Sport-300 Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 40-350 HP
Sport-300 Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 40-350 HP is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Sport-300 Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors &a...
Product Details
The Sport-300 Whale Tail Hydrofoil Stabilizer is a marine performance enhancer for a wide range of outboard motors and stern drives from 40 to 350 horsepower. It mounts directly to the anti-ventilation plate to provide significant improvements in handling, planing speed, and fuel efficiency.
This unit serves as a direct interchange for the SE Sport 300 HydroFoil, HD300 Whale Tail Stabilizer, and FO2003 Whale Tail Hydrofoil.
- Installs via a bolt-on connection, requiring drilling for a secure fit.
- Constructed from UV-resistant and high-impact Nylon-PA66 for durability in marine environments.
- Includes all necessary stainless steel mounting hardware and a 6.5mm drill bit for convenience.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| SE Sport | 300 |
| HD | HD300 |
| Aftermarket | FO2003 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Outboard Motors
| Brand | Rated HP | Stroke | Notes |
|---|---|---|---|
| Mercury/Mariner | 40-350 | 2- & 4-Stroke | Not compatible with Mercury 40 HP 4-Stroke |
| Yamaha | 40-350 | 2- & 4-Stroke | |
| Johnson/Evinrude | 40-350 | 2- & 4-Stroke | |
| Honda | 40-350 | 2- & 4-Stroke | |
| Suzuki | 40-350 | 2- & 4-Stroke | |
| Tohatsu | 40-350 | 2- & 4-Stroke |
Stern Drives
| Brand | Model | Rated HP | Notes |
|---|---|---|---|
| Mercruiser | Various | 40-350 | |
| OMC | Various | 40-350 | |
| Volvo Penta | SX-A, DPS, DPR, DPH, 280, 290 series | 40-350 | Additional longer bolts and 1" fender washers needed |
| Volvo Penta | Ocean Series XDP | Any | Not compatible |
Technical Specs
- Product Type
- Outboard Motor Hydrofoil Stabilizer
- Installation
- Direct mount to anti-ventilation plate with included hardware
- Connection
- Bolt-on (requires drilling)
- Housing Material
- Nylon-PA66 (Premium quality)
- Housing Color
- Black
- Dimensions
- H: 17 inches (43.18 cm) × W: 14.4 inches (36.58 cm)
- Fitting Type
- Bolted attachment
- Other Technical Attributes
- UV-resistant construction; enhanced impact resistance
What’s in the Box
- 1 × Outboard Hydrofoil Stabilizer
- 4 × Sets of Stainless Steel Screws and Nuts
- 1 × 6.5mm Drill Bit
- 1 × Installation Instruction
Installation Notes
- For safety, disconnect the boat's battery and ensure the engine is off.
- Center the hydrofoil on the anti-ventilation plate (the flat plate above the propeller).
- Mark the four drill hole locations on the plate through the hydrofoil's mounting holes.
- Carefully drill the marked holes using the included 6.5mm drill bit.
- Securely fasten the hydrofoil to the plate using the provided stainless steel screws and nuts.
- Tighten all nuts evenly, but do not overtighten to avoid damaging the plate.
- After installation, perform a low-speed water test to check for proper handling and stability.
Troubleshooting & FAQ
Will this hydrofoil fit my specific engine model?
This is a universal-fit hydrofoil designed for most outboard and stern drive motors from 40 to 350 HP. However, always check the compatibility table for known exceptions. Notably, it is not compatible with the Mercury 40 HP 4-Stroke engine.
Is drilling into my engine's cavitation plate required?
Yes. This product is a bolt-on design that requires drilling four holes into the anti-ventilation (cavitation) plate for a secure and permanent installation.
What are the main performance benefits?
Installing this hydrofoil helps your boat get on plane faster, reduces or eliminates porpoising and cavitation, improves stability and control, and can increase fuel efficiency at cruising speeds by optimizing your boat's attitude in the water.
How does this compare to the name-brand SE Sport 300?
This product is an aftermarket equivalent designed to meet or exceed the performance of the SE Sport 300. It offers a similar aerodynamic shape and robust construction from high-quality Nylon-PA66, providing a comparable boost in performance and stability.
What tools do I need for installation?
You will need a power drill, a wrench or socket set to tighten the nuts, and standard safety gear. The package includes the essential hardware: a 6.5mm drill bit and four sets of stainless steel screws and nuts.
My Volvo Penta drive needs longer bolts. Are they included?
For some Volvo Penta drives (like the SX-A, DPS, and DPH series), the included bolts may not be long enough. In this case, you will need to source longer bolts and compatible 1" fender washers from a local marine supply or hardware store.
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
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