Skip to product information
1 of 1
1 product view Open images for a closer look Compare photos with product details

Davis Instruments

Davis Instruments 440 Doel-Fin Hydrofoil, Unbreakable Plastic

Davis Instruments 440 Doel-Fin Hydrofoil, Unbreakable Plastic

SKUCT-102293

Regular price $41.04
Regular price Sale price $41.04
Sale Sold out
Shipping calculated at checkout.
Shipping rewards at $100 U.S. orders of $100 or more get free standard shipping, plus $10 off Expedited and Overnight.

Low stock

Quantity
Use the Tug & Tow SKUInclude this SKU when you contact us about fit, availability, or reorders.
Delivery shown at checkoutShipping options, final costs, and delivery estimates appear before payment.
Check fit before orderingReview dimensions, part numbers, model details, and compatibility notes.
Confirm the details before checkoutFit can depend on your boat, RV, trailer, vehicle, or equipment. Contact us before ordering if compatibility is critical.Ask a product question

Product details

Review the details before ordering.

Maximize your boat's efficiency and control with the Davis Instruments 440 Doel-Fin Hydrofoil. As the original hydrofoil developed by an aeronautical engineer, this innovative marine accessory is crafted from guaranteed unbreakable, high-strength plastic, ensuring long-lasting durability in harsh conditions. Its two-piece design allows each foil to flex independently, effectively absorbing shock for a smoother ride. Experience faster out-of-the-hole performance, consistent planing at lower RPMs, and significantly improved fuel economy—up to 30% savings. Upgrade your vessel today for a safer, more stable, and more enjoyable boating experience.

Key Benefits:
  • Unbreakable, High-Strength Construction: Molded from two pieces of guaranteed unbreakable, high-strength plastic, ensuring maximum durability and reliability.
  • Independent Flex Design: Each foil flexes independently to absorb shock, providing a noticeably smoother ride in varying water conditions.
  • Improved Planing & Stability: Achieves consistent planing at lower RPMs, enhances overall boat stability, and reduces bow rise for better visibility and increased safety.
  • Enhanced Fuel Efficiency: Contributes to better gas mileage, with potential fuel savings of up to 30%, reducing operational costs.
  • Faster Acceleration: Delivers quicker out-of-the-hole performance, ideal for water skiing, wakeboarding, and tubing.
  • Steadier Turns: Improves handling and reduces cavitation in tight turns, providing a feeling akin to power steering.
  • Simple 15-Minute Installation: Designed for quick and easy installation with included hardware, getting you on the water faster.
Compatibility & Pairings:
  • Universal Fit: Compatible with all outboard motors, inboard/outboard (I/O) drives, and stern drives 5 horsepower and up.
  • Versatile Application: Suitable for use with small motors, big motors, and inflatable dinghies.
  • Exclusion: Does not fit Volvo Penta 280 and 290 outdrives.

Shipping & returns

Shipping methods, delivery estimates, and final costs appear at checkout before payment. Some bulky, supplier-shipped, or special-handling items may ship separately. See Shipping & Returns for return windows and eligibility.

Fit & compatibility

Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.

Need help choosing?

Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.

View full details