Doel-Fin Hydrofoil, Black - Davis
Price: $32.29
Save: $5.70
(15% Off $37.99)
Part # 440
2nd Day Air for $2.99 More Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 59 mins.

Enhance your boat’s efficiency and performance with the Doel-Fin Hydrofoil. Designed for outboard and stern drive boats, it allows quick planing. Plus, this hydrofoil helps keep your boat consistently planned even at lower RPMs, improving performance and reducing fuel consumption throughout. It also keeps bow rise at a low level at all speeds to ensure better visibility and safety. It enhances stability for better handling and steadier turn.

  • Quick planing of boats
  • Consistent planing at low RPMs
  • Reduces fuel consumption

This hydrofoil features a molded 2-piece construction. Slide the hydrofoil into the cavitation plate and then drill holes for attachment.

Features of Doel-Fin Hydrofoil:

  • Quick planing of boats
  • Planes consistently even at lower RPMs
  • Reduces fuel consumption
  • Improves stability
  • Higher top-end speeds
  • Steadier turns
  • Low bow rise at all speeds
  • Easy to install


  • Manf. Part # 440
  • Color: Black
Average Customer Review for Doel-Fin Hydrofoil, Black - Davis
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Good Investment
by Scott from Huntsville, Ontario on June 27, 2011
Easy install. Better overall performance. My boat planes faster and at lower speeds.
(26 of 29 people found this review helpful)
Was this review helpful?
Will this work on a Johnson 9.9?
Doel-Fin fits all outboard and stern drive motors from 5 horsepower up.

Will this work on a 150 shp yamaha?
Yes it will work on that engine.

Will it work on 5.7 liter eng merc i/o?
Yes. It works with outboards and sterndrive engines.

Will this Doel-Fin control a Deck Boat that " HUNTS" at low rpm's ?
It will help control consistent planing at lower RPM's, yes.

Will it fit a 1986 40hp Mercury?
Yes. It is designed for any engine and horse power.
It is universal in its design so yes this will fit your motor.

Ask a question
Question & Answer Guidelines
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies