Anode kits are essential for protecting outboard engines, sterndrives, and other submerged boat components from galvanic corrosion.
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1-2 weeks delivery time The Osculati 43.133.00 is a zinc pencil anode with dimensions 13 × 50 mm, designed specifically for use in BMW marine engine heat exchangers. It protects internal cooling passages from galvanic corrosion caused by saltwater contact. Compact and easy to replace, this anode threads directly into the heat exchanger body to provide continuous sacrificial protection.
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$ 20.40
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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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$ 47.30
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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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$ 43.19
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1-2 weeks delivery time The Osculati 43.651.02 Arneson transmission anode is a 610 g aluminium version engineered to protect propulsion systems from galvanic corrosion. Designed for use with Arneson surface drive units, this lightweight anode provides superior performance in saltwater environments where aluminium is preferred over zinc. It ensures efficient sacrificial protection with minimal drag impact on high-speed craft.
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$ 83.47
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1-2 weeks delivery time The Osculati 43.910.01 is a general-purpose flat zinc anode designed for bolt-on installation on hulls, trim tabs, rudders, and other submerged metal components. Ideal for saltwater applications, it provides reliable galvanic protection and is easy to install using standard marine hardware.
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$ 189.45
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1-2 weeks delivery time The Osculati 43.910.11 is a versatile bolt-on aluminium anode designed for general-purpose cathodic protection on hulls, trim tabs, rudders, and other submerged metal components. Manufactured from high-purity aluminium for superior performance in saltwater and brackish conditions, this anode is ideal for vessels requiring a flat-mount, replaceable corrosion protection solution.
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$ 150.42
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1-2 weeks delivery time The Osculati 43.919.03 bolt-on aluminium rudder blade anode has a 90 mm diameter and 170 g mass, designed for corrosion protection of medium-sized rudders, tabs, and submerged fittings. With a 17 mm profile and pre-drilled Ø31 mm and Ø8.5 mm holes, it offers fast installation and long-lasting performance in saltwater and brackish environments.
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$ 126.99
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1-2 weeks delivery time The Osculati 43.228.29 is a zinc sleeve-type pencil anode designed for Caterpillar 3208 marine engines. With a body diameter of 14 mm, body length of 26 mm, and a 7 mm unthreaded extension, it features a smooth Ø12 mm press-fit stem. Installed in the heat exchanger sleeve, it provides sacrificial protection from internal galvanic corrosion in saltwater-cooled engine systems.
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$ 10.28
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Caterpillar 6L2283 Heat Exchanger Sleeve Pencil Anode Ø10x55+12 mm Thread 1/4'' - Osculati 43.228.30
1-2 weeks delivery time The Osculati 43.228.30 is a zinc pencil anode designed to protect Caterpillar marine engine heat exchangers (OEM ref. 6L2283) from internal galvanic corrosion. Featuring a 10 mm diameter, 55 mm active zinc length, and 12 mm threaded base with a 1/4'' BSP thread, this anode provides reliable performance in saltwater cooling circuits.
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$ 17.26
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1-2 weeks delivery time The Osculati 43.229.13 is a zinc pencil anode specifically designed for Caterpillar marine engines, replacing OEM part 116-7011. Measuring Ø9 × 35 mm with an additional 11 mm threaded section (1/4"), this anode provides essential sacrificial protection to the engine’s heat exchanger by neutralizing galvanic currents in the cooling circuit exposed to seawater.
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$ 23.68
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1-2 weeks delivery time Threaded sleeve pencil anode (Osculati 43.228.00) is designed for protecting heat exchangers in Caterpillar and Bukh marine engines, specifically models using reference 6L-2280. Manufactured with zinc alloy, it features a 12 mm diameter and 40 mm active length plus 10 mm for the threaded base. The 3/8" BSP thread ensures secure installation in heat exchanger sleeves to prevent galvanic corrosion.
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$ 18.25
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1-2 weeks delivery time The Osculati 43.228.91 pencil anode is a threaded zinc insert specifically designed for use in Caterpillar marine engine cooling systems referencing OEM part 6L-2284. With a 14 mm diameter and 32 mm active zinc body plus a 12 mm threaded base (5/16"), it ensures optimal protection against galvanic corrosion in saltwater environments.
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$ 15.95
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1-2 weeks delivery time Osculati 43.229.08 is a zinc pencil anode for Caterpillar marine engines using heat exchanger part reference 6L-3104. It features a 10 mm diameter, 38 mm active zinc body, and a 10 mm threaded section with 7/16" BSP thread. Designed for saltwater protection, this anode prevents galvanic corrosion inside the cooling circuit.
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$ 19.96
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1-2 weeks delivery time The Osculati 43.229.09 is a zinc pencil anode designed for Caterpillar marine engines, replacing OEM part 7E-5076. It features a 16 mm diameter, 41 mm active zinc body, and a 9 mm threaded section with a 7/16'' BSP thread. This anode provides targeted corrosion protection for internal surfaces of marine heat exchangers in saltwater environments.
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$ 17.26
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Caterpillar 6L2283 Heat Exchanger Sleeve Pencil Anode Ø30x64+20 mm Thread 3/4'' - Osculati 43.228.50
1-2 weeks delivery time Osculati 43.228.50 is a heavy-duty zinc pencil anode for Caterpillar marine engine cooling systems. With a large 30 mm diameter and 64 mm active zinc section plus a 20 mm threaded base (3/4'' BSP), it is designed to provide robust protection against galvanic corrosion in high-capacity heat exchangers and saltwater environments.
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$ 37.73
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1-2 weeks delivery time The Osculati 43.229.02 zinc pencil anode is a threaded conical anode designed for VM marine engine heat exchangers. It features a 14 mm diameter and a total length of 30 mm (20+10 mm), with a standard M8 thread for easy installation. Made for direct integration into engine cooling systems, this anode protects critical components from galvanic corrosion during saltwater operation.
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$ 18.50
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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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$ 19.55
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Nanni Diesel & Mercedes Heat Exchanger Zinc Pencil Anode Ø10x17+9 Thread 16x1.5 - Osculati 43.229.04
1-2 weeks delivery time The Osculati 43.229.04 threaded pencil anode is designed for use in Nanni Diesel and Mercedes marine engine cooling systems. Measuring Ø10 mm in diameter with a total length of 26 mm (17+9 mm) and featuring a 16×1.5 mm thread, this zinc anode provides essential galvanic protection inside heat exchangers. Its compact conical design ensures secure fitting and corrosion prevention in saltwater operation environments.
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$ 43.24
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1-2 weeks delivery time Osculati 43.229.06 is a threaded zinc pencil anode with a diameter of 8 mm and a length of 30 mm, fitted with a 1/4'' gas (BSP) male thread. Designed for use in Isoterm heat exchangers, this compact anode offers localized corrosion protection in marine water-cooled systems, helping to extend the life of internal metallic components exposed to seawater.
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$ 40.89
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1-2 weeks delivery time The Osculati 43.229.01 is a zinc pencil anode designed for Bukh marine engine heat exchangers. Measuring Ø12 × 35 mm with Vok thread and M5 connection, it is threaded directly into the cooling system to provide essential sacrificial protection against galvanic corrosion. This anode is a maintenance-critical part for extending the life of internal components exposed to seawater inside the heat exchanger.
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$ 18.79
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What is an outboard engine anode, and how does it protect a motor from galvanic corrosion?
An outboard engine anode is a sacrificial metal component, such as a trim tab anode or shaft anode, designed to protect the motor from galvanic corrosion by attracting corrosive elements in the water. Installed on parts like the motor's ventilation plate, transom bracket, or propeller shaft, the anode corrodes instead of critical engine components, extending the lifespan of the outboard motor, especially in saltwater and brackish environments. Regular anode replacement ensures continuous protection for the boat motor and other submerged parts.
What is the importance of regularly replacing outboard motor anodes for corrosion protection?
Regularly replacing outboard motor anodes is essential to prevent galvanic corrosion, which can damage critical components like the engine, propeller, and transom bracket. Sacrificial anodes, such as bar anodes, trim tab zinc anodes, and ring anodes, corrode instead of the motor, protecting metal parts from deterioration in saltwater, brackish water, and freshwater. Using the correct alloy anode ensures long-term protection for outboards and boat zinc components, extending the engine’s lifespan and maintaining performance.
What factors determine the choice between aluminum, magnesium and zinc anode for boats?
The choice between zinc, aluminum, and magnesium anodes depends on the water environment where the boat operates. Zinc anodes are ideal for saltwater, aluminum anodes provide effective protection in both saltwater and brackish water, while magnesium anodes are best suited for freshwater. Using the correct anode ensures that essential components like outboard engines, transom brackets, and skegs are protected from galvanic corrosion, extending the lifespan of boat anodes and motor parts.
Additionally, proper maintenance of the cooling system, including timely Honda Impeller Replacement, helps prevent overheating and ensures efficient engine operation.