Hydrofoil Stabilizer – Fits Marine Outboard and Sterndrive Motors (PA66 Plastic)

Hydrofoil Stabilizer – Fits Marine Outboard and Sterndrive Motors (PA66 Plastic)

A versatile marine hydrofoil stabilizer designed for a wide range of outboard and sterndrive engines from 5-150 HP. This fin helps lift the stern, getting the boat on plane faster for a smoother, more stable ride. It is a direct replacement for many Doel Fin style hydrofoils.

Constructed from high-strength, UV-resistant reinforced PA66 nylon plastic, this stabilizer is built to withstand demanding marine environments, providing long-lasting performance in both saltwater and freshwater. The design helps reduce porpoising, cavitation, and drag for improved safety and fuel efficiency.

• Installation Method: Simple bolt-on installation (hardware included).
• Material: Marine-grade reinforced nylon PA66 plastic.
• Broad Compatibility: Fits most outboard and sterndrive motors from 5 HP up to 150 HP.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Hydrofoil Stabilizer (White PA66 Plastic)
• 4 x Sets of stainless steel screws and nuts
• 1 x 6.5mm drill bit
• 1 x Installation instruction manual

Installation Guide

Follow these steps for a secure installation. Ensure the engine is off and the boat is safely trailered or secured before beginning.

1. Center the hydrofoil on top of the anti-cavitation plate of your outboard or sterndrive motor. Ensure it is positioned correctly for optimal water flow.
2. With the hydrofoil held firmly in place, use a marker to mark the four drill-hole locations on the cavitation plate.
3. Remove the hydrofoil and carefully drill the four marked holes using the included 6.5mm drill bit.
4. Place the hydrofoil back onto the plate, align the holes, and insert the four stainless steel bolts from the top. Secure them from below with the nuts and tighten firmly.

Troubleshooting & FAQ

Q: How do I know if this hydrofoil will fit my engine?
A: This hydrofoil is designed for a universal fit on most outboard and sterndrive motors from 5 to 150 HP. Please check the compatibility table for general brand guidelines and be aware it may not fit Mercury 4-Stroke 40/50/60 HP models. Ensure your engine's anti-cavitation plate can accommodate the hydrofoil's dimensions (approximately 14" W x 13.5" H).

Q: What are the main benefits of installing this hydrofoil?
A: It improves boat performance by getting you on plane faster, reducing or eliminating porpoising and cavitation, and providing a smoother, more stable ride, especially in choppy water. Many users also experience improved fuel efficiency due to reduced drag.

Q: Is the PA66 plastic durable enough for saltwater?
A: Absolutely. This hydrofoil is made from marine-grade, UV-resistant reinforced nylon PA66 plastic, which is specifically chosen for its high strength, durability, and resistance to harsh saltwater and freshwater environments.

Q: Will this stop my boat from porpoising?
A: In many cases, yes. The hydrofoil provides additional stern lift and stability, which counteracts the oscillating bow-up, bow-down motion known as porpoising, leading to a much smoother ride.

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.