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FLASHSALE26

Hydrofoil Stabilizer – Fits Marine Outboard and Sterndrive Motors (PA66 Plastic)

Regular price $29.99

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Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


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If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This Hydrofoil Stabilizer is a marine accessory designed for use on compatible outboard and sterndrive applications. Its reinforced PA66 plastic construction helps provide a durable hydrofoil surface for improving planing response, reducing porpoising, and supporting more stable handling when properly matched to the boat and engine.

The stabilizer is an aftermarket product with a bolt-on installation design. It is intended for applications using a suitable cavitation plate; verify the dimensions, shape, clearance, and mounting location of your engine before installation.

  • Designed for compatible marine outboard and sterndrive motors.
  • Made from reinforced PA66 nylon plastic.
  • Bolt-on installation using drilled mounting holes.
  • White finish.

Engine & Model Compatibility

This stabilizer is intended for compatible marine outboard and sterndrive applications. Compatibility cannot be confirmed from horsepower alone. Before ordering, compare the stabilizer with your engine's cavitation plate, including its available mounting area, shape, dimensions, clearance, and ability to accept drilled mounting holes.

Application Compatibility Guidance What to Verify
Marine outboard motors Suitable only where the cavitation plate matches the stabilizer's mounting area and clearance requirements. Plate dimensions, shape, thickness, clearance, and drilling access.
Sterndrive motors Suitable only for compatible sterndrive or outdrive configurations. Available mounting surface, surrounding hardware, and interference with the drive unit.
Specific brands and models No complete model-, year-, serial-number-, or horsepower-specific fitment list is verified for this product. Compare your engine and cavitation plate directly before purchase.

Technical Specs

Product Type
Hydrofoil Stabilizer
Application
Compatible marine outboard and sterndrive motors
Installation
Bolt-on installation requiring drilled mounting holes
Material
Reinforced PA66 nylon plastic
Color
White
Dimensions
Approximately 14 inches wide × 13.5 inches high; confirm the actual mounting area and clearance before installation.
Operating Environment
Marine applications, including freshwater and saltwater use

What’s in the Box

  • 1 × White PA66 hydrofoil stabilizer
  • Mounting hardware, where included with the selected package
  • Drill bit and installation instructions, where included with the selected package

Installation Notes

  1. Review the product dimensions and compare them with the engine's cavitation plate before drilling.
  2. Disconnect the battery and follow the engine and boat manufacturer's safety procedures.
  3. Position the stabilizer on the cavitation plate, ensuring it is centered, level, and clear of surrounding components.
  4. Use the mounting holes as a guide to mark the drilling locations.
  5. Remove the stabilizer and carefully drill the marked holes using the appropriate drill size for the supplied hardware.
  6. Reposition the stabilizer and align the mounting holes.
  7. Install the mounting hardware and tighten it securely without overtightening or deforming the cavitation plate.
  8. Inspect the installation before launching. Test the boat at low speed first and confirm that the stabilizer remains secure and does not interfere with steering or the drive unit.

Troubleshooting & FAQ

Will this fit my specific engine?

Fitment depends on the cavitation plate and surrounding clearance, not horsepower alone. Compare the stabilizer's approximate dimensions and mounting layout with your engine before purchase. A complete model-, year-, or serial-number-specific fitment list is not verified for this product.

What performance benefit should I expect?

A properly matched hydrofoil may help the boat plane more readily, reduce porpoising, and improve stability. Results vary with the hull, engine setup, loading, propeller, speed, and water conditions.

Does installation require drilling?

Yes. This is a bolt-on stabilizer that is installed by drilling mounting holes in a suitable cavitation plate. Confirm that drilling is acceptable for your engine and follow safe installation procedures.

Can it be installed on any outboard or sterndrive motor?

No universal fitment should be assumed. Check the cavitation plate's size, shape, thickness, available clearance, and mounting access before installation.

Is this an OEM part?

No. This is an aftermarket hydrofoil stabilizer made from reinforced PA66 nylon plastic.

How should the stabilizer be maintained?

Rinse the stabilizer and mounting hardware with fresh water after saltwater use. Check the hardware periodically for looseness, corrosion, cracking, or other damage, and do not operate the boat if the stabilizer is loose or damaged.

Safety & Important Information

  • Verify fitment against your actual engine and cavitation plate before drilling or ordering.
  • Do not install the stabilizer if it interferes with steering, trim, propulsion, or other drive components.
  • Use appropriate eye protection and safe drilling practices during installation.
  • Professional installation is recommended if you are unsure about drilling, clearance, or engine compatibility.

About Sea Sierra

  • Marine-Focused Products — We offer aftermarket marine accessories for practical repair, replacement, and upgrade applications.
  • Application-Focused Information — Check the product details and physical fitment requirements before installation.
  • Support — Contact customer support if you need help comparing the product with your engine's mounting area.

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