Collection: Antifouling Systems

Protect what’s below the waterline.

Explore marine antifouling systems, sacrificial anodes and corrosion-protection products designed to help protect critical underwater components and maintain your vessel season after season.

Shop boat anodes, zinc anodes, aluminum anodes, magnesium anodes, shaft anodes, propeller anodes, trim-tab anodes and marine antifouling equipment for sailboats, powerboats, yachts and other marine applications.

Whether you're replacing worn sacrificial anodes, maintaining underwater running gear or preparing your boat for another season in the water, Roam & Harbor makes it easier to find essential products for protecting your vessel below the waterline.

From routine maintenance to long-term vessel care, choosing the appropriate corrosion and fouling protection for your boat and operating environment is an important part of keeping underwater systems maintained and ready for the water.

Protect below the waterline. Preserve the adventure.

146 products

  • Tecnoseal

    Tecnoseal R4AL Rudder Anode - Aluminum - 5" x 5/8" [R4AL]

    Regular price $22.99 USD
    Sale price $22.99 USD Regular price $0.00 USD

    Rudder AnodeMaterial: AluminumOuter Diameter: 5"Height: 0.60"Weight: 1.22lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R3AL Rudder Anode - Aluminum - 3-3/4" Diameter [R3AL]

    Regular price $14.52 USD
    Sale price $14.52 USD Regular price $0.00 USD

    Rudder AnodeMaterial: AluminumOuter Diameter: 3.63"Height: 0.52"Weight: 0.61lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R2AL Rudder Anode - Aluminum - 2-13/16" Diameter [R2AL]

    Regular price $8.47 USD
    Sale price $8.47 USD Regular price $0.00 USD

    Rudder AnodeMaterial: AluminumOuter Diameter: 2.84"Height: 0.43"Weight: 0.34lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R1AL Rudder Anode - Aluminum - 1-7/8" Diameter [R1AL]

    Regular price $3.63 USD
    Sale price $3.63 USD Regular price $0.00 USD

    Rudder AnodeMaterial: AluminumOuter Diameter: 1.85"Height: 0.28"Weight: 0.10lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R4 Rudder Anode - Zinc - 5" Diameter x 5/8" Thickness [R4]

    Regular price $29.15 USD
    Sale price $29.15 USD Regular price $0.00 USD

    Rudder AnodeMaterial: ZincOuter Diameter: 5"Height: 0.60"Weight: 3.10lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R3 Rudder Anode - Zinc - 3-3/4" Diameter [R3]

    Regular price $15.16 USD
    Sale price $15.16 USD Regular price $0.00 USD

    Rudder AnodeMaterial: ZincOuter Diameter: 3.63"Height: 0.52"Weight: 1.56lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R2 Rudder Anode - Zinc - 2-13/16" Diameter [R2]

    Regular price $9.68 USD
    Sale price $9.68 USD Regular price $0.00 USD

    Rudder AnodeMaterial: ZincOuter Diameter: 2.84"Height: 0.43"Weight: 0.87lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Save $1.01 USD
    Raritan

    Raritan Magnesium Anode f/6-Gallon Water Heater [1790610]

    Regular price $68.99 USD
    Sale price $68.99 USD Regular price $70.00 USD

    Magnesium Anode for 6-Gallon Water HeaterRaritan's Magnesium Anode is made specifically for Raritan's 6-Gallon Water Heater.Features: 16-1/8" Stainless Steel Fitting WARNING: This product can expose you...

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