Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards (Replaces NorthBoat FO2002, UANOFCN 20HS001-Blue, SeaSierra 200HS)
Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards (Replaces NorthBoat FO2002, UANOFCN 20HS001-Blue, SeaSierra 200HS) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboa...
Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards (Replaces NorthBoat FO2002, UANOFCN 20HS001-Blue, SeaSierra 200HS) is backordered and will ship as soon as it is back in stock.
Product Details
This whale tail style Marine Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards is designed for most outboard motors between 8-40 HP. It improves overall boat performance by getting on plane faster, reducing bow rise, and increasing fuel efficiency. Compatibility extends up to 300 HP for many models, with the exception of Mercury 4-stroke 40, 50, and 60 HP engines.
This unit is a direct replacement for NorthBoat FO2002, UANOFCN 20HS001-Blue, and SeaSierra 200HS.
- Bolt-on installation for a secure fit (drill bit included).
- Constructed from tough, reinforced Nylon PA66 plastic for marine durability.
- Helps maintain lower planing speeds for a smoother, more stable ride.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| NorthBoat | FO2002 |
| UANOFCN | 20HS001-Blue |
| SeaSierra | 200HS |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for a wide range of Yamaha outboards, primarily in the 8-40 HP class. Fits most 2-stroke and 4-stroke models.
Fits most Mercury 8-40 HP outboards. Note: This hydrofoil is not compatible with Mercury 4-stroke 40, 50, or 60 HP engines.
Compatible with most Johnson and Evinrude 8-40 HP outboard motors.
| Brand | Model | Rated HP | Stroke | Notes |
|---|---|---|---|---|
| Yamaha | Various | 8-40 HP | 2- & 4-Stroke | Will fit most models |
| Mercury | Various | 8-40 HP | 2- & 4-Stroke | Not compatible with Mercury 4-stroke 40/50/60 HP |
| Johnson/Evinrude | Various | 8-40 HP | 2- & 4-Stroke | Will fit most models |
| Multiple Brands | Various | Up to 300 HP | 2- & 4-Stroke | Excepting Mercury 4-stroke 40/50/60 HP |
Technical Specs
- Product Type
- Hydrofoil Stabilizer (Whale Tail Style)
- Installation
- Bolt-on (includes drill for installation)
- Housing Material
- Reinforced Nylon PA66 Plastic
- Housing Color
- Blue
- Dimensions
- H: 13.5 inches (343 mm), W: 14.0 inches (356 mm)
- Weight
- 3.24 pounds (1.47 kg)
- Warranty
- 1 Year
- Other Technical Attributes
- Maintains lower planning speeds, reduces boat bow rise, increases fuel efficiency
What’s in the Box
- 1 x Hydrofoil Stabilizer (FO2002)
- 1 x Installation Hardware Kit
Installation Notes
- Ensure the engine is off and the boat is securely trailered or docked.
- Position the hydrofoil on the cavitation plate of your outboard motor. Center it and ensure it is level.
- Mark the locations for the bolt holes through the guides on the hydrofoil.
- Remove the hydrofoil and carefully drill the marked holes.
- Re-position the hydrofoil and align the holes.
- Insert the mounting bolts and securely tighten the nuts. Do not overtighten, as this can damage the cavitation plate or hydrofoil.
- After the first use, re-check the hardware to ensure it remains tight.
Troubleshooting & FAQ
What is the primary benefit of installing this hydrofoil?
The main benefits are improved performance and efficiency. It helps the boat get on plane at lower speeds, reduces bow rise for better visibility, minimizes cavitation, and can increase fuel economy.
Will this hydrofoil fit my engine?
This stabilizer is designed for most Yamaha, Mercury, and Johnson/Evinrude outboards from 8-40 HP. It may fit larger engines up to 300 HP, but it is critical to note it is NOT compatible with Mercury 4-stroke 40, 50, or 60 HP models. Always verify fitment before purchasing.
Is drilling required for installation?
Yes, this is a bolt-on hydrofoil that requires drilling holes in the outboard's cavitation plate for a secure installation. All necessary mounting hardware is included.
How do I know if the hydrofoil is working correctly?
After installation, you should notice a significant reduction in the time it takes for your boat to get on plane. You will also experience less bow rise during acceleration and may see improved stability and handling, especially at lower speeds.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
