Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces NorthBoat FO2002, SeaSierra 200 Whale Tail, UanofCn FO2002)
Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces NorthBoat FO2002, SeaSierra 200 Whale Tail, UanofCn FO2002) 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 Outboard Motors 8-40 HP (Replaces North...
Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces NorthBoat FO2002, SeaSierra 200 Whale Tail, UanofCn FO2002) is backordered and will ship as soon as it is back in stock.
Product Details
This Whale Tail Hydrofoil Stabilizer is a universal aftermarket performance enhancement for outboard motors and stern drives in the 8-40 HP range. Constructed from durable marine-grade nylon, it helps improve boat handling, reduces porpoising, and decreases planing time for a smoother, more efficient ride.
This part is a direct replacement for NorthBoat FO2002, SeaSierra 200 Whale Tail, and UanofCn FO2002.
- Mounts directly to the anti-ventilation plate with included stainless steel hardware.
- Features a "Turbo Trac" design for enhanced turning precision and stability.
- Available in multiple colors (Black/Red/Blue) to match your engine aesthetic.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| NorthBoat | FO2002 |
| SeaSierra | 200 Whale Tail |
| UanofCn | FO2002 |
Engine & Model Compatibility
Confirm your engine model and year in the table below. Note that compatibility is based on the specified horsepower range.
| Brand | Model | Rated HP | Type / Stroke | Notes |
|---|---|---|---|---|
| Mercury/Mariner | Various Models | 8-40 | 2- & 4-Stroke | Will fit most outboards in the HP range, except for Mercury 40-60 HP Four Stroke models. |
| Yamaha | Various Models | 8-40 | 2- & 4-Stroke | Compatible with most models in the specified HP range. |
| Johnson/Evinrude | Various Models | 8-40 | 2- & 4-Stroke | Compatible with most models in the specified HP range. |
| Suzuki | Various Models | 8-40 | 2- & 4-Stroke | Compatible with most models in the specified HP range. |
| Honda | Various Models | 8-40 | 2- & 4-Stroke | Compatible with most models in the specified HP range. |
| MerCruiser | Various Models | All | Stern Drive | Compatible with most sterndrives. |
| Volvo Penta | SX-A, DPS, DPR, DPH, 280, 290 Series | All | Stern Drive | Requires additional longer bolts and one fender washer per bolt (not included). |
| Volvo Penta | Ocean Series XDP | All | Stern Drive | Not compatible. |
Technical Specs
- Product Type
- Hydrofoil Stabilizer
- Installation
- Mounts to anti-ventilation plate
- Connection
- Bolt-on with included hardware
- Housing Material
- Marine Grade Nylon PA66 Plastic
- Housing Color
- Black/Red/Blue (color options)
- Dimensions
- 14.4 in × 17 in (365.8 mm × 431.8 mm)
- Weight
- 1.41 kg (3.1 lbs)
- Fitting Type
- Bolt-on
- Thread Size
- Uses included stainless steel screws and nuts
- Other Technical Attributes
- "Turbo Trac" design for enhanced turning precision
What’s in the Box
- 1 × Hydrofoil Stabilizer
- 4 × Sets of stainless steel screws and nuts
- 1 × 6.5mm Drill Bit
- 1 × Installation Instructions
Installation Notes
- Ensure the engine is off and the battery is disconnected for safety.
- Position the hydrofoil stabilizer onto the anti-ventilation (cavitation) plate, ensuring it is centered.
- Use a marker to carefully mark the four drill hole locations on the plate through the hydrofoil.
- Remove the hydrofoil and use the included 6.5mm drill bit to drill the marked holes.
- Place the hydrofoil back onto the plate, align the holes, and insert the stainless steel screws from the top.
- Secure each screw with the corresponding nuts from the bottom and tighten firmly. Do not overtighten to avoid cracking the plate or hydrofoil.
- Once installed, check that all hardware is secure before reconnecting the battery and testing on the water.
Troubleshooting & FAQ
How do I know if this hydrofoil will fit my motor?
This stabilizer is designed for a universal fit on outboard motors and stern drives from 8 to 40 horsepower. Please check the compatibility table for specific brand notes. It will not fit Mercury 40-60 HP Four Stroke models or Volvo Penta Ocean Series XDP drives.
What is the benefit of the "Turbo Trac" design?
The "Turbo Trac" contouring helps to control prop wash and turbulence, which enhances thrust and tracking. This results in more precise turning control and improved stability, especially at speed.
Do I need special tools for installation?
The package includes the necessary stainless steel mounting hardware and a 6.5mm drill bit. You will need a power drill and wrenches to tighten the nuts and bolts. Professional installation is always recommended for best results.
What are the signs I need to replace my hydrofoil?
Inspect your hydrofoil for visible cracks, stress fractures, or any signs of warping or damage, especially around the mounting points. A damaged hydrofoil can negatively affect performance and may become a safety hazard if it fails.
Is this an OEM or aftermarket part?
This is a high-quality aftermarket replacement part, not an original equipment manufacturer (OEM) component. It has been engineered to meet or exceed OEM specifications for fit and performance and is produced in an ISO 9002 certified facility.
What are your shipping speed and cost?
We ship worldwide. Typical transit time is 5–15 days for most regions. Standard shipping is free, and expedited options are available at checkout where applicable.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page for full details.
Safety & Important Info
- Verify images and specifications against your original part before purchasing. If anything is different—even if your model is listed as compatible—do not complete the purchase.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is recommended for safety and optimal performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions with a typical transit time of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
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.
