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.

147 products

  • Tecnoseal

    Tecnoseal X5 Shaft Anode - Zinc - 1-1/4" Shaft Diameter [X5]

    Regular price $11.33 USD
    Sale price $11.33 USD Regular price $0.00 USD

    Shaft AnodeMaterial: ZincOuter Diameter: 2.27"Inner Diameter: 1.25"Height: 2.52"Weight: 1.09lbsHoles: 2 Specifications: Material: Zinc Box Dimensions: 2"H x 2"W x 3"L WT: 1.1 lbs UPC: 8059617812362 Quick...

  • Tecnoseal

    Tecnoseal X2 Shaft Anode - Zinc - 7/8" Shaft Diameter [X2]

    Regular price $9.80 USD
    Sale price $9.80 USD Regular price $0.00 USD

    Shaft AnodeMaterial: ZincOuter Diameter: 2.14"Inner Diameter: 0.87"Height: 2.02"Weight: 0.97lbsHoles: 2 Specifications: Material: Zinc Box Dimensions: 2"H x 2"W x 2"L WT: 1 lbs UPC: 8059617812188 Quick...

  • Save $0.31 USD
    Tecnoseal

    Tecnoseal R4MG Rudder Anode - Magnesium - 5" x 5/8" [R4MG]

    Regular price $44.99 USD
    Sale price $44.99 USD Regular price $45.30 USD

    Rudder AnodeMaterial: MagnesiumOuter Diameter: 5"Height: 0.60"Weight: 0.78lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Tecnoseal

    Tecnoseal R5AL Rudder Anode - Aluminum - 5" x 7/8" [R5AL]

    Regular price $40.99 USD
    Sale price $40.99 USD Regular price $0.00 USD

    Rudder AnodeMaterial: AluminumOuter Diameter: 5"Height: 0.89"Weight: 1.73lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut...

  • Performance Metals

    Performance Metals Yamaha Trim Tab Anode 150-200hp Counter Rotating [00181A]

    Regular price $28.51 USD
    Sale price $28.51 USD Regular price $0.00 USD

    Yamaha Trim Tab Anode 150-200hp Counter RotatingUsed on Yamaha 2-stroke LH 150-200hp (1986 and later), 4-stroke LH 150hp (2005 and later).Kit includes mounting hardware and installation...

  • Save $2.69 USD
    Performance Metals

    Performance Metals Mercruiser Bravo 1 Bearing Cavity [00048A]

    Regular price $12.99 USD
    Sale price $12.99 USD Regular price $15.68 USD

    Mercruiser Bravo 1 Bearing CavityPerformance Metals Navalloy® aluminum anodes are manufactured to the military specification MIL-DTL 24779 and are suitable for use in all water types-...

  • Performance Metals

    Performance Metals Yamaha Trim Tab Anode - 150-225 hp - Aluminum [00125A]

    Regular price $28.51 USD
    Sale price $28.51 USD Regular price $0.00 USD

    Yamaha Trim Tab Anode - 150-225 hp - AluminumUsed on Yamaha 2-stroke outboards: 150 hp (1988 and later), 175-200 hp (1988 and later), 225 hp (1990-1993)....

  • Save $2.92 USD
    Performance Metals

    Performance Metals 3-3/4" Rudder/Trim Tab Anode - Zinc [R3750Z]

    Regular price $17.99 USD
    Sale price $17.99 USD Regular price $20.91 USD

    3-3/4" Rudder/Trim Tab Anode - ZincAluminum trim tab or rudder anode with 2 halves and stainless steel hardware. Nuts are pressed into the casting.Performance Metals Navalloy® aluminum...

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