HydroFoil Stabilizer – Sport-300 Whale Tail Fits Outboard Motors & Stern Drives 40-350 HP (Replaces SE Sport 300, HD300)
HydroFoil Stabilizer – Sport-300 Whale Tail Fits Outboard Motors & Stern Drives 40-350 HP (Replaces SE Sport 300, HD300) 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 – Sport-300 Whale Tail Fits Outboard Motors &a...
HydroFoil Stabilizer – Sport-300 Whale Tail Fits Outboard Motors & Stern Drives 40-350 HP (Replaces SE Sport 300, HD300) is backordered and will ship as soon as it is back in stock.
Product Details
The Sport-300 Whale Tail HydroFoil Stabilizer is a marine performance enhancer designed to improve handling, planing speed, and fuel efficiency. It is universally compatible with a wide range of outboard motors and stern drives from 40 to 350 horsepower.
This part serves as a direct replacement for interchange numbers including SE Sport 300 HydroFoil, HD300 Whale Tail Stabilizer, and FO2003 Whale Tail Hydrofoil.
- Installation is a direct, bolt-on mount to the anti-ventilation plate (requires drilling).
- Constructed from premium UV-resistant Nylon-PA66 for enhanced durability and impact resistance.
- 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 |
|---|---|
| SE Sport | 300 |
| HD | 300 |
| FO | 2003 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Compatible With | Power Range | Stroke | Notes |
|---|---|---|---|
| Outboard Motors | 40-350 HP | 2-Stroke & 4-Stroke | Not compatible with Volvo Ocean Series XDP |
| Stern Drives | 40-350 HP | 2-Stroke & 4-Stroke | For Volvo SX-A, DPS, DPR, DPH, 280, and 290 series, additional longer bolts and 1 fender washer are needed (not included). |
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
- Position the hydrofoil onto the engine's anti-ventilation plate, ensuring it is centered and level.
- Carefully mark the four mounting hole locations on the plate through the holes in the hydrofoil.
- Remove the hydrofoil and drill the marked holes using the included 6.5mm drill bit.
- Place the hydrofoil back onto the plate and securely fasten it using the four sets of stainless steel screws and nuts provided.
- For specific Volvo Penta stern drives (SX-A, DPS, etc.), you may require longer bolts and a fender washer (not included) to ensure proper fitment.
Troubleshooting & FAQ
Will this hydrofoil fit my specific engine model?
This is a universal stabilizer designed for most outboard and stern drive engines from 40-350 HP. However, always check the compatibility notes for exceptions, such as the Volvo Ocean Series XDP and special requirements for other Volvo drives.
Do I need to drill holes in my engine?
Yes, installation is a bolt-on application and requires drilling four holes into the engine's anti-ventilation plate. A drill bit is included to simplify the process.
How does this hydrofoil improve performance?
It enhances performance by getting the boat on plane faster, maintaining plane at lower speeds, improving handling, reducing cavitation and porpoising, and increasing fuel efficiency by allowing the engine to operate at lower RPMs.
What is the hydrofoil made of?
It is manufactured from high-quality, durable Nylon-PA66, which offers excellent impact strength and is treated for UV resistance to prevent degradation from sun exposure.
What are the signs of a properly installed hydrofoil?
When installed correctly, you will notice significant improvements in your boat's performance, including faster planing, increased stability especially in rough water, and more responsive handling and control at both low and high speeds.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
