Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)
Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

Vendor: JLM Marine
Availability: In Stock
Product Type: Hydrofoil Stabilizer
$29.00
$34.00
$29.00
Subtotal: $29.00

Free Shipping

Free standard shipping on all orders under 1 KG

Worry-Free Returns

Learn More.
Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

$34.00 $29.00
Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

$34.00 $29.00
Description

Hydrofoil Stabilizer – Fits Outboard Motors & Stern Drives 5-150 HP (Dorsal Fin Style)

This is a universal hydrofoil stabilizer designed for 5-150 HP outboard motors and stern drives, and it is suitable for most boats with engines up to 200 HP. Its dorsal fin design enhances stability and improves on-plane performance by reducing cavitation and porpoising.

This part is a direct replacement for SeaSierra 19HS, Uanofcn FO2001, and Davis Doel-Fin 440.

  • Installation Method: Bolt-on (requires drilling)
  • Material: Reinforced, UV-resistant Nylon PA66 plastic for durability
  • Hardware: Includes a complete set of stainless steel mounting hardware

Part Number Cross-Reference

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

Brand Part Number
SeaSierra 19HS
Uanofcn FO2001
Davis Doel-Fin 440

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Type Rated HP Application Notes
All Brands Outboard Motors 5-150 HP Universal fit Not compatible with Volvo Penta 280/290 outdrives and BMW Outdrives for engines over 50HP
All Brands Stern Drives 5-150 HP Universal fit Compatible with Volvo Penta 270 outdrive
All Brands Outboards/Outdrives Up to 200 HP Universal fit Performance may vary based on boat configuration

Technical Specifications

Specification Value
Product Type Hydrofoil Stabilizer, Dorsal Fin Style
Installation Bolt-on (drilling required)
Housing Material Reinforced Nylon PA66 Plastic
Housing Color Black
Dimensions H: 260 mm (10-1/4 inches), W: 210 mm (8-1/4 inches)
Fitting Type Bolt-on with stainless steel hardware
Compatible HP Range 5-150 HP (up to 200 HP)
Other Technical Attributes UV-Resistant, Marine-grade construction

Package Contents

  • 1 x Hydrofoil Stabilizer (Dorsal Fin Style)
  • 4 x Stainless Steel Mounting Hardware Set (bolts, nuts)
  • 1 x Installation Guide

Installation Guide

This hydrofoil requires drilling for installation. Professional installation is recommended. Always wear safety glasses and gloves during the process.

  1. Step 1: Center the hydrofoil on the anti-cavitation plate of your outboard or stern drive. Ensure it is positioned correctly for optimal performance.
  2. Step 2: Use a pencil or marker to mark the four drill points through the mounting holes of the hydrofoil onto the plate.
  3. Step 3: Remove the hydrofoil and carefully drill the four marked holes through the anti-cavitation plate.
  4. Step 4: Place the hydrofoil back onto the plate, align the holes, and securely fasten it using the included stainless steel bolts and nuts.

Troubleshooting & FAQ

Q: How do I know if this hydrofoil will fit my engine?
A: This stabilizer has a universal design for most 5-150 HP outboard motors and stern drives. However, it is not compatible with Volvo Penta 280/290 outdrives or BMW Outdrives for engines over 50HP. We recommend measuring your anti-cavitation plate to ensure the hydrofoil's dimensions (H: 260 mm, W: 210 mm) will fit before purchasing.

Q: Do I need to drill holes to install this part?
A: Yes, installation requires drilling four holes into the anti-cavitation plate of your lower unit. All necessary stainless steel mounting hardware is included in the package to complete the installation.

Q: What is the main benefit of the dorsal fin design?
A: The dorsal fin provides improved directional stability and better handling, especially during turns. It helps the boat get on plane quicker, reduces cavitation (propeller ventilation), and minimizes porpoising for a smoother, more efficient 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.
Shipping

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

Recently Viewed Products