{"title":"Sea Sierra 30HP 2-Stroke Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:980px;margin:0 auto 20px;\"\u003e\n  \u003cp\u003eThis page is for Sea Sierra 30HP 2‑Stroke outboard engines and helps you find compatible parts and service information. Inside you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Sea Sierra collection. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0ea5e9;border-radius:6px;text-decoration:none;color:#0ea5e9;\"\u003eBrowse All Sea Sierra Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003eHow to Identify Your 30HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the nameplate\/serial plate on the transom clamp bracket or swivel bracket. Record the full model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eDecode the model suffix for shaft length (S\/L\/XL), starting method (manual\/electric), and control type (tiller\/remote). Many plates also encode year or market region.\u003c\/li\u003e\n    \u003cli\u003eConfirm you have a 2‑Stroke platform: look for carburetors, a premix fuel instruction label, or an oil‑injection pump and remote oil tank lines.\u003c\/li\u003e\n    \u003cli\u003ePhotograph the nameplate and the part you’re replacing to speed up parts cross‑reference and compatibility checks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"platforms\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003e30 HP 2‑Stroke Inline‑2 (Carbureted)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInline‑2, loop‑charged 2‑Stroke with carburetors; common in tiller and remote‑control variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGeneric 30 HP 2‑Stroke families across major OEMs (e.g., earlier Yamaha\/Mercury\/Johnson‑Evinrude types).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLight weight, simple maintenance, and strong holeshot for small boats.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eUse NMMA TC‑W3 2‑Stroke oil. Confirm whether your engine is premix or oil‑injected. Many service items (impellers, filters, anodes, plugs) are application‑specific by model\/serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 30 HP outboards. Always follow the official service manual for your exact model and operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck for water (milky oil) or metal on magnet; replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect every 50 hrs; replace ~100 hrs or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eVerify heat range and gap per OEM; replace sooner if fouled or corroded.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark plug\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hrs or seasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eDrain\/inspect for water and debris; replace inline and engine‑mounted filters as specified.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 2–3 years (sooner in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eRestore strong tell‑tale and cooling performance; inspect housing and wear plate.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAnodes (zinc\/aluminum\/magnesium)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect every 50 hrs; replace at ~50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eChoose alloy for your water (salt\/brackish\/fresh). Keep mounting surfaces clean.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e2‑Stroke oil \/ oil‑injection service\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eOngoing; inspect system each season\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eUse NMMA TC‑W3 oil; verify pump calibration, lines, and alarms. For premix, follow OEM ratio.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLower unit seals (if leak found)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAs needed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePerform a pressure\/vacuum test; replace seals if water intrusion or leaks are confirmed.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePropeller \u0026amp; hub inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAs needed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck for bent blades, dings, and spun hubs; verify correct pitch for load.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition – \u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Sealing – \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWeak tell‑tale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect intake screen for blockage; test thermostat; assess impeller and housing wear.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWater pump kit, thermostat, intake screen, gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck prop damage\/slip; verify fuel quality and venting; inspect fuel filters and spark plugs.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePropeller, fuel filter, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eVerify choke\/primer operation; check primer bulb and fuel lines for leaks; set idle mixture per spec.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs, fuel line\/primer bulb, fuel filter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eExcessive smoke (2‑Stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfirm premix ratio or oil‑injection calibration; look for a stuck choke or rich idle settings.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eTC‑W3 2‑Stroke oil, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eDrain gear oil and inspect for water\/metal; pressure\/vacuum test; check prop shaft seal for fishing line.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLower unit seal kit, bearings, gear lube\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"padding:16px;max-width:980px;margin:0 auto;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eNot universally. Filters, anodes, props, and impellers vary by OEM, year, and specific model code. Always match parts using the full model\/serial and confirm key dimensions such as thread size, gasket OD\/ID, and spline count.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the water pump impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eTypically every 2–3 seasons for normal use. Replace sooner if the tell‑tale weakens, overheat alarms occur, or if you operate in sandy\/silty water that accelerates wear.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, every 100 hours or annually. Change immediately if you see milky oil (water intrusion) or metallic debris, and address seal issues before returning the engine to service.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the full model code, serial number, approximate year, shaft length, starting method, and control type. Clear photos of the nameplate and the current part help ensure an accurate cross‑reference.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;max-width:980px;margin:0 auto 30px;\"\u003e\n  \u003cp\u003eReady to find the right components? Browse our main Sea Sierra collection by horsepower, year, and model to match compatible replacement parts.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;margin-top:6px;padding:10px 14px;border:1px solid #0ea5e9;border-radius:6px;text-decoration:none;color:#0ea5e9;\"\u003eStart Browsing Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#6b7280;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"hydrofoil-stabilizer-fits-outboard-motors-5-150-hp-replaces-seasierra-fo2001-quickmarine-hs001","title":"Hydrofoil Stabilizer for Outboard Motors, 5–150 HP – Aftermarket Replacement for FO2001 and HS001","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eHydrofoil Stabilizer\u003c\/strong\u003e is a wing-shaped planing aid designed to mount on the anti-ventilation plate of compatible outboard motors and stern drives rated from 5 to 150 HP. It helps the boat plane faster, reduces bow rise, improves low-speed stability and handling, and may improve fuel efficiency depending on the boat, engine, load, trim and operating conditions. It is suitable for use with compatible 2-stroke and 4-stroke outboard applications.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket hydrofoil is listed as a replacement reference for \u003cstrong\u003eFO2001\u003c\/strong\u003e and \u003cstrong\u003eHS001\u003c\/strong\u003e numbers used by various aftermarket sellers, including SeaSierra, QuickMarine, UanofCn, Xingrong and NorthBoat. These references are not OEM manufacturer part numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMounts to the anti-ventilation plate with the supplied bolt-on hardware.\u003c\/li\u003e\n  \u003cli\u003eMade from marine-grade, UV-resistant reinforced nylon PA66 plastic for use in freshwater and saltwater environments.\u003c\/li\u003e\n  \u003cli\u003eDorsal-fin-style design provides an enlarged wing surface for added stern lift and stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following aftermarket references when comparing replacement products. Confirm the hydrofoil dimensions, mounting-hole pattern and included hardware before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Aftermarket Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or Seller Reference\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSeaSierra\u003c\/td\u003e\n\u003ctd\u003eFO2001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eQuickMarine\u003c\/td\u003e\n\u003ctd\u003eHS001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUanofCn\u003c\/td\u003e\n\u003ctd\u003eFO2001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eXingrong\u003c\/td\u003e\n\u003ctd\u003eHS001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNorthBoat\u003c\/td\u003e\n\u003ctd\u003eHS001\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis is a general-fit aftermarket hydrofoil intended for compatible outboard motors and stern drives rated between 5 and 150 HP. Because anti-ventilation-plate dimensions and mounting arrangements vary, verify the available plate area, clearance around the propeller and the installation requirements for your specific engine before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke and 4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke and 4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke and 4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke and 4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEvinrude\u003c\/td\u003e\n\u003ctd\u003eCompatible outboards\u003c\/td\u003e\n\u003ctd\u003e5–150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eAftermarket application; verify plate dimensions and clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eCompatible stern drives\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eVerify anti-ventilation-plate suitability before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003eCompatible stern drives\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eVerify anti-ventilation-plate suitability before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eHydrofoil stabilizer \/ planing aid\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eMounts to the anti-ventilation plate with supplied hardware\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eNot applicable; external engine accessory\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eBolt-on installation with supplied hardware\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade, UV-resistant reinforced nylon PA66 plastic\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eYellow, black, blue, gray or white; color availability may vary\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e10-1\/4 in × 8-1\/4 in (260.4 mm × 209.6 mm)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e2.41 lb (1.09 kg)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eGeneral fit for compatible outboard motors and stern drives\u003c\/dd\u003e\n  \u003cdt\u003eThread Size\u003c\/dt\u003e\n\u003cdd\u003eNot specified; stainless steel mounting hardware is supplied\u003c\/dd\u003e\n  \u003cdt\u003eDesign\u003c\/dt\u003e\n\u003cdd\u003eDorsal-fin style with enlarged wing surface\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Hydrofoil Stabilizer\u003c\/li\u003e\n  \u003cli\u003e4 × Sets of stainless steel screws and nuts\u003c\/li\u003e\n  \u003cli\u003e1 × 6.5 mm drill bit\u003c\/li\u003e\n  \u003cli\u003e1 × Installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the engine battery and make sure the engine is tilted up and secured safely.\u003c\/li\u003e\n  \u003cli\u003ePosition the hydrofoil on the anti-ventilation plate. Center it and confirm that it will not interfere with propeller movement or steering components.\u003c\/li\u003e\n  \u003cli\u003eMark the drilling locations through the hydrofoil's mounting holes.\u003c\/li\u003e\n  \u003cli\u003eRemove the hydrofoil and carefully drill the marked holes using the supplied 6.5 mm drill bit, if appropriate for the plate and installation.\u003c\/li\u003e\n  \u003cli\u003ePlace the hydrofoil back on the plate and align the holes.\u003c\/li\u003e\n  \u003cli\u003eInsert the stainless steel screws from the top and secure them with the nuts from below. Tighten firmly without over-torquing or deforming the plate.\u003c\/li\u003e\n  \u003cli\u003eCheck that all hardware is tight and that the hydrofoil is securely attached.\u003c\/li\u003e\n  \u003cli\u003eTest the boat at low speed before full-speed operation. Check handling, vibration, clearance and hardware tightness.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm that this hydrofoil fits my specific outboard motor?\u003c\/summary\u003e\u003cp\u003eCheck that your anti-ventilation plate is large enough for the 10-1\/4 in × 8-1\/4 in hydrofoil and that the installation area provides adequate propeller, steering and trim clearance. Horsepower range alone does not guarantee fitment. Compare the product dimensions and mounting arrangement with your engine before drilling.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the advantage of the dorsal-fin-style design?\u003c\/summary\u003e\u003cp\u003eThe fin and wing shape provide additional planing surface and stern lift. This can improve low-speed stability, reduce bow rise and help the boat reach a stable planing attitude more quickly. Results vary with hull design, engine setup, load and trim.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy is my boat slower after installation?\u003c\/summary\u003e\u003cp\u003eA hydrofoil can increase drag in some installations. Recheck that the hydrofoil is centered, secure and correctly aligned with the anti-ventilation plate. Confirm that it does not contact or obstruct the propeller and that the engine trim is appropriate. If handling or vibration is abnormal, stop operating the boat and inspect the installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\u003cp\u003eInstallation can be completed by a person with suitable mechanical skills and tools, but it requires drilling the anti-ventilation plate. If you are not confident about drilling, alignment, clearance or fastening, have the work completed or inspected by a qualified marine technician.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs that the hydrofoil needs replacement?\u003c\/summary\u003e\u003cp\u003eInspect it regularly for cracks, warping, impact damage, loose fasteners or abnormal vibration. Replace the hydrofoil if it is damaged or cannot be secured firmly. Inspect the mounting plate and hardware at the same time.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill it prevent porpoising?\u003c\/summary\u003e\u003cp\u003eA hydrofoil may reduce porpoising by adding stern lift and helping the boat maintain a more consistent planing attitude, but it cannot guarantee elimination of porpoising. Correct weight distribution, engine trim and hull setup also affect the result.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement hydrofoil. FO2001 and HS001 are aftermarket reference numbers associated with comparable products; they should be used for comparison only, not as a claim of original-equipment manufacture.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping and delivery details?\u003c\/summary\u003e\u003cp\u003eShipping methods, delivery estimates and cost are shown at checkout and may vary by destination and service selected.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eWarranty coverage and return eligibility are governed by the seller's current policies. Contact customer support with your order details before returning or modifying a product if you experience a problem.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the hydrofoil dimensions, plate size, mounting clearance and propeller clearance for your engine before drilling or purchasing.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eInspect all fasteners before each use, especially after the first water test and after any impact.\u003c\/li\u003e\n  \u003cli\u003eStop operation immediately if you notice vibration, looseness, cracking, steering changes or contact with the propeller.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when drilling or marine hardware installation is outside your experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 selected for practical fitment and real-world use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Available shipping options and delivery estimates are shown during checkout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We aim to provide practical replacement parts at competitive prices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718256726331,"sku":"SS-19HS001-Y","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/SS-19HS001-Y.png?v=1762958184"}],"url":"https:\/\/seasierra.com\/collections\/sea-sierra-30hp-2-stroke-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}