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 Osculati 43.261.00 is a zinc washer-type anode measuring 21×10 mm, designed for outboards from Suzuki (OEM 55321-87J00), Evinrude, and OMC. Installed on bolts or propshafts, this compact sacrificial anode prevents galvanic corrosion in saltwater by protecting nearby aluminium or steel components. Its small form factor allows targeted protection in vulnerable areas.
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$ 7.56
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1-2 weeks delivery time Osculati 43.261.01 is an aluminium washer-type anode measuring 21×10 mm, compatible with Suzuki (OEM 55321-87J00), Evinrude, and OMC outboards. Designed for bolt or propshaft installation, it provides focused corrosion protection in brackish and freshwater environments. Aluminium ensures efficient electrochemical performance without overreactivity, making it ideal for transitional waters.
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$ 5.11
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1-2 weeks delivery time Osculati 43.261.02 is a high-reactivity magnesium washer-type anode with 21×10 mm dimensions, compatible with Suzuki (OEM 55321-87J00), Evinrude, and OMC outboards. Ideal for freshwater environments, it offers maximum electrochemical protection for bolts, shafts, and small submerged hardware. Its lightweight construction ensures targeted, fast-acting defense against galvanic corrosion.
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$ 9.65
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1-2 weeks delivery time The Osculati 43.823.91 zinc washer anode (Ø 20×7 mm) is a compact anti-corrosion component compatible with Tohatsu (338-60218-2), Suzuki (11130-94600), Evinrude, OMC, and Selva outboards. Designed for internal or shaft-based protection, this small-format anode delivers targeted sacrificial action in saltwater environments, preserving key engine fittings and cooling system parts.
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$ 13.88
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1-2 weeks delivery time The Osculati 43.823.92 aluminium washer anode (Ø 20×7 mm) is a high-efficiency anti-corrosion solution compatible with Mercury (823912), Tohatsu (338-60218-2), Suzuki (11130-94600), and selected Evinrude, OMC, and Selva engines. Designed for use on shafts or threaded fasteners, this cadmium-free aluminium anode is ideal for saltwater and brackish water applications where lightweight and long-lasting protection is required.
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$ 11.28
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1-2 weeks delivery time The Osculati 43.823.93 magnesium washer anode (Ø 20×7 mm) is designed for freshwater applications and is compatible with Suzuki (11130-94600), as well as selected Evinrude, OMC, and Selva outboards. Made from highly reactive magnesium alloy, this compact washer-type anode offers superior cathodic protection for shafts, fasteners, and cooling system fittings in low-conductivity environments.
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$ 14.66
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1-2 weeks delivery time The Osculati 43.317.24 aluminium anode is designed for Evinrude G2 outboard engines from 200 to 300 HP. Made of a marine-grade Al-Zn-In alloy, it offers superior galvanic protection in saltwater and brackish environments. With precise OEM-style dimensions and pre-drilled mounting holes, this anode ensures a direct fit without modifications. Its compact and robust construction helps maintain the longevity of critical engine parts exposed to electrolysis and corrosion.
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$ 22.08
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1-2 weeks delivery time The Osculati 43.317.27 aluminium ogive anode is designed specifically for Evinrude G2 200–300 HP outboards. Featuring a streamlined bullet-shaped profile, this anode minimizes hydrodynamic drag while delivering high-efficiency cathodic protection in saltwater and brackish environments. Manufactured from a premium Al-Zn-In alloy and built to OEM specifications, it offers a perfect fit and long-lasting protection for key lower unit components.
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$ 28.74
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1-2 weeks delivery time The Osculati 43.317.30 aluminium plate anode is specifically crafted for Evinrude G2 outboards rated between 200 and 300 HP. Built from a high-performance aluminium alloy (Al-Zn-In), it provides robust corrosion protection in saltwater and brackish water conditions. Designed to match original equipment dimensions, this flat plate-style anode is easily mounted on the transom or gearcase surfaces, ensuring uniform sacrificial wear for extended engine life.
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$ 15.07
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1-2 weeks delivery time The Osculati 43.317.41 aluminium anode kit is a complete OEM-compatible set tailored for Evinrude G2 200–300 HP ETEC-GE outboards. It includes four precision-cast aluminium anodes (items 43.316.34, 43.317.24, 43.317.27, and 43.317.30), each designed for targeted corrosion protection of the engine’s lower unit, gearcase, and transom areas. Made from Al-Zn-In alloy, this kit provides optimal sacrificial performance in saltwater and brackish environments, while ensuring a streamlined fit and simple installation.
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$ 98.14
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1-2 weeks delivery time The Osculati 43.172.64 is a leg anode specifically designed for Mercury and Mariner outboard engines in the 50–75 HP range. Fully compatible with OEM reference 17264, it provides vital protection against galvanic corrosion for engine legs operating in salt or brackish water. Manufactured to precise standards for a perfect fit and long service life.
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$ 49.32
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1-2 weeks delivery time The Osculati 43.426.10 outboard leg anode is designed for 50 HP 4-stroke outboard engines, offering effective protection against galvanic corrosion in saltwater environments. This anode is mounted on the lower unit (leg) of the engine and is made from high-quality zinc alloy, ensuring long-lasting performance. Suitable for a wide range of outboard brands and models with compatible geometry, it helps protect vital underwater metal components and extends the engine’s lifespan.
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$ 38.04
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1-2 weeks delivery time The Osculati 43.426.20 zinc leg anode is a direct-fit replacement for Mercury outboards from 50 to 140 HP, referencing OEM part 46399. Designed to protect the lower unit ("leg") against galvanic corrosion, this anode is manufactured from high-purity zinc alloy for maximum effectiveness in saltwater environments. Its form ensures full surface contact with the gearcase for consistent protection and simple bolt-on installation.
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$ 34.18
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1-2 weeks delivery time The Osculati 43.423.00 zinc flat fin anode is designed for MerCruiser Alpha and Bravo sterndrives ranging from 35 to 300 HP. Equivalent to OEM part 806105, this anode protects the lower unit and steering components against galvanic corrosion in saltwater conditions. Its flat-profile fin ensures proper hydrodynamic performance while delivering effective sacrificial protection.
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$ 31.60
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1-2 weeks delivery time The Osculati 43.423.11 is an aluminium flat fin anode designed for MerCruiser Alpha and Bravo sterndrives rated from 35 to 300 HP. Equivalent to OEM part 806105, it provides lightweight, long-lasting corrosion protection for the lower unit and steering components in saltwater and brackish environments. The flat-profile design maintains hydrodynamic efficiency while ensuring full sacrificial performance.
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$ 20.73
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1-2 weeks delivery time The Osculati 43.423.12 is a magnesium flat fin anode made for MerCruiser Alpha and Bravo sterndrives in the 35–300 HP range. Replacing OEM part 806105, it delivers aggressive corrosion protection in freshwater conditions. Its lightweight magnesium alloy offers superior reactivity compared to zinc or aluminium, ideal for protecting lower unit and steering gear in lakes and rivers.
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$ 32.90
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1-2 weeks delivery time The Osculati 43.423.01 is a zinc flat fin anode compatible with MerCruiser Bravo sterndrives. Equivalent to OEM part 762144, it offers effective protection for lower unit components exposed to saltwater. Its flat hydrodynamic design ensures minimal drag while maintaining full sacrificial functionality to prevent galvanic corrosion.
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$ 33.38
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1-2 weeks delivery time The Osculati 43.423.20 aluminium flat fin anode is a lightweight, OEM-equivalent corrosion protection component for MerCruiser Bravo sterndrives. Replacing part 762144, this anode offers excellent performance in saltwater and brackish conditions. Its flat fin design maintains hydrodynamic integrity while preventing galvanic damage to lower units and steering assemblies.
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$ 21.70
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1-2 weeks delivery time The Osculati 43.423.21 – Mercruiser 762144 Bravo Magnesium Flat Fin Anode is specifically designed for use on Mercruiser Bravo sterndrives in freshwater environments. Cast from high-purity magnesium for maximum electrochemical activity, this flat fin anode ensures optimal cathodic protection of your sterndrive’s lower unit. It replaces OEM part number 762144 and is ideal for preventing galvanic corrosion in low-conductivity waters. Dimensions and mounting align precisely with the original Mercruiser specifications.
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$ 28.59
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1-2 weeks delivery time The Osculati 43.822.15 zinc fin anode is a direct replacement for Mercury outboards from 25 to 50 HP, both 2-stroke and 4-stroke, using OEM part 822157-C2. Designed to mount under the cavitation plate, this anode combines galvanic protection with steering torque compensation. Constructed from marine-grade zinc, it is ideal for saltwater use and ensures long-lasting protection against corrosion.
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$ 58.86
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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.