Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002, FO002)
Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002, FO002) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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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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Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Rep...
Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Replaces FO2002, FO002) is backordered and will ship as soon as it is back in stock.
Product Details
The Sea Sierra Whale Tail Hydrofoil Surfboard Stabilizer is a marine-grade hydrofoil designed to improve performance and handling. It fits most outboard motors and stern drives from 8 to 40 HP, with universal compatibility for both 2-Stroke and 4-Stroke engines. It also fits many outboards and stern drives larger than 40 HP, with the exception of Mercury 4-Stroke 40HP, 50HP, and 60HP models.
This unit serves as a direct replacement for SeaSierra part numbers FO2002 and FO002.
- Installs directly onto the anti-cavitation plate using the provided hardware.
- Constructed from durable, marine-grade Nylon PA66 plastic for longevity.
- Package includes all necessary stainless steel mounting hardware and a 6.5mm drill bit.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| SeaSierra | FO2002 |
| SeaSierra | FO002 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Universal | All Small Outboards | 8-40 | 2-Stroke & 4-Stroke | FO2002 | |
| Universal | All Outboards/Sterndrives >40 HP | >40 | 2-Stroke & 4-Stroke | FO2002 | Except Mercury 4-Stroke 40HP, 50HP, 60HP |
Technical Specs
- Product Type
- Hydrofoil Stabilizer
- Installation
- Transom Mount (Anti-Cavitation Plate)
- Fuel Type
- Compatible with All Fuels
- Connection
- Direct Mount with Provided Hardware
- Housing Material
- Marine Grade Nylon PA66 Plastic
- Housing Color
- Available in Blue or Silver
- Dimensions
- H: 13.39 inches (340 mm) × W: 13.7 inches (348 mm)
- Weight
- 2.94 pounds (1.33 kg)
- Fitting Type
- Outboard/Sterndrive Mount
- Thread Size
- Uses Provided 6.5mm Drill Bit and Hardware
- Other Technical Attributes
- Crescent-shaped surface designed to channel water efficiently
What’s in the Box
- 1 × Hydrofoil Stabilizer (FO2002)
- 4 × Sets Stainless Steel Screws and Nuts
- 1 × 6.5mm Drill Bit
- 1 × Installation Instruction
Installation Notes
- Disconnect the engine's battery for safety before beginning installation.
- Center the hydrofoil on the anti-cavitation plate of your outboard or stern drive.
- Use a pencil or marker to mark the positions for the four mounting holes.
- Carefully drill the marked holes using the provided 6.5mm drill bit.
- Position the hydrofoil and fasten it securely using the included stainless steel screws and nuts.
- Ensure all hardware is tightened evenly and firmly. Do not overtighten to avoid damaging the plate.
- Reconnect the battery and test your boat's performance on the water.
Troubleshooting & FAQ
How do I know if this hydrofoil will fit my motor?
This hydrofoil offers universal compatibility for most outboard and stern drive motors from 8 to 40 HP. It also fits many larger engines but explicitly excludes Mercury 4-Stroke models in the 40HP, 50HP, and 60HP range. To ensure a proper fit, measure your anti-cavitation plate and compare it to the hydrofoil's dimensions of 13.39 x 13.7 inches before ordering.
What are the benefits of installing a hydrofoil?
A hydrofoil helps your boat get on plane faster, reduces porpoising and cavitation, improves handling and stability, and can increase fuel efficiency at cruising speeds by providing hydrodynamic lift at the stern.
Is drilling required for installation?
Yes, installation requires drilling four holes into your engine's anti-cavitation plate. The package includes a 6.5mm drill bit and all necessary stainless steel mounting hardware to complete the job.
What is the difference between the blue and silver color options?
The color is purely cosmetic. Both options are manufactured from the same high-strength Marine Grade Nylon PA66 plastic and offer identical performance and durability.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It has been built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency.
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 issues arise, contact support with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. Please see our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against 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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