrificial protection in saltwater environments. Its reduced height makes it ideal for systems where vertical space is limited.
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€ 11,83
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1-2 weeks delivery time Extra-low-profile zinc olive anode with a 30 mm internal hole and 20 mm overall thickness. Osculati 43.810.30 provides efficient sacrificial protection in saltwater environments and is specially designed for compact installations on cylindrical components such as shafts and pipes. Ideal for applications requiring minimal vertical clearance.
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€ 10,98
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1-2 weeks delivery time Compact olive-shaped zinc anode with 22 mm (7/8") internal diameter and 20 mm thickness. Osculati 43.810.22 is built for corrosion protection of small-diameter shafts and tubular structures in saltwater environments. Its extra-low profile is ideal for installations where space is restricted but protection cannot be compromised.
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€ 10,58
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1-2 weeks delivery time Circular aluminium anode for hidden mounting, with 135 mm base diameter, 47 mm height, and total weight of 1530 g. Osculati 43.918.46 is ideal for protecting hulls and metal structures below the waterline. Designed for installations where external bolts are not permitted, this anode ensures reliable corrosion protection while maintaining a clean hull surface.
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€ 66,02
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1-2 weeks delivery time Round magnesium anode for hidden mounting, specifically engineered for freshwater environments. Osculati 43.918.48 has a 120 mm base diameter, 35 mm height, and weighs 550 g. Its concealed mounting design ensures a streamlined appearance while delivering effective corrosion protection for hulls and submerged structures.
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€ 71,19
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1-2 weeks delivery time Magnesium anode with hidden mounting system, ideal for vessels operating in freshwater. Osculati 43.918.47 features a 135 mm base diameter, 47 mm height, and weighs 980 g. The concealed installation ensures a smooth hull surface while providing high-efficiency protection for metal components submerged in low-conductivity water.
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€ 85,99
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1-2 weeks delivery time High-capacity zinc anode with concealed mounting, designed for saltwater corrosion protection. Osculati 43.918.28 features a 120 mm base diameter, 35 mm height, and a heavy-duty 2000 g weight. Its hidden installation ensures smooth hull lines while delivering long-term protection to underwater metallic structures.
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€ 65,30
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1-2 weeks delivery time Designed for effective protection against galvanic corrosion in marine environments, the Osculati 43.918.45 zinc anode features a hidden mounting system, offering a cleaner appearance and reduced hydrodynamic resistance. With a base diameter of 135 mm, height of 47 mm, and total weight of 3.91 kg, this sacrificial anode ensures efficient current flow in saltwater applications. Ideal for underwater metal parts such as hulls, shafts, or rudders, where visible fasteners are not desirable.
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€ 131,08
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1-2 weeks delivery time The Osculati 43.224.60 is a zinc cone anode specifically engineered for Max Prop systems, featuring a 39 mm internal diameter and compatibility with 25 to 28 mm shafts. Its 6-hole design ensures secure, even mounting, while the zinc alloy provides optimal sacrificial protection in saltwater environments. Ideal for sailboat propulsion setups where high-performance corrosion defense is critical.
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€ 11,48
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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.