{"product_id":"davis-instruments-doel-fin-hydrofoil-stabilizer-fin-black-for-outboard-and-stern-drive-motors-5-hp-and-up","title":"Davis Instruments Doel-Fin Hydrofoil Stabilizer Fin, Black, for Outboard and Stern Drive Motors 5 HP and Up","description":"\u003cp\u003eThe Davis Instruments Doel-Fin is the original hydrofoil stabilizer fin, engineered by an aeronautical engineer to improve overall performance on boats powered by outboard motors or outdrive units. Molded in two pieces of guaranteed unbreakable, high-strength plastic, each foil flexes independently to absorb shock from waves and rough water, protecting the mounting hardware and smoothing out the ride. The Doel-Fin (Manufacturer Part Number 440) is designed for use with small motors, big motors, and inflatable dinghies alike, making it a versatile stabilizer across a wide range of boats.\u003c\/p\u003e\u003cp\u003eOnce installed, the Doel-Fin delivers greater stability at speed, consistent planing at lower RPM, faster out-of-the-hole acceleration, steadier turns, higher top-end speeds, and lower bow rise throughout the RPM range. Because the boat climbs onto plane sooner and rides flatter, the engine runs more efficiently, which can save up to 30 percent on fuel consumption. This also means faster starts and a smoother pull for water skiers and wake boarders.\u003c\/p\u003e\u003cp\u003eThe Doel-Fin fits all newer outboard and stern drive motors from 5 horsepower, with the exception of Volvo Penta outdrives. Installation takes about 15 minutes and all necessary hardware is included, so it can be mounted without special tools. It is finished in black and weighs 2 pounds.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Davis Instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength plastic (two-piece molded)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Motor Types:\u003c\/strong\u003e Outboard motors and stern drive (outdrive) units, 5 horsepower and up, except Volvo Penta outdrives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Compatibility:\u003c\/strong\u003e Inflatable dinghies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Time:\u003c\/strong\u003e Approximately 15 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Hardware:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 011698001859\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits all newer outboard and stern drive motors from 5 horsepower, except Volvo Penta outdrives. Also suitable for small motors, big motors, and inflatable dinghies.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Davis Instruments Doel-Fin?\u003c\/strong\u003e The Doel-Fin (Manufacturer Part Number 440) is a hydrofoil stabilizer fin that mounts on outboard motors or outdrive units to improve boat performance, originally developed by an aeronautical engineer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Doel-Fin fit my outboard motor?\u003c\/strong\u003e The Doel-Fin fits all newer outboard and stern drive motors from 5 horsepower, with the exception of Volvo Penta outdrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Doel-Fin made of?\u003c\/strong\u003e It is molded in two pieces of guaranteed unbreakable, high-strength plastic, with each foil flexing independently to absorb shock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much fuel can the Doel-Fin save?\u003c\/strong\u003e Installing the Doel-Fin 440 hydrofoil can save up to 30 percent on fuel consumption by helping the boat plane at lower RPM.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long does installation take?\u003c\/strong\u003e Installation of the Doel-Fin takes about 15 minutes, and all necessary hardware is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Doel-Fin be used on inflatable dinghies?\u003c\/strong\u003e Yes, the Doel-Fin is designed for use with small motors, big motors, and inflatable dinghies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Doel-Fin available in?\u003c\/strong\u003e The Doel-Fin 440 is finished in black.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Doel-Fin weigh?\u003c\/strong\u003e The Doel-Fin hydrofoil stabilizer weighs 2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat performance benefits does the Doel-Fin provide?\u003c\/strong\u003e Benefits include greater stability, consistent planing at lower RPM, faster out-of-the-hole acceleration, steadier turns, higher top-end speeds, and lower bow rise at all speeds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Doel-Fin different from the Whale Tail XL stabilizer?\u003c\/strong\u003e The Doel-Fin is a two-piece molded high-strength plastic hydrofoil that flexes independently to absorb shock, while the Whale Tail XL is an aluminum stabilizer fin that extends out behind the prop to capture prop wash energy for lift.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Doel-Fin a genuine Davis Instruments part?\u003c\/strong\u003e Yes, this listing is for the genuine Davis Instruments Doel-Fin hydrofoil stabilizer, Manufacturer Part Number 440.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Doel-Fin help reduce bow rise?\u003c\/strong\u003e Yes, the Doel-Fin 440 lowers bow rise at all speeds while also steadying turns and improving overall stability.\u003c\/p\u003e","brand":"Davis Instruments","offers":[{"title":"Default Title","offer_id":49026458616027,"sku":"DAV-440","price":41.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/00440_05_891a232a-d045-4e5c-bb44-f7ff545a02ca.jpg?v=1785026821","url":"https:\/\/www.goodvibesmarina.com\/products\/davis-instruments-doel-fin-hydrofoil-stabilizer-fin-black-for-outboard-and-stern-drive-motors-5-hp-and-up","provider":"Good Vibes Marina","version":"1.0","type":"link"}