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Hydrofoil Stabilizer - Fits Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki, Tohatsu 8-40 HP (Replaces SE200, FO2002)

Regular price $63.60

Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

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

Product Details

This Sea Sierra Whale Tail Hydrofoil Stabilizer is designed for 8-40 HP outboard motors, compatible with both 2-stroke and 4-stroke engines. It enhances performance by improving handling, providing better maneuverability, cutting planing time, and helping maintain plane at lower speeds. This hydrofoil is a direct mount to the anti-cavitation plate and is constructed from UV-resistant marine-grade nylon.

This part directly replaces SeaSierra FO2002, NorthBoat FO2003, SE Sport SE200, StingRay Classic JR2, and UanofCn FO2002.

  • Installation is a bolt-on process that requires drilling.
  • Made from high-strength, UV-resistant Marine Grade Nylon PA66 Plastic.
  • Package includes all necessary stainless steel mounting hardware and a drill bit.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
SeaSierra FO2002
NorthBoat FO2003
SE Sport SE200
StingRay Classic JR2
UanofCn FO2002

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke OEM Part No. Notes
Yamaha Outboards 8-40 2- & 4-Stroke FO2002
Mercury Outboards 8-40 2- & 4-Stroke FO2002 Except Mercury 40, 50, 60 four strokes
Johnson Outboards 8-40 2- & 4-Stroke FO2002
Evinrude Outboards 8-40 2- & 4-Stroke FO2002
Honda Outboards 8-40 2- & 4-Stroke FO2002
Suzuki Outboards 8-40 2- & 4-Stroke FO2002
Tohatsu Outboards 8-40 2- & 4-Stroke FO2002

Note: Will also fit most outboards and stern drives larger than 40 HP except Mercury 40, 50, and 60 four strokes. There are also some smaller outboards (down to 4 HP) that it will fit.

Technical Specs

Product Type
Whale Tail Hydrofoil Stabilizer
Installation
Bolt-on (requires drilling)
Connection
Direct mount to anti-cavitation plate
Housing Material
Marine Grade Nylon PA66 Plastic
Housing Color
Blue
Dimensions
13.39" × 13.7" (340mm × 348mm)
Weight
2.94 lbs (1.33 kg)
Fitting Type
Bolted with provided hardware
Warranty
30-day Amazon return policy
Other Technical Attributes
UV-resistant reinforced material

What’s in the Box

  • 1 x Hydrofoil Stabilizer (FO2002)
  • 4 x Sets of Stainless Steel Screws and Nuts
  • 1 x 6.5mm Drill Bit
  • 1 x Installation Instruction

Installation Notes

  1. Ensure the engine is off and the battery is disconnected for safety.
  2. Position the hydrofoil onto the anti-cavitation plate, ensuring it is centered and level.
  3. Use a marker to carefully mark the positions for the four mounting holes through the hydrofoil.
  4. Remove the hydrofoil and use the provided 6.5mm drill bit to drill the marked holes through the cavitation plate.
  5. Place the hydrofoil back onto the plate, aligning it with the newly drilled holes.
  6. Insert the stainless steel screws from the top and secure them with the nuts from the bottom. Tighten all hardware evenly.
  7. Double-check that the hydrofoil is secure and does not move before reconnecting the battery and operating the engine.

Troubleshooting & FAQ

Will this fit my 15 HP outboard?

Yes, this hydrofoil is specifically designed for outboards in the 8-40 HP range, making it an ideal fit for a 15 HP motor. It will also fit some engines as small as 4 HP.

Is drilling required for installation?

Yes, this is a bolt-on hydrofoil that requires drilling four holes into your outboard's anti-cavitation plate. All necessary stainless steel mounting hardware and the correct size drill bit are included in the package.

Will this fit a Mercury 40 HP four-stroke engine?

No. The compatibility notes specifically state that this hydrofoil will not fit Mercury 40, 50, and 60 HP four-stroke models, despite fitting most other outboards in the 8-40 HP range.

What performance benefits can I expect?

This hydrofoil is designed to help your boat get on plane faster, stay on plane at lower speeds (improving fuel efficiency), and enhance overall handling and maneuverability by providing greater stern lift and stability.

What is the hydrofoil made of?

It is constructed from a high-strength, durable Marine Grade Nylon PA66 plastic, which is reinforced and UV-resistant to withstand harsh marine environments.

When should I consider replacing my hydrofoil?

Inspect your hydrofoil regularly for any signs of cracking, significant warping, or physical damage from impacts. If you notice a decline in the performance benefits it once provided, it may be time for a replacement.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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