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 Osculati 43.070.21 is a lightweight aluminium sacrificial anode engineered for Side Power SP-SE 30/40 bow thrusters, matching the original reference 61180. Designed for saltwater and brackish conditions, this anode ensures effective corrosion protection with less weight than zinc equivalents. With a compact, precisely machined profile and easy mounting, it guarantees full compatibility and straightforward replacement during service.
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$ 26,63
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1-2 weeks delivery time Osculati 43.070.23 is a high-performance aluminium sacrificial anode designed to replace Side Power parts 71190 and 51180. Engineered for thruster models SP55S, SP75T, SP95T, SE60/185S, SE80/185T, and SE100, this anode delivers robust protection against galvanic corrosion in saltwater and brackish conditions. Its precise design ensures perfect fitment and easy installation without modifications, providing long-term protection with reduced environmental impact.
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$ 25,74
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1-2 weeks delivery time Osculati 43.070.22 is a high-purity zinc sacrificial anode compatible with Side Power bow thruster models SP55S, SP75T, SP95T, SE60/185S, SE80/185T, and SE100. Equivalent to OEM references 71190 and 51180, it offers reliable protection from galvanic corrosion in saltwater environments. Designed for easy installation, the anode features a precision-machined profile that ensures seamless fitment and long-lasting performance.
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$ 30,76
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1-2 weeks delivery time Osculati 43.070.02 is a replacement zinc anode designed specifically for Vetus BOW 25 bow thrusters. Fully compatible with original Vetus reference 0148, this compact anode delivers essential corrosion protection in saltwater conditions. Its compact size and factory-fit geometry ensure quick replacement and consistent shielding of vital underwater components from galvanic degradation.
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$ 53,35
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1-2 weeks delivery time Osculati 43.070.04 is a zinc sacrificial anode designed as a direct replacement for Vetus bow thrusters BOW 35 and BOW 55, matching original reference 0149. Built to OEM dimensions, this anode protects critical metal parts from galvanic corrosion in saltwater conditions. Its compact, pre-drilled design ensures quick installation and uninterrupted shielding of internal thruster components.
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$ 63,25
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1-2 weeks delivery time Osculati 43.070.06 is a zinc sacrificial anode developed for Vetus BOW 75, BOW 80, and BOW 95 thruster systems, replacing original part 0150. Designed for operation in saltwater, this anode provides vital galvanic protection to prevent corrosion of exposed thruster components. It matches OEM geometry for effortless installation and consistent protection of your propulsion system.
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$ 69,86
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1-2 weeks delivery time Osculati 43.070.08 is a zinc sacrificial anode specifically designed for Vetus BOW 125, BOW 133, and BOW 160 thruster systems, replacing OEM reference 0151. Intended for use in saltwater environments, this anode ensures reliable galvanic protection for high-power thruster units. It features a robust construction and precise dimensions for quick installation and uninterrupted defense of key metal components.
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$ 36,22
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1-2 weeks delivery time Osculati 43.070.12 is a zinc sacrificial anode that replaces Vetus part 0153, suitable for bow thruster models BOW 23A, BOW 50, BOW 80, and various Vetus stern propellers. Designed for effective operation in saltwater, it offers comprehensive galvanic protection for both thruster and stern drive components. The anode features a universal mounting interface and is manufactured to OEM dimensions for direct-fit replacement.
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$ 31,23
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1-2 weeks delivery time Osculati 43.516.00 is a zinc ogive-type sacrificial anode that replaces Volvo Penta QL part 41100098, specifically designed for QL series bow thrusters. Its streamlined ogive shape minimizes hydrodynamic drag while ensuring optimal galvanic protection for the thruster unit. Intended for use in saltwater conditions, this anode delivers long-lasting defense against corrosion of exposed metal components.
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$ 23,30
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1-2 weeks delivery time Osculati 43.070.20 is a universal aluminium anode compatible with both Volvo Penta QL and Side Power SP-SE 30/40 bow thrusters using OEM reference 61180. Manufactured for superior performance in salt and brackish water, it delivers effective galvanic protection for compact thruster systems. The precision-cast shape and pre-drilled design allow for fast, direct-fit replacement without modifications.
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$ 31,83
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1-2 weeks delivery time Osculati 43.005.01 is a 2.5 kg zinc anchoring anode designed to protect boats and metal anchoring equipment from galvanic corrosion while moored. Supplied with an integrated fastening cable, it provides simple and secure attachment to metal structures such as anchor chains, hulls, or propeller shafts. Ideal for temporary or permanent anti-corrosion protection in saltwater environments.
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$ 186,11
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1-2 weeks delivery time Osculati 43.920.01 is a 1.2 kg bolt-on zinc plate anode measuring 147×65×22 mm, designed for effective hull or metal surface protection against galvanic corrosion. Fitted with a rubber insulating plate, it minimizes vibration and prevents metal-to-metal contact. Ideal for fixed installation on hulls, trim tabs, or brackets in saltwater environments.
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$ 59,61
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1-2 weeks delivery time Osculati 43.920.02 is a 1.5 kg zinc bolt-on plate anode with rubber backing, sized 151×95×26 mm. Designed for permanent hull or appendage protection in saltwater, it includes two elongated 13×35 mm mounting holes spaced at 75 mm, ensuring quick alignment and strong mechanical fastening. The insulating rubber pad reduces vibration and enhances durability on metal structures.
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$ 91,24
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1-2 weeks delivery time Osculati 43.920.03 is a heavy-duty 2.5 kg zinc bolt-on plate anode with a vibration-damping rubber pad, measuring 200×80×22 mm. Designed for fixed protection of hulls, stern plates, and metal appendages in saltwater, it features two elongated 13×35 mm mounting holes spaced at 110 mm. Ideal for medium and large vessels requiring long-lasting galvanic protection.
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$ 126,34
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1-2 weeks delivery time Osculati 43.920.04 is a heavy-duty zinc bolt-on plate anode with integrated rubber backing, weighing 4.18 kg and sized 210×160×32 mm. Designed for large hulls, rudders, transoms, and structural underwater components, it features two 19×25 mm elongated holes spaced at 110 mm. The included rubber pad reduces vibration and improves corrosion protection in saltwater conditions.
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$ 204,58
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1-2 weeks delivery time Osculati 43.920.06 is a high-capacity zinc bolt-on plate anode weighing 8 kg, specifically engineered for large hulls, keels, stern plates, and underwater structures exposed to aggressive saltwater corrosion. With dimensions of 300×160×28 mm and two pre-drilled 17×25 mm holes spaced at 160 mm, it ensures stable mechanical fixing and effective long-term galvanic protection.
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$ 340,39
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1-2 weeks delivery time Osculati 43.223.12 is a zinc ogive anode designed for Flexofold folding propellers with 2, 3, or 4 blades up to 23". With dimensions Ø 69 × 37 mm, this ogive-shaped anode (OEM ref. 112) ensures precise fitment and low-drag protection for rotating assemblies exposed to saltwater. Ideal for sailing yachts equipped with Flexofold propellers.
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$ 45,65
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1-2 weeks delivery time Osculati 43.223.14 is a pair of zinc side anodes designed for Flexofold 2-blade folding propellers, matching OEM reference 114. With dimensions Ø32 × 13 mm, these compact anodes provide targeted corrosion protection at the blade hinges and pivot zones, ensuring long-term durability of the propeller in saltwater environments.
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$ 41,68
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1-2 weeks delivery time Osculati 43.224.75 is a zinc collar anode specifically designed for Max-Prop feathering propellers. Installed around the propeller hub or shaft, this collar offers direct galvanic protection for rotating components vulnerable to corrosion in saltwater. Engineered to fit snugly without interfering with propeller function, it’s a key element for maintaining the integrity of Max-Prop systems.
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$ 72,47
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1-2 weeks delivery time Osculati 43.907.06 is a 3 kg rectangular anode made of galvanized iron, specifically designed for welding onto metal hulls or structural underwater elements. With dimensions 215×90×30 mm and an internal insert for structural stability, it offers long-lasting cathodic protection for steel vessels in saltwater applications.
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$ 152,58
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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.