{"product_id":"yamaha-lower-unit-assembly-64m-45300-03-na","title":"Yamaha Lower Unit Assembly - 64M-45300-03-NA","description":"\u003ch2 data-section-id=\"d7imjf\" data-start=\"0\" data-end=\"77\"\u003eYamaha - Lower Unit Assembly - Gearcase \u0026amp; Power Transfer - 64M-45300-03-NA\u003c\/h2\u003e\n\u003chr data-start=\"79\" data-end=\"82\"\u003e\n\u003ch2 data-section-id=\"rzkdgm\" data-start=\"84\" data-end=\"95\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"96\" data-end=\"514\"\u003eLower units take the brunt of the work, especially if you’re running often or in rough conditions. When they start getting noisy or shifting isn’t as clean, it’s usually time to replace instead of repair. I’ve installed plenty of these, and a fresh assembly like this brings everything back to smooth, dependable operation. It’s the kind of upgrade that makes your motor feel solid again every time you put it in gear.\u003c\/p\u003e\n\u003chr data-start=\"516\" data-end=\"519\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"521\" data-end=\"536\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"537\" data-end=\"923\"\u003e\n\u003cli data-section-id=\"msjns6\" data-start=\"537\" data-end=\"646\"\u003e\n\u003cstrong data-start=\"539\" data-end=\"569\"\u003eComplete Gearcase Assembly\u003c\/strong\u003e – Includes internal gearing and housing for a full lower unit replacement.\u003c\/li\u003e\n\u003cli data-section-id=\"13q8tex\" data-start=\"647\" data-end=\"730\"\u003e\n\u003cstrong data-start=\"649\" data-end=\"674\"\u003eSmooth Power Transfer\u003c\/strong\u003e – Delivers consistent engine output to the propeller.\u003c\/li\u003e\n\u003cli data-section-id=\"1o6geph\" data-start=\"731\" data-end=\"830\"\u003e\n\u003cstrong data-start=\"733\" data-end=\"769\"\u003eCorrosion-Resistant Construction\u003c\/strong\u003e – Built to handle saltwater and harsh marine environments.\u003c\/li\u003e\n\u003cli data-section-id=\"12sgrnp\" data-start=\"831\" data-end=\"923\"\u003e\n\u003cstrong data-start=\"833\" data-end=\"861\"\u003eReliable Gear Engagement\u003c\/strong\u003e – Provides clean shifting with reduced noise and vibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"925\" data-end=\"928\"\u003e\n\u003ch2 data-section-id=\"1qx5o2j\" data-start=\"930\" data-end=\"960\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"961\" data-end=\"1147\"\u003eFits Yamaha outboard engines that utilize this style of lower unit assembly. Commonly used on mid- to high-horsepower outboards across fishing boats, bay boats, and recreational vessels.\u003c\/p\u003e\n\u003chr data-start=\"1149\" data-end=\"1152\"\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"1154\" data-end=\"1160\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1162\" data-end=\"1325\"\u003e\u003cstrong data-start=\"1162\" data-end=\"1215\"\u003eQ: What are common signs of a failing lower unit?\u003c\/strong\u003e\u003cbr data-start=\"1215\" data-end=\"1218\"\u003e\u003cstrong data-start=\"1218\" data-end=\"1224\"\u003eA:\u003c\/strong\u003e Grinding noise, slipping gears, water in gear oil, or hard shifting are all signs something’s wrong.\u003c\/p\u003e\n\u003cp data-start=\"1327\" data-end=\"1462\"\u003e\u003cstrong data-start=\"1327\" data-end=\"1383\"\u003eQ: Can I continue running with a damaged lower unit?\u003c\/strong\u003e\u003cbr data-start=\"1383\" data-end=\"1386\"\u003e\u003cstrong data-start=\"1386\" data-end=\"1392\"\u003eA:\u003c\/strong\u003e It’s risky—damage can get worse quickly and lead to complete failure.\u003c\/p\u003e\n\u003cp data-start=\"1464\" data-end=\"1593\"\u003e\u003cstrong data-start=\"1464\" data-end=\"1520\"\u003eQ: Do I need to add gear oil before using this unit?\u003c\/strong\u003e\u003cbr data-start=\"1520\" data-end=\"1523\"\u003e\u003cstrong data-start=\"1523\" data-end=\"1529\"\u003eA:\u003c\/strong\u003e Yes, always check and fill to the correct level before running.\u003c\/p\u003e\n\u003cp data-start=\"1595\" data-end=\"1757\"\u003e\u003cstrong data-start=\"1595\" data-end=\"1646\"\u003eQ: How does saltwater use affect this assembly?\u003c\/strong\u003e\u003cbr data-start=\"1646\" data-end=\"1649\"\u003e\u003cstrong data-start=\"1649\" data-end=\"1655\"\u003eA:\u003c\/strong\u003e Salt can accelerate corrosion, especially around seals and housing, so regular flushing is important.\u003c\/p\u003e\n\u003cp data-start=\"1759\" data-end=\"1914\"\u003e\u003cstrong data-start=\"1759\" data-end=\"1808\"\u003eQ: Is installation something I can do myself?\u003c\/strong\u003e\u003cbr data-start=\"1808\" data-end=\"1811\"\u003e\u003cstrong data-start=\"1811\" data-end=\"1817\"\u003eA:\u003c\/strong\u003e If you’ve done lower unit swaps before, it’s manageable, but proper alignment and torque matter.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46938686325027,"sku":"64M-45300-03-NA","price":3023.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV227902.jpg?v=1698806261","url":"https:\/\/partsvu.com\/en-mx\/products\/yamaha-lower-unit-assembly-64m-45300-03-na","provider":"PartsVu","version":"1.0","type":"link"}