Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP (Compatible with FO2002)

Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors 8-40 HP

This marine hydrofoil stabilizer is designed for outboard motors from major manufacturers including Yamaha, Mercury, Johnson, Evinrude, Honda, Suzuki, and Tohatsu in the 8-40 HP range. It is suitable for both 2-Stroke and 4-Stroke engines. It is also compatible with most outboards larger than 40 HP, with the specific exception of Mercury 4-Stroke 40, 50, and 60 HP models.

This part is a direct replacement for the following aftermarket models: SeaSierra FO2002, UanofCn FO2002, and NorthBoat FO2002.

• Installation: Direct bolt-on to the anti-ventilation plate (requires drilling).
• Housing Material: Constructed from durable Marine Grade Nylon PA66 Plastic.
• Complete Kit: Includes a hydrofoil, 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. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.

*Note: Will also fit most outboards larger than 40 HP except Mercury 4-Stroke 40, 50, 60 HP models. Some smaller outboards down to 4 HP may also be compatible.

Technical Specifications

Package Contents

• 1 x Hydrofoil Stabilizer
• 4 x Sets of Stainless Steel Screws and Nuts
• 1 x 6.5mm Drill Bit
• 1 x Installation Instruction Manual

Installation Guide

1. Ensure the engine is turned off and the boat is securely trailered or docked.
2. Position the hydrofoil stabilizer onto the anti-ventilation plate of your outboard motor to find the optimal placement.
3. Use a marker to mark the drilling points on the plate through the mounting holes of the stabilizer.
4. Remove the stabilizer and carefully drill the marked holes using the included 6.5mm drill bit.
5. Place the stabilizer back onto the plate, aligning it with the newly drilled holes.
6. Insert the provided stainless steel screws through the holes and secure them with the corresponding nuts.
7. Tighten the hardware evenly and securely, ensuring there is no movement. Do not over-tighten.
8. Consult the included installation manual for additional diagrams and manufacturer-specific recommendations.

Troubleshooting & FAQ

How do I confirm this fits my engine? This hydrofoil is designed for a broad range of outboard motors from 8 to 40 HP, including major brands like Yamaha, Mercury, and Johnson/Evinrude. Please check the detailed compatibility table on this page. Note that it specifically does not fit Mercury 4-Stroke 40, 50, and 60 HP models, though it may fit other engines above 40 HP.

Does installation require drilling? Yes, installation requires drilling four holes into the anti-ventilation plate of your outboard motor. To simplify this process, the kit includes all necessary stainless steel mounting hardware and a 6.5mm drill bit.

What is the main benefit of installing a hydrofoil stabilizer? A hydrofoil, also known as a "whale tail," is designed to improve your boat's performance. Key benefits include getting on plane faster, reducing porpoising and cavitation, and enhancing stability and handling, particularly at lower speeds.

OEM vs. Aftermarket? 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.

How fast do you ship and how much does it cost? 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.

What is your warranty and return policy? 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.