Marine Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards (Replaces FO2002)

Marine Hydrofoil Stabilizer – Fits Yamaha, Mercury, Johnson 8-40 HP Outboards (Replaces FO2002)

Designed for most outboard motors between 8-40 HP, this whale tail style hydrofoil stabilizer improves boat performance, reduces bow rise, and increases fuel efficiency. The unit fits most Yamaha, Mercury, and Johnson outboard motors from 8-40 HP, with compatibility extending up to 300 HP for many models. Warning: this unit is not compatible with Mercury 4-stroke 40, 50, or 60 HP engines.

This part is a direct replacement for the following aftermarket part numbers: NorthBoat FO2002, UANOFCN 20HS001-Blue, and SeaSierra 200HS.

• Installation Method: Bolt-on design for a secure fit on the cavitation plate.
• Included Hardware: Comes with a drill for installation.
• Core Function: Helps maintain lower planing speeds, reduces boat bow rise, and can increase overall fuel efficiency.

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 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.

Technical Specifications

Package Contents

• 1 x Hydrofoil Stabilizer (FO2002)
• 1 x Installation Drill Bit

Installation Guide

1. Safety First: Ensure the engine is off and the boat is securely trailered or docked. Disconnect the engine's battery.
2. Position the Hydrofoil: Place the hydrofoil onto the anti-cavitation plate of your outboard motor. Center it and ensure it sits flush against the plate.
3. Mark Drill Holes: Use a marker to carefully mark the locations for the four mounting holes through the guides on the hydrofoil.
4. Drill the Holes: Remove the hydrofoil. Using the included drill bit, carefully drill the four marked holes through the cavitation plate.
5. Mount The Hydrofoil: Place the hydrofoil back onto the plate, aligning it with the newly drilled holes.
6. Secure the Bolts: Insert the mounting bolts from the top and fasten them securely with the included nuts and washers from below. Do not overtighten.
7. Final Check: Reconnect the battery. Check that the hydrofoil is tight and does not interfere with the propeller's movement.

Troubleshooting & FAQ

How do I know if this hydrofoil will fit my specific outboard model?
This hydrofoil is designed for most 8-40 HP Yamaha, Mercury, and Johnson/Evinrude outboards and can fit some models up to 300 HP. The critical exception is that it is not compatible with Mercury 4-stroke 40, 50, or 60 HP engines. Always check your engine's anti-cavitation plate dimensions against the hydrofoil's measurements (H: 13.5", W: 14.0") to ensure a proper fit before purchasing.

What are the main benefits of installing this hydrofoil?
Installing this hydrofoil helps your boat get on plane much faster, reduces porpoising and bow rise for better visibility, and improves stability and handling. It also allows the boat to maintain its plane at lower engine speeds, which can significantly improve fuel efficiency.

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.