Hydrofoil Stabilizer for Outboard Motors – Fits Most Brands 5–150 HP (Doel-Fin Style)

Hydrofoil Stabilizer for Outboard Motors – Fits Most Brands 5–150 HP

This marine-grade hydrofoil stabilizer is designed for outboard and sterndrive motors ranging from 5 to 150 HP. It is compatible with most major brands, including Yamaha, Mercury, Honda, Suzuki, and Tohatsu, offering a versatile solution for improving boat performance and handling.

Engineered to reduce bow rise, eliminate porpoising, and enhance overall stability, this hydrofoil gets your boat on plane faster. Its durable construction ensures reliable performance in various water conditions.

• Installation Method: Bolt-on, mounts directly to the anti-ventilation plate.
• Housing Material: Marine Grade UV-Resistant Reinforced Nylon PA66 Plastic.
• Package Includes: Hydrofoil, stainless steel mounting hardware, and a 6.5mm drill bit.

Compatible Engine Models

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.

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.

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

For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.

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 Instructions

Installation Guide

Installation requires drilling into the anti-ventilation plate of your motor. If you are not comfortable performing this procedure, we recommend professional installation.

1. Position the hydrofoil onto the anti-ventilation plate, ensuring it is centered and sits flush against the surface.
2. Use a marker to carefully mark the four drillings points through the mounting holes of the hydrofoil.
3. Remove the hydrofoil and use the included 6.5mm drill bit to drill the four marked holes through the plate.
4. Place the hydrofoil back onto the plate, align the holes, and securely fasten it using the four sets of included stainless steel screws and nuts.

Troubleshooting & FAQ

How do I know if this hydrofoil will fit my specific outboard model?

This hydrofoil offers a universal fit for most outboard and sterndrive motors from 5 to 150 HP. It attaches directly to the anti-ventilation plate. While it's compatible with major brands like Yamaha, Mercury, and Honda, installation requires drilling. Please measure your anti-ventilation plate (the hydrofoil's dimensions are 10-1/4" × 8-1/4") to ensure adequate space before ordering.

What are the main performance benefits I can expect?

Users typically experience faster planing, reduced bow rise for better visibility, and elimination of porpoising. It also enhances steering, improves handling in rough water, and provides better stability, which is great for water sports. Fuel savings may vary depending on your boat and usage.

Is drilling into my engine's anti-ventilation plate safe?

Yes, drilling is a standard and necessary step for installing this type of bolt-on hydrofoil. We include a specific 6.5mm drill bit and stainless steel hardware for a secure fit. Ensure you follow the included instructions carefully. If you are not comfortable with the process, professional installation is recommended.

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.