{"product_id":"water-pump-oil-seal-fits-yamaha-115-300hp-replaces-93101-28m16-00","title":"Water Pump Oil Seal – Fits Yamaha 115-300HP (Replaces 93101-28M16-00)","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\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eWater Pump Oil Seal\u003c\/strong\u003e is designed for a broad range of Yamaha 2-stroke and 4-stroke outboard engines from 115HP to 300HP, covering models from 1984 to the present. It serves as a crucial component for maintaining the integrity of the water pump assembly, preventing leaks and ensuring efficient operation.\u003c\/p\u003e\n\u003cp\u003eThis part directly replaces Yamaha OEM part 93101-28M16-00 and is interchangeable with Sierra 18-0265, Mallory 9-76412, and Mallory 9-76421.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for a stacked installation where two seals are used together.\u003c\/li\u003e\n\u003cli\u003eDesigned specifically as an S-Type oil seal for marine water pump applications.\u003c\/li\u003e\n\u003cli\u003eThe package includes two seals, providing a complete set for one engine service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\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        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003eCurrent OEM\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e93101-28018\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 93101-28M16-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e93101-028019\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 93101-28M16-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0265\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-76412\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-76421\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model and year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis seal fits a wide variety of V4 and V6 Yamaha outboards, including models in the high-performance SHO\/VMAX series.\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\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\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\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eVarious V4\/V6\u003c\/td\u003e\n        \u003ctd\u003e115-130\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eVarious V4\/V6\u003c\/td\u003e\n        \u003ctd\u003e150-175\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eVarious V4\/V6\u003c\/td\u003e\n        \u003ctd\u003e200-225\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eVarious V4\/V6\u003c\/td\u003e\n        \u003ctd\u003e250-300\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF115\u003c\/td\u003e\n        \u003ctd\u003e115\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF150-F200\u003c\/td\u003e\n        \u003ctd\u003e150-200\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF225-F300\u003c\/td\u003e\n        \u003ctd\u003e225-300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eVF115-VF250\u003c\/td\u003e\n        \u003ctd\u003e115-250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000+\u003c\/td\u003e\n        \u003ctd\u003e93101-28M16-00\u003c\/td\u003e\n        \u003ctd\u003eSHO\/VMAX Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Oil Seal\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eStacked (two seals)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eI.D. 27mm, O.D. 43.25mm, Width 7mm\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eSeal Type\u003c\/dt\u003e\n\u003cdd\u003eS-Type oil seal designed for water pump application\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Water Pump Oil Seals (replaces 93101-28M16-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n    \u003cli\u003eDisconnect the battery and safely remove the lower unit from the outboard.\u003c\/li\u003e\n    \u003cli\u003eDisassemble the water pump housing to access the old oil seals.\u003c\/li\u003e\n    \u003cli\u003eCarefully pry out the two old seals, noting their orientation. Clean the seal bore thoroughly, removing any corrosion or debris.\u003c\/li\u003e\n    \u003cli\u003ePress the first new seal into the housing.\u003c\/li\u003e\n    \u003cli\u003eInstall the second seal directly on top of the first, creating a stacked pair. Ensure both are seated evenly and at the correct depth.\u003c\/li\u003e\n    \u003cli\u003eLightly grease the driveshaft and seal lips before reassembling the water pump and installing the lower unit.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if these seals are correct for my engine?\u003c\/summary\u003e\n  \u003cp\u003eFirst, check the Engine \u0026amp; Model Compatibility table on this page. If your model and year appear, this part is a likely fit. For 100% certainty, always verify the OEM part number (93101-28M16-00) against your engine's service manual or parts diagram before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhy are two seals included and how are they installed?\u003c\/summary\u003e\n  \u003cp\u003eThese seals are designed for a \"stacked\" installation where two are used together in the water pump housing. This provides a redundant barrier against water intrusion into the gearcase. They must be installed correctly, often back-to-back, to function properly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water pump oil seal?\u003c\/summary\u003e\n  \u003cp\u003eThe most common symptom is finding water in your lower unit gear lube, which will often make the oil look milky or cloudy. You might also see a slight oil or water leak from the weep hole on the leg of the outboard just above the lower unit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should these seals be replaced?\u003c\/summary\u003e\n  \u003cp\u003eIt is best practice to replace these oil seals every time you service your water pump impeller, which is typically recommended every 1-2 years or 100-200 hours, depending on operating conditions (especially in saltwater).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an original Yamaha OEM part?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is for an aftermarket replacement, not an OEM component. It has been manufactured in an ISO 9002 facility to meet or exceed OEM specifications using comparable materials and is batch-inspected for quality and consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow long does shipping take and what does it cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and their costs will be presented at checkout.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n  \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our full policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images and specifications against 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 part, not an original equipment (OEM) component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance. Incorrect installation can lead to engine damage.\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 engineered to OEM-level tolerances and rigorously tested for real-world reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — With free standard delivery to most regions, you can expect your parts to arrive in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We offer fair, transparent pricing by removing middlemen, without ever compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718261969211,"sku":"KF2808 x 2","price":7.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/seasierra.com\/products\/water-pump-oil-seal-fits-yamaha-115-300hp-replaces-93101-28m16-00","provider":"SeaSierra","version":"1.0","type":"link"}