{"product_id":"yamaha-lower-unit-assy-6g9-45300-03-ek","title":"Yamaha - Lower unit assy - 6G9-45300-03-EK","description":"\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eYamaha Lower Unit Assembly – 6G9-45300-03-EK\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eOEM Yamaha Gearcase Replacement for Reliable Propulsion\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Yamaha Lower Unit Assembly – 6G9-45300-03-EK is a genuine factory-built gearcase designed to restore smooth, efficient power transfer on your Yamaha outboard. As a complete OEM assembly, it arrives with key components—including the gear housing, driveshaft, propeller shaft, bearings, seals, and shift shaft—pre-installed and factory-tested. This ensures a precise fit, easy installation, and Yamaha-grade reliability without the guesswork of rebuilding an old unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This part supersedes earlier assembly \u003cstrong\u003e6E0-45300-03-8D\u003c\/strong\u003e and has now been replaced by Yamaha’s updated part number \u003cstrong\u003e6G9-45300-06-EK\u003c\/strong\u003e. Always confirm fitment for your exact model before ordering.\u003c\/p\u003e\n\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete OEM Assembly:\u003c\/strong\u003e Includes housing, shafts, gears, and seals—ready to install out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fitment:\u003c\/strong\u003e Factory-built to match Yamaha specifications, eliminating alignment issues or tolerance mismatches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with marine-grade materials designed to resist corrosion and wear in saltwater or freshwater use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Replacement:\u003c\/strong\u003e No need to transfer old internal parts—drop-in installation saves time and effort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePart Number: \u003cstrong\u003e6G9-45300-03-EK\u003c\/strong\u003e (superseded from \u003cstrong\u003e6E0-45300-03-8D\u003c\/strong\u003e, later replaced by \u003cstrong\u003e6G9-45300-06-EK\u003c\/strong\u003e)\u003cbr\u003e\nDesigned for select Yamaha 2-stroke outboards in the mid-horsepower range. Please consult your Yamaha parts diagram or technician to confirm compatibility with your specific model and year.\u003c\/p\u003e\n\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eIdeal Use Cases\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMajor Gear Damage:\u003c\/strong\u003e Replace failed or seized lower units to restore propulsion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSaltwater Corrosion:\u003c\/strong\u003e Swap in a new sealed unit when corrosion compromises housings or seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Restoration:\u003c\/strong\u003e Perfect for refurbishing older Yamaha outboards to factory performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eWhy Choose a Genuine Yamaha Lower Unit?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe lower unit is one of the most critical and high-stress parts of your outboard. Choosing a genuine Yamaha assembly ensures exact tolerances, proper sealing, and long-term reliability. Unlike aftermarket gearcases, this unit arrives fully assembled and Yamaha-tested, saving you from installation errors and extending the life of your motor.\u003c\/p\u003e\n\n\u003ch3 class=\"disclosure__title h5 mb-0\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the unit come pre-filled with gear oil?\u003c\/strong\u003e\u003cbr\u003eNo, the unit is shipped dry. It must be filled with Yamaha-approved lower unit gear oil before operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this a brand-new OEM part?\u003c\/strong\u003e\u003cbr\u003eYes, this is a brand-new, factory-assembled Yamaha gearcase—not rebuilt or remanufactured.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a mechanic to install this?\u003c\/strong\u003e\u003cbr\u003eWhile experienced owners may handle installation, Yamaha recommends professional installation for correct alignment, sealing, and torque specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs there a break-in period?\u003c\/strong\u003e\u003cbr\u003eYes. Yamaha recommends a brief break-in period, avoiding sustained full-throttle use for the first 10 hours.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46937191317795,"sku":"6G9-45300-03-EK","price":790.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV251617_2.jpg?v=1698800715","url":"https:\/\/partsvu.com\/en-mx\/products\/yamaha-lower-unit-assy-6g9-45300-03-ek","provider":"PartsVu","version":"1.0","type":"link"}