{"product_id":"whale-tail-hydrofoil-stabilizer-fits-outboard-motors-stern-drives-40-350-hp-replaces-se-sport-300-fo2003","title":"Whale Tail Hydrofoil Stabilizer – Fits Outboard Motors \u0026 Stern Drives 40–350 HP (Replaces SE Sport 300, FO2003)","description":"\u003csection\u003e\n\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\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003eWhale Tail Hydrofoil Stabilizer\u003c\/strong\u003e is designed to improve performance and stability for most outboard motors and stern drives from 40 HP to 350 HP, including both 2-Stroke and 4-Stroke engines. Its dorsal fin style enhances handling, reduces cavitation, and allows the boat to plane at lower speeds, improving fuel efficiency.\u003c\/p\u003e\n  \u003cp\u003eThis unit is a direct aftermarket interchange for SeaSierra FO2003, SEASIERRA 300HS, NorthBoat FO2003, SE Sport 300, HD300 Whale Tail Stabilizer, and XRmarine Sport-300.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eMounts directly to the anti-ventilation plate (requires drilling).\u003c\/li\u003e\n    \u003cli\u003eConstructed from UV-resistant, high-impact marine grade plastic.\u003c\/li\u003e\n    \u003cli\u003eIncludes all necessary stainless steel mounting hardware and a drill bit.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\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\u003eSea Sierra\u003c\/td\u003e\n          \u003ctd\u003eFO2003\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSea Sierra\u003c\/td\u003e\n          \u003ctd\u003e300HS\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eNorthBoat\u003c\/td\u003e\n          \u003ctd\u003eFO2003\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\u003eXRmarine\u003c\/td\u003e\n          \u003ctd\u003eSport-300\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHD\u003c\/td\u003e\n          \u003ctd\u003e300 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\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  \n  \u003cp\u003eThis hydrofoil offers universal fitment for most major outboard brands within the 40–350 HP range. No OEM approval is implied.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Universal Outboard Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eRated HP\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\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSuzuki\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\/Nissan\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit for all compatible models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eFitment is also universal for most MerCruiser and OMC stern drives. For select Volvo Penta models, special hardware is required.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Universal Stern Drive Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\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\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003eCompatible models\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eOMC\u003c\/td\u003e\n          \u003ctd\u003eCompatible models\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003eAftermarket fit.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003eSX-A, DPS, DPR, DPH, 280, 290 series\u003c\/td\u003e\n          \u003ctd\u003e40-350\u003c\/td\u003e\n          \u003ctd\u003eRequires longer bolts and 1\" fender washers. Not compatible with Volvo Ocean Series XDP.\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eHydrofoil Stabilizer, Dorsal Fin Style\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to anti-ventilation plate with included hardware (requires drilling)\u003c\/dd\u003e\n    \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline (compatible with all engine fuel types)\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\u003eMarine Grade Nylon-PA66 Plastic\u003c\/dd\u003e\n    \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eAvailable in Black, Blue, Red, or Silver\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eH: 17 inches (43.18 cm) × W: 14.4 inches (36.58 cm)\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e1.79 kg (3.95 pounds)\u003c\/dd\u003e\n    \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBolted attachment\u003c\/dd\u003e\n    \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 year against manufacturing defects (typical for aftermarket parts)\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\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Hydrofoil Stabilizer\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\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x 6.5mm Drill Bit\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e1 x Installation Instructions\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eEnsure the engine is off and the battery is disconnected. Secure the outboard motor in a tilted position to access the anti-ventilation plate.\u003c\/li\u003e\n    \u003cli\u003ePosition the hydrofoil onto the anti-ventilation plate. Ensure it is centered and does not interfere with the propeller's movement.\u003c\/li\u003e\n    \u003cli\u003eUse a marker or punch to mark the four drill hole locations on the plate through the holes in the hydrofoil.\u003c\/li\u003e\n    \u003cli\u003eRemove the hydrofoil and carefully drill the marked holes using the included 6.5mm drill bit.\u003c\/li\u003e\n    \u003cli\u003eApply a marine-grade sealant around the drilled holes to prevent water intrusion and corrosion.\u003c\/li\u003e\n    \u003cli\u003eAlign the hydrofoil with the holes, insert the stainless steel bolts, and secure them with the provided nuts.\u003c\/li\u003e\n    \u003cli\u003eTighten the nuts evenly until the hydrofoil is firmly secured. Do not overtighten, as this can crack the plastic housing or damage the plate.\u003c\/li\u003e\n    \u003cli\u003eAfter the first water test, re-check the hardware to ensure it remains tight.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this hydrofoil fit my specific engine model?\u003c\/summary\u003e\n    \u003cp\u003eThis hydrofoil is designed for universal fitment on most outboard and stern drive engines from 40 to 350 HP. Please review the compatibility tables. For Volvo Penta drives, note the specific requirements for bolts and washers. Always verify your anti-ventilation plate has sufficient flat surface area for mounting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat performance benefits can I expect?\u003c\/summary\u003e\n    \u003cp\u003eA properly installed hydrofoil helps your boat get on a plane faster, especially with heavy loads. It can also maintain planing at lower speeds, reduce or eliminate porpoising and cavitation, and improve stability and handling in turns.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow difficult is the installation process?\u003c\/summary\u003e\n    \u003cp\u003eInstallation is straightforward for those comfortable with basic tools. It involves drilling four holes into your engine's anti-ventilation plate. The package includes the necessary drill bit and hardware. If you are unsure, we recommend professional installation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill drilling holes void my engine's warranty?\u003c\/summary\u003e\n    \u003cp\u003eModifying any part of your engine, including drilling into the anti-ventilation plate, may affect its warranty. We recommend checking with your engine manufacturer or dealer if your motor is still under warranty.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the difference between this model and the SE Sport 300?\u003c\/summary\u003e\n    \u003cp\u003eThis is an aftermarket replacement built to the same specifications for fitment and performance as the SE Sport 300 and other equivalents. It is made from similar durable, marine-grade materials to ensure longevity and effectiveness.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know if the hydrofoil is working correctly?\u003c\/summary\u003e\n    \u003cp\u003eYou should notice a significant improvement in the time it takes to get on plane. The boat should feel more stable at speed, and you may observe less bow rise upon acceleration. The engine may also be able to maintain a plane at a lower RPM, contributing to fuel savings.\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\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\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\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718234968379,"sku":"SS-20HS002-B","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/SS-20HS002-B.png?v=1762958028","url":"https:\/\/seasierra.com\/products\/whale-tail-hydrofoil-stabilizer-fits-outboard-motors-stern-drives-40-350-hp-replaces-se-sport-300-fo2003","provider":"SeaSierra","version":"1.0","type":"link"}