Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002)
Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002) is backordered and will ship as soon as it is back in stock.
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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.
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Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002)
Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002) is backordered and will ship as soon as it is back in stock.
Product Details
This compact Whale Tail Hydrofoil Stabilizer is a performance-enhancing hydrofoil designed for small to mid-sized outboard motors and stern drives. It fits most outboards from 8–40 HP and can work with larger motors up to 300 HP, though some exceptions apply (notably certain Mercury 4-stroke models).
This part is a direct replacement for SeaSierra FO2002, UanofCn FO2002, and NorthBoat FO2002.
- Installs via bolt-on mounting to the anti-ventilation plate (drilling is required).
- Constructed from durable, marine-grade reinforced PA66 nylon plastic.
- UV-resistant construction ensures a long service life in marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| SeaSierra | FO2002 |
| UanofCn | FO2002 |
| NorthBoat | FO2002 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits all Mercury models from 8-40 HP, with the exception of 4-Stroke models in the 40, 50, and 60 HP range.
| Brand | Model | Rated HP | Stroke | Notes |
|---|---|---|---|---|
| Yamaha | All models | 8-40 HP | 2- & 4-Stroke | |
| Mercury | All models | 8-40 HP | 2- & 4-Stroke | Except 4-Stroke 40, 50, 60 HP |
| Johnson/Evinrude | All models | 8-40 HP | 2- & 4-Stroke | |
| Honda | All models | 8-40 HP | 4-Stroke | |
| Suzuki | All models | 8-40 HP | 2- & 4-Stroke | |
| Tohatsu | All models | 8-40 HP | 2- & 4-Stroke | |
| Various | Other models | Up to 300 HP | 2- & 4-Stroke | Except Mercury 4-Stroke 40, 50, 60 HP |
Technical Specs
- Product Type
- Whale Tail Hydrofoil Stabilizer
- Installation
- Bolt-on with included hardware (drilling required)
- Connection
- Anti-Ventilation Plate Mount
- Housing Material
- Marine Grade Reinforced Nylon PA66 Plastic
- Housing Color
- Available in Blue, Red, Silver
- Dimensions
- 13.5" × 14.0" (343 × 355 mm)
- Weight
- 3.24 lbs (1.47 kg)
- Fitting Type
- Direct mount to anti-ventilation plate
- Other Technical Attributes
- UV-resistant construction
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 Manual
Installation Notes
- Position the hydrofoil on the anti-ventilation plate, ensuring it is centered and does not interfere with the propeller's movement.
- Mark the positions for the four mounting holes using the hydrofoil as a template.
- Carefully drill the four marked holes through the anti-ventilation plate using the included 6.5mm drill bit.
- Secure the hydrofoil to the plate by inserting the stainless steel screws from the top and tightening the nuts from below. Ensure a firm, snug fit.
Troubleshooting & FAQ
Will this fit my 50 HP Mercury 4-Stroke?
No, this hydrofoil is not compatible with Mercury 4-Stroke motors of 40, 50, or 60 HP. It fits most other outboards from 8-40 HP and can work on some larger engines up to 300 HP. Always verify compatibility before purchasing.
Does this require drilling into my engine?
Yes, installation requires drilling four holes into the anti-ventilation plate of your outboard motor. All necessary mounting hardware, including a drill bit, is included in the package to complete the process.
What performance benefits can I expect?
A properly installed hydrofoil helps your boat get on plane faster, which can improve fuel efficiency. It also reduces or eliminates porpoising and cavitation while enhancing overall stability and handling at cruising speeds.
How do I maintain the hydrofoil?
The hydrofoil is made of UV-resistant, marine-grade plastic and requires minimal maintenance. Periodically check that the mounting bolts are secure and rinse the unit with fresh water after use in saltwater environments to prevent corrosion of the hardware.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency and quality.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available.
Warranty & returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, 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 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 quality control.
Payment & Security
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