{"product_id":"hydrofoil-stabilizer-fits-outboard-motors-stern-drives-40-300-hp-replaces-uanofcn-fo2003-seasierra-300-se-sport-300","title":"Hydrofoil Stabilizer – Fits Outboard Motors \u0026 Stern Drives 40-300 HP (Replaces UANOFCN FO2003, SeaSierra 300, SE Sport 300)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis marine-grade reinforced nylon PA66 \u003cstrong\u003eWhale Tail Hydrofoil Stabilizer (FO2003)\u003c\/strong\u003e is engineered to significantly improve boat handling, reduce bow lift, shorten planing time, and increase fuel economy. It is designed for universal fitment on most outboard motors and stern drives ranging from 40 to 300 horsepower.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct replacement for interchange part numbers including UANOFCN FO2003, SeaSierra 300 Whale Tail, SE Sport 300, and HD300 Whale Tail Stabilizer.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstalls directly to the anti-ventilation plate via a bolt-on connection (requires drilling).\u003c\/li\u003e\n    \u003cli\u003eConstructed from UV-resistant and impact-resistant reinforced Nylon-PA66 plastic for durability in marine environments.\u003c\/li\u003e\n    \u003cli\u003ePackage includes all necessary stainless steel mounting hardware and a drill bit for installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eUANOFCN\u003c\/td\u003e\n        \u003ctd\u003eFO2003\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSeaSierra\u003c\/td\u003e\n        \u003ctd\u003e300 Whale Tail\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSE Sport\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eHD\u003c\/td\u003e\n        \u003ctd\u003eHD300 Whale Tail Stabilizer\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eType\u003c\/th\u003e\n        \u003cth\u003ePower Range\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOutboard Motors\u003c\/td\u003e\n        \u003ctd\u003e40–300 HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eNot compatible with Mercury 4-Stroke 40HP, 50HP, 60HP models. Not compatible with Volvo Ocean Series XDP drives.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eStern Drives\u003c\/td\u003e\n        \u003ctd\u003e40–300 HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eFor Volvo SX-A, DPS, DPR, DPH, 280, and 290 series, additional longer bolts and 1 fender washer are needed (not included).\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eHydrofoil Stabilizer (Whale Tail Style)\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to anti-ventilation plate with included hardware\u003c\/dd\u003e\n    \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eBolt-on (requires drilling)\u003c\/dd\u003e\n    \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eReinforced Nylon-PA66 Plastic\u003c\/dd\u003e\n    \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eAvailable in Black, Silver, Blue, Red\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eH: 14.5 in (368 mm) × W: 17.0 in (432 mm)\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e1.54 kg (3.4 lbs)\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eUV-resistant construction; enhanced impact resistance\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Whale Tail Hydrofoil Stabilizer (FO2003)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Sets of Stainless Steel Screws and Nuts\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e1 x 6.5mm Drill Bit\u003c\/li\u003e\n    \u003cli\u003e1 x Installation Instruction\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eCenter the hydrofoil on top of the anti-ventilation plate of your motor or stern drive. Ensure it is positioned correctly for optimal performance.\u003c\/li\u003e\n    \u003cli\u003eWith the hydrofoil held firmly in place, use a marker to mark the four drill hole locations on the anti-ventilation plate.\u003c\/li\u003e\n    \u003cli\u003eRemove the hydrofoil and carefully drill the four marked holes using the included 6.5mm drill bit.\u003c\/li\u003e\n    \u003cli\u003ePlace the hydrofoil back onto the plate, aligning the holes. Insert the stainless steel screws from the top and secure them with the nuts from the bottom.\u003c\/li\u003e\n    \u003cli\u003eTighten all four sets of screws and nuts evenly and securely. Do not overtighten to avoid damaging the plate or hydrofoil.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this fit my specific boat engine?\u003c\/summary\u003e\n    \u003cp\u003eThis hydrofoil offers universal compatibility for most outboard and stern drive engines from 40-300 HP. However, it is confirmed NOT to fit Mercury 4-Stroke 40HP, 50HP, and 60HP models, or Volvo Ocean Series XDP drives. Please check the compatibility table and your engine specifications before purchasing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat extra hardware is needed for Volvo Penta stern drives?\u003c\/summary\u003e\n    \u003cp\u003eIf you are installing this on a Volvo SX-A, DPS, DPR, DPH, 280, or 290 series drive, you will require longer bolts and one fender washer. These items are not included in the standard package and must be sourced separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the main performance benefits?\u003c\/summary\u003e\n    \u003cp\u003eThis hydrofoil helps get your boat on plane faster, reduces or eliminates porpoising and bow lift, improves handling and stability in turns, and can increase fuel efficiency by allowing the boat to cruise at lower RPMs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow will I know if the hydrofoil is failing?\u003c\/summary\u003e\n    \u003cp\u003eInspect the hydrofoil regularly for any signs of cracking, stress fractures, or loosened hardware. A drop in performance, unusual vibrations, or visible damage are indicators that it may need replacement.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is this stabilizer made of?\u003c\/summary\u003e\n    \u003cp\u003eIt is constructed from a high-strength, marine-grade reinforced Nylon-PA66 plastic. This material is chosen for its excellent durability, impact resistance, and ability to withstand UV degradation and harsh saltwater environments.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install this myself?\u003c\/summary\u003e\n    \u003cp\u003eYes, installation is straightforward for those with basic mechanical skills. The kit includes the necessary hardware and a drill bit. However, professional installation is always recommended to ensure safety and correct fitment.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717913776443,"sku":"L1-M033-84T2","price":65.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/L1-M033-84T2.png?v=1762938299","url":"https:\/\/seasierra.com\/products\/hydrofoil-stabilizer-fits-outboard-motors-stern-drives-40-300-hp-replaces-uanofcn-fo2003-seasierra-300-se-sport-300","provider":"SeaSierra","version":"1.0","type":"link"}