Whale Tail Hydrofoil Stabilizer – Fits Outboard & Sterndrive 40-300 HP Engines

Whale Tail Hydrofoil Stabilizer – Fits Outboard & Sterndrive 40-300 HP Engines (Replaces FO2003)

This whale tail style hydrofoil stabilizer is designed for universal application on most outboard and sterndrive engines rated from 40 to 300 HP. It enhances performance by getting the boat on plane faster, reducing or eliminating porpoising and cavitation, and improving overall fuel efficiency. Its Turbo Trac design provides improved steering precision at speed.

This unit is a direct aftermarket replacement for several part numbers, including UANOFCN FO2003, NorthBoat FO2003, SupremeMarine FO2003, and Marine Sport 300.

• Installation Method: Mounts directly to the anti-ventilation plate (requires drilling).
• Housing Material: Constructed from premium, high-strength PA66 marine-grade plastic.
• Complete Kit: Includes stainless steel mounting hardware and a drill bit for installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Hydrofoil Stabilizer (FO2003)
• 4 x Sets Stainless Steel Screws and Nuts
• 1 x Installation Instruction
• 1 x Drill bit for installation

Installation Guide

1. Safety First: Ensure the engine is off and the ignition key is removed. For added safety, disconnect the engine's battery.
2. Position the Hydrofoil: Place the hydrofoil onto the anti-ventilation plate of your outboard or sterndrive's lower unit. Center it carefully side-to-side.
3. Mark Drill Points: With the hydrofoil held firmly in position, use a marker to mark the center of the four mounting holes.
4. Drill the Holes: Remove the hydrofoil. Using the included drill bit, carefully drill the four marked holes through the anti-ventilation plate.
5. Mount the Hydrofoil: Align the hydrofoil with the newly drilled holes and insert the stainless steel bolts from the top.
6. Secure the Hardware: Attach the nuts to the bolts from underneath and tighten them securely. Do not over-tighten, as this could damage the plate.
7. Final Check: Once installed, ensure the hydrofoil is rigid and does not interfere with the propeller's movement. Reconnect the battery if it was disconnected.

Troubleshooting & FAQ

Q: How do I know if this hydrofoil will fit my engine?
A: This hydrofoil has a universal design intended for most outboard and sterndrive engines rated between 40 and 300 HP. The key requirement is a flat anti-ventilation plate above the propeller where the unit can be mounted. Please measure your plate and compare it to the product dimensions (16.93 × 14.17 inches) to ensure adequate space.

Q: Does this require drilling into my engine?
A: Yes, installation requires drilling four holes into the anti-ventilation plate. The kit includes a drill bit and all necessary stainless steel hardware to complete the job.

Q: What is the primary benefit of installing a hydrofoil?
A: A hydrofoil provides lift at the stern, which helps the boat get on plane much faster at lower speeds. This also helps reduce or eliminate common issues like porpoising (bow bouncing) and improves fuel efficiency by allowing the engine to work less to maintain planing speed.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.