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 43.229.03 threaded pencil anode is a long-body zinc anode designed for VM marine engine heat exchangers. With a diameter of 14 mm and an overall length of 50 mm (40+10 mm), it features a reliable M8 threaded connection. Its extended body provides increased surface area for corrosion protection, making it ideal for demanding saltwater environments and extended maintenance intervals.
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$ 18,87
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1-2 weeks delivery time The Osculati 43.540.00 pencil anode is a direct-fit zinc anode designed for Volvo Penta heat exchanger manifolds, compatible with OEM reference 800476. Featuring a 15.5 mm diameter and total length of 50 mm (40+10 mm), it uses a 7/16" threaded connection. This anode provides effective galvanic protection for internal cooling passages, helping to extend the service life of the manifold in saltwater conditions.
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$ 16,65
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1-2 weeks delivery time The Osculati 43.540.16 zinc pencil anode is a direct replacement for Volvo Penta heat exchanger manifold anode 823661. With a 26 mm diameter and 52 mm total length (44+8 mm), it features a 3/8" thread for secure installation. Designed to combat galvanic corrosion in marine cooling circuits, this large-format anode offers extended service life and is ideal for engines operating in saltwater environments.
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$ 19,33
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1-2 weeks delivery time The Osculati 43.540.01 zinc pencil anode is a threaded replacement for Volvo Penta OEM part 838929, used in heat exchanger manifolds. With a 15 mm diameter and 30 mm total length, it features a standard M8 thread for easy installation. Designed to deliver effective protection against galvanic corrosion in marine cooling systems, it helps extend engine life under saltwater exposure.
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$ 17,39
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1-2 weeks delivery time The Osculati 43.271.40 zinc pencil anode is designed as a direct replacement for Volvo Penta OEM reference 838929. With a 15 mm diameter, active zinc length of 30 mm, and a 10 mm threaded base, it uses a 7/16" thread for secure installation. Engineered for use in heat exchanger systems, this anode provides durable protection against galvanic corrosion in saltwater environments.
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$ 17,39
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1-2 weeks delivery time The Osculati 43.540.11 is a complete zinc pencil anode with brass plug assembly, designed for Volvo Penta heat exchanger manifolds. The unit features a Ø16 mm zinc insert housed in a Ø57 mm brass holder with a 1/2" BSPT thread. Ideal for saltwater cooling circuits, it replaces combined anode assemblies such as Osculati 43.271.40 with brass fitting, offering durable and reliable corrosion protection.
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$ 37,74
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1-2 weeks delivery time The Osculati 43.540.10 is a combined zinc pencil anode and brass plug assembly for Volvo Penta marine heat exchanger manifolds. Featuring a Ø15 mm zinc core within a Ø67 mm brass body and threaded with a 1/2" BSPT fitting, this unit replaces standard separate plug-anode setups like Osculati 43.540.00 + brass. It provides long-lasting protection against galvanic corrosion in saltwater engine cooling systems.
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$ 44,20
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1-2 weeks delivery time The Osculati 43.228.10 zinc sleeve pencil anode is a direct replacement for Yanmar OEM reference 68241, used in cooling sleeves and heat exchanger housings. With a 12 mm diameter and total length of 41 mm (30+11 mm), this anode is threaded with a 3/8" fitting. Engineered to prevent galvanic corrosion in closed-loop cooling systems, it ensures long-term protection of internal engine components.
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$ 8,99
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1-2 weeks delivery time The Osculati 43.229.40 zinc sleeve pencil anode is designed for use in Yanmar marine engine cooling sleeves and manifolds. With a 12 mm diameter and 32 mm total length, this anode features a 3/8" thread for direct installation. It ensures effective protection against galvanic corrosion in saltwater-cooled systems where threaded anodes are required.
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$ 8,99
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1-2 weeks delivery time The Osculati 43.229.41 zinc pencil anode is built for Yanmar marine engine cooling sleeves, featuring a robust Ø16 mm diameter and extended 60 mm total length (50 mm active zinc + 10 mm threaded base). Equipped with a 7/16" thread, it provides long-lasting galvanic protection for closed-loop cooling systems in saltwater environments, particularly suited for high-output Yanmar models.
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$ 10,69
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1-2 weeks delivery time The Osculati 43.070.34 is a high-performance aluminium anode compatible with Side Power bow thrusters, replacing OEM reference 02481. Designed for use in both saltwater and brackish conditions, it offers superior protection against galvanic corrosion for the thruster unit and propeller assembly. Its lightweight and long-lasting aluminium composition ensures reliable performance with minimal maintenance.
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$ 80,58
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1-2 weeks delivery time The Osculati 43.070.33 zinc anode is designed as a direct replacement for Side Power bow thruster anode 02481. Made from high-purity zinc, it provides efficient galvanic corrosion protection in saltwater environments. This anode is essential for maintaining the integrity of the thruster housing and propeller system, especially on vessels with submerged metallic components.
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$ 106,44
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1-2 weeks delivery time The Osculati 43.070.24 zinc anode is designed to replace the OEM Side Power 101180 anode and is compatible with several bow thruster models, including SP125T, 285STC, SE120–150, SP220–300HYD, and SH160. Built from high-purity zinc for optimal performance in saltwater environments, this anode protects submerged components from galvanic corrosion and ensures reliable operation of the thruster assembly.
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$ 34,27
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1-2 weeks delivery time The Osculati 43.070.25 aluminium anode is a lightweight and efficient corrosion protection solution designed for Side Power retractable bow thrusters. Replacing OEM part 140629, this anode is compatible with models SR80, SR100, SR130, SR170, SR210, and SR240. Made from marine-grade aluminium, it offers excellent protection in saltwater and brackish water, with superior longevity compared to zinc.
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$ 48,50
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1-2 weeks delivery time The Osculati 43.070.32 is a high-quality aluminium anode designed to replace the Side Power OEM part 201180. Made from marine-grade aluminium alloy, it delivers superior galvanic protection in saltwater and brackish water. Ideal for use on a wide range of Side Power bow thrusters, this anode ensures long-term protection of submerged components such as propeller hubs and lower units.
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$ 38,19
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1-2 weeks delivery time The Osculati 43.070.31 zinc anode is a direct replacement for the Side Power OEM part 201180, suitable for a range of bow thruster systems. Made from high-purity zinc, this anode provides reliable galvanic corrosion protection in saltwater environments, safeguarding critical underwater components such as the propeller hub and lower thruster housing.
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$ 50,65
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1-2 weeks delivery time The Osculati 43.070.30 aluminium bow thruster anode is a direct replacement for the OEM Side Power 31180. Manufactured from high-performance aluminium alloy, it provides superior corrosion protection for submerged bow thruster components. Ideal for saltwater and brackish water applications, it ensures longer service life and reduced maintenance compared to traditional zinc anodes.
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$ 25,15
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1-2 weeks delivery time The Osculati 43.070.29 zinc anode is designed as a direct OEM replacement for Side Power part 31180. Built for saltwater environments, it provides robust protection against galvanic corrosion on bow thruster components such as propeller hubs and submerged housings. Manufactured from high-purity zinc, this anode ensures long-lasting defense for your marine propulsion system.
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$ 27,78
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1-2 weeks delivery time Osculati 43.070.28 is an aluminium sacrificial anode designed as a direct-fit replacement for Side Power bow thruster systems using reference 501180. Made from high-grade aluminium alloy, this anode provides excellent corrosion protection in salt and brackish water, while offering reduced weight and longer life compared to zinc. The anode measures 60 mm in diameter and is pre-drilled for easy installation, ensuring seamless compatibility with Side Power equipment.
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$ 137,65
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1-2 weeks delivery time Osculati 43.070.27 is a zinc sacrificial anode specifically designed for Side Power bow thrusters with reference 501180. With a diameter of 60 mm, this anode provides proven corrosion protection in saltwater environments, offering robust performance and longevity. It ensures a precise fit with Side Power thruster systems and is pre-drilled for hassle-free installation during routine maintenance or retrofitting.
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$ 177,17
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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.