Whale Tail Hydrofoil Stabilizer for 8–40 HP Outboards – Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki & Tohatsu (FO2002 Reference)
Whale Tail Hydrofoil Stabilizer for 8–40 HP Outboards – Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki & Tohatsu (FO2002 Reference) 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.
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Whale Tail Hydrofoil Stabilizer for 8–40 HP Outboards – Yamaha, Mer...
Whale Tail Hydrofoil Stabilizer for 8–40 HP Outboards – Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki & Tohatsu (FO2002 Reference) is backordered and will ship as soon as it is back in stock.
Product Details
This Whale Tail Hydrofoil Stabilizer is designed for many 8–40 HP outboard applications from Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki, and Tohatsu. It may also fit many larger outboards, but compatibility depends on the engine model and the available space on the anti-ventilation plate. Always compare the stabilizer dimensions and mounting area before installation.
FO2002 is included as an aftermarket reference associated with this style of hydrofoil. Reference numbers are provided for identification only and should be verified against the original part and mounting dimensions before purchase.
- Made from high-impact, marine-grade Nylon PA66 plastic.
- Requires drilling for a secure, bolted connection to the outboard anti-ventilation plate.
- Includes stainless steel mounting hardware, drill bit, and installation instructions.
Part Number Matrix
Use the following reference to help compare aftermarket listings. Confirm dimensions and mounting details before ordering.
| Reference Brand | Part Number | Reference Status |
|---|---|---|
| SeaSierra | FO2002 | Aftermarket reference; verify before purchase |
| UanofCn | FO2002 | Aftermarket reference; verify before purchase |
| NorthBoat | FO2002 | Aftermarket reference; verify before purchase |
Engine & Model Compatibility
The application range below is a general guide, not a model-specific fitment guarantee. Confirm the exact engine model, year, horsepower, stroke type, and anti-ventilation plate dimensions before installation.
| Brand | Application | Rated HP | Stroke | Notes |
|---|---|---|---|---|
| Yamaha | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
| Mercury | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Not intended for Mercury 40, 50, or 60 HP 4-stroke models listed as exceptions |
| Johnson | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
| Evinrude | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
| Honda | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
| Suzuki | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
| Tohatsu | Many outboard applications | 8–40 | 2-Stroke & 4-Stroke | Verify the specific model and mounting area |
Some larger outboards may also be compatible. The stated exception includes Mercury 40, 50, and 60 HP 4-stroke models. Some smaller outboards may also fit, but a specific application should not be assumed without checking dimensions and clearance.
Technical Specs
- Product Type
- Hydrofoil stabilizer / whale tail
- Installation
- Bolted outboard anti-ventilation-plate mount; drilling required
- Connection
- Four-point bolted connection to the anti-ventilation plate
- Housing Material
- Marine-grade Nylon PA66 plastic
- Dimensions
- 13.39 × 13.7 in. (340 × 348 mm), as listed
- Weight
- 1.4 kg (3.1 lb), as listed
- Fitting Type
- Drilled and bolted installation
- Installation Hardware
- Stainless steel mounting hardware and 6.5 mm drill bit included
What’s in the Box
- 1 × Hydrofoil stabilizer
- 4 × Sets of stainless steel screws and nuts
- 1 × 6.5 mm drill bit
- 1 × Installation instruction manual
Installation Notes
- Turn off the engine and make sure the boat is stable and secure before beginning.
- Center the hydrofoil on the outboard’s anti-ventilation plate.
- Use the mounting holes as a guide to mark the four drilling locations.
- Remove the hydrofoil and carefully drill the marked holes using the included 6.5 mm drill bit.
- Place the hydrofoil back on the plate and align it with the drilled holes.
- Install the supplied stainless steel screws, washers, and nuts, then tighten securely without overtightening.
- After the first use, inspect and re-check all mounting hardware.
Troubleshooting & FAQ
Will this fit my specific outboard model?
The general application range covers many outboards from 8 to 40 HP across the listed brands. Model-specific compatibility is not guaranteed by horsepower alone. Check the anti-ventilation plate dimensions, available clearance, engine model, year, and stroke type before ordering. Mercury 40, 50, and 60 HP 4-stroke models are listed as exceptions.
Is drilling required for installation?
Yes. Installation requires four holes to be drilled in the anti-ventilation plate. The package includes a 6.5 mm drill bit and stainless steel mounting hardware.
How can a hydrofoil improve boat performance?
A hydrofoil can add lift at the stern, which may help reduce bow rise and improve low-speed planing behavior. Actual results vary with the boat, engine, load, trim setting, and water conditions.
What material is this hydrofoil made of?
The stabilizer is made from high-impact, marine-grade Nylon PA66 plastic.
How should the hydrofoil be inspected?
Periodically check for cracks, warping, impact damage, loose fasteners, or damage around the drilled mounting holes. Stop using the product and replace it if structural damage is found.
What tools are needed for installation?
You will need a power drill, wrenches for the mounting nuts, and a marker for positioning the holes. The package includes the 6.5 mm drill bit and mounting hardware.
Is this an OEM component?
No. This is an aftermarket hydrofoil stabilizer. FO2002 is shown as an aftermarket reference only; confirm the dimensions and mounting arrangement against your original part before ordering.
Safety & Important Information
- Verify the product dimensions, mounting-hole layout, and anti-ventilation plate clearance before purchase.
- Do not assume compatibility from horsepower alone; confirm the exact engine application whenever possible.
- Follow safe drilling and fastening practices, and consider professional installation if you are not experienced with outboard repairs.
- Inspect the mounting hardware after the first use and periodically thereafter.
About Sea Sierra
- Marine Replacement Parts — Practical aftermarket components for common boating and outboard applications.
- Application-Focused Listings — Product information is organized to help you compare dimensions, references, and installation requirements.
- Installation Support — Review the product information and mounting requirements carefully before beginning work.
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