{"product_id":"yamaha-lower-unit-assembly-64e-45300-03-8d","title":"Yamaha Lower Unit Assembly - 64E-45300-03-8D","description":"\u003ch2 data-section-id=\"17zgh7k\" data-start=\"0\" data-end=\"77\"\u003eYamaha - Lower Unit Assembly - Gearcase \u0026amp; Power Transfer - 64E-45300-03-8D\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=\"514\"\u003eOn these mid to high horsepower Yamahas, the lower unit is what really takes the load every time you throttle up. I’ve seen plenty that start out with small issues—noise, rough shifting—and then go downhill fast. Swapping in a complete assembly like this gets everything back to smooth, reliable operation without chasing internal problems. It’s the kind of fix that lets you run hard again without second guessing it.\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=\"921\"\u003e\n\u003cli data-section-id=\"19yrus5\" data-start=\"537\" data-end=\"644\"\u003e\n\u003cstrong data-start=\"539\" data-end=\"569\"\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=\"645\" data-end=\"728\"\u003e\n\u003cstrong data-start=\"647\" data-end=\"672\"\u003eSmooth Power Transfer\u003c\/strong\u003e – Delivers consistent engine output to the propeller.\u003c\/li\u003e\n\u003cli data-section-id=\"wvflmr\" data-start=\"729\" data-end=\"828\"\u003e\n\u003cstrong data-start=\"731\" data-end=\"767\"\u003eCorrosion-Resistant Construction\u003c\/strong\u003e – Built to handle saltwater exposure and harsh marine use.\u003c\/li\u003e\n\u003cli data-section-id=\"12sgrnp\" data-start=\"829\" data-end=\"921\"\u003e\n\u003cstrong data-start=\"831\" data-end=\"859\"\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=\"923\" data-end=\"926\"\u003e\n\u003ch2 data-section-id=\"1qx5o2j\" data-start=\"928\" data-end=\"958\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"959\" data-end=\"1106\"\u003eFits Yamaha outboard engines in the 150 to 200 horsepower range. Commonly used on offshore boats, center consoles, and larger recreational vessels.\u003c\/p\u003e\n\u003chr data-start=\"1108\" data-end=\"1111\"\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"1113\" data-end=\"1119\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1121\" data-end=\"1292\"\u003e\u003cstrong data-start=\"1121\" data-end=\"1182\"\u003eQ: What are common signs my lower unit needs replacement?\u003c\/strong\u003e\u003cbr data-start=\"1182\" data-end=\"1185\"\u003e\u003cstrong data-start=\"1185\" data-end=\"1191\"\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=\"1294\" data-end=\"1434\"\u003e\u003cstrong data-start=\"1294\" data-end=\"1354\"\u003eQ: Can I keep running if the lower unit is making noise?\u003c\/strong\u003e\u003cbr data-start=\"1354\" data-end=\"1357\"\u003e\u003cstrong data-start=\"1357\" data-end=\"1363\"\u003eA:\u003c\/strong\u003e It’s risky—continued use can lead to more damage and eventual failure.\u003c\/p\u003e\n\u003cp data-start=\"1436\" data-end=\"1568\"\u003e\u003cstrong data-start=\"1436\" data-end=\"1496\"\u003eQ: Do I need to check gear oil before running this unit?\u003c\/strong\u003e\u003cbr data-start=\"1496\" data-end=\"1499\"\u003e\u003cstrong data-start=\"1499\" data-end=\"1505\"\u003eA:\u003c\/strong\u003e Yes, always verify it’s filled to the proper level before use.\u003c\/p\u003e\n\u003cp data-start=\"1570\" data-end=\"1732\"\u003e\u003cstrong data-start=\"1570\" data-end=\"1621\"\u003eQ: How does saltwater use affect this assembly?\u003c\/strong\u003e\u003cbr data-start=\"1621\" data-end=\"1624\"\u003e\u003cstrong data-start=\"1624\" data-end=\"1630\"\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=\"1734\" data-end=\"1893\"\u003e\u003cstrong data-start=\"1734\" data-end=\"1783\"\u003eQ: Is installation something I can do myself?\u003c\/strong\u003e\u003cbr data-start=\"1783\" data-end=\"1786\"\u003e\u003cstrong data-start=\"1786\" data-end=\"1792\"\u003eA:\u003c\/strong\u003e If you’ve handled lower unit swaps before, it’s manageable, but proper alignment and torque are key.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46938697498915,"sku":"64E-45300-03-8D","price":3095.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV227617.jpg?v=1698806312","url":"https:\/\/partsvu.com\/en-au\/products\/yamaha-lower-unit-assembly-64e-45300-03-8d","provider":"PartsVu","version":"1.0","type":"link"}