{"product_id":"yamaha-lower-unit-assembly-64f-45300-20-8d","title":"Yamaha Lower Unit Assembly - 64F-45300-20-8D","description":"\u003ch2 data-section-id=\"1r0m3gi\" data-start=\"0\" data-end=\"77\"\u003eYamaha - Lower Unit Assembly - Gearcase \u0026amp; Power Transfer - 64F-45300-20-8D\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=\"513\"\u003eLower units are one of those components you can’t afford to ignore when they start wearing out. I’ve seen engines lose that smooth feel or start making noise, and it almost always traces back down here. Swapping in a complete Yamaha assembly like this gets everything back to tight, reliable operation without guessing what’s worn inside. Once it’s installed, you’ll feel that clean shift and steady power right away.\u003c\/p\u003e\n\u003chr data-start=\"515\" data-end=\"518\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"520\" data-end=\"535\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"536\" data-end=\"920\"\u003e\n\u003cli data-section-id=\"19yrus5\" data-start=\"536\" data-end=\"643\"\u003e\n\u003cstrong data-start=\"538\" data-end=\"568\"\u003eComplete Gearcase Assembly\u003c\/strong\u003e – Includes internal gears and housing for a full lower unit replacement.\u003c\/li\u003e\n\u003cli data-section-id=\"13q8tex\" data-start=\"644\" data-end=\"727\"\u003e\n\u003cstrong data-start=\"646\" data-end=\"671\"\u003eSmooth Power Transfer\u003c\/strong\u003e – Delivers consistent engine output to the propeller.\u003c\/li\u003e\n\u003cli data-section-id=\"1o6geph\" data-start=\"728\" data-end=\"827\"\u003e\n\u003cstrong data-start=\"730\" data-end=\"766\"\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=\"828\" data-end=\"920\"\u003e\n\u003cstrong data-start=\"830\" data-end=\"858\"\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=\"922\" data-end=\"925\"\u003e\n\u003ch2 data-section-id=\"1qx5o2j\" data-start=\"927\" data-end=\"957\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"958\" data-end=\"1141\"\u003eFits Yamaha outboard engines that utilize this style of lower unit assembly. Commonly used on mid-range horsepower outboards across fishing boats, bay boats, and recreational vessels.\u003c\/p\u003e\n\u003chr data-start=\"1143\" data-end=\"1146\"\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"1148\" data-end=\"1154\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1156\" data-end=\"1319\"\u003e\u003cstrong data-start=\"1156\" data-end=\"1214\"\u003eQ: What are the signs my lower unit needs replacement?\u003c\/strong\u003e\u003cbr data-start=\"1214\" data-end=\"1217\"\u003e\u003cstrong data-start=\"1217\" data-end=\"1223\"\u003eA:\u003c\/strong\u003e Grinding noise, slipping gears, water in gear oil, or rough shifting are all common indicators.\u003c\/p\u003e\n\u003cp data-start=\"1321\" data-end=\"1464\"\u003e\u003cstrong data-start=\"1321\" data-end=\"1385\"\u003eQ: Can I continue running if the lower unit is making noise?\u003c\/strong\u003e\u003cbr data-start=\"1385\" data-end=\"1388\"\u003e\u003cstrong data-start=\"1388\" data-end=\"1394\"\u003eA:\u003c\/strong\u003e It’s risky—damage can get worse quickly and lead to complete failure.\u003c\/p\u003e\n\u003cp data-start=\"1466\" data-end=\"1601\"\u003e\u003cstrong data-start=\"1466\" data-end=\"1524\"\u003eQ: Do I need to check gear oil before using this unit?\u003c\/strong\u003e\u003cbr data-start=\"1524\" data-end=\"1527\"\u003e\u003cstrong data-start=\"1527\" data-end=\"1533\"\u003eA:\u003c\/strong\u003e Yes, always confirm it’s filled to the proper level before running.\u003c\/p\u003e\n\u003cp data-start=\"1603\" data-end=\"1770\"\u003e\u003cstrong data-start=\"1603\" data-end=\"1662\"\u003eQ: How does saltwater use affect lower units over time?\u003c\/strong\u003e\u003cbr data-start=\"1662\" data-end=\"1665\"\u003e\u003cstrong data-start=\"1665\" data-end=\"1671\"\u003eA:\u003c\/strong\u003e Salt can cause corrosion and wear, especially around seals, so regular flushing helps extend life.\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"1938\"\u003e\u003cstrong data-start=\"1772\" data-end=\"1825\"\u003eQ: Is installation something I can handle myself?\u003c\/strong\u003e\u003cbr data-start=\"1825\" data-end=\"1828\"\u003e\u003cstrong data-start=\"1828\" data-end=\"1834\"\u003eA:\u003c\/strong\u003e If you’ve done lower unit swaps before, it’s manageable, but proper alignment and torque are important.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46938695106851,"sku":"64F-45300-20-8D","price":4780.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV227674.jpg?v=1698806301","url":"https:\/\/partsvu.com\/en-mx\/products\/yamaha-lower-unit-assembly-64f-45300-20-8d","provider":"PartsVu","version":"1.0","type":"link"}