{"product_id":"yamaha-lower-unit-assembly-lz300-6d1-45300-20-8d-see-description-for-applicable-models","title":"Yamaha Lower Unit Assembly - LZ300 - 6D1-45300-20-8D - See Description for Applicable Models","description":"\u003ch2 data-section-id=\"98zzoy\" data-start=\"0\" data-end=\"68\"\u003eYamaha - LZ300 Lower Unit Assembly - Lower Unit - 6D1-45300-20-8D\u003c\/h2\u003e\n\u003chr data-start=\"70\" data-end=\"73\"\u003e\n\u003ch2 data-section-id=\"6lznae\" data-start=\"75\" data-end=\"88\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"89\" data-end=\"500\"\u003eWorking on LZ300 setups, you learn quick that the lower unit has to be solid from the start. These motors push hard, and if the gearcase isn’t right, you’ll feel it in the way it shifts and runs. I’ve swapped out worn units before, and the difference is immediate—quieter, smoother, and more predictable on throttle. This is the kind of part you put in when you want to trust your setup every time you head out.\u003c\/p\u003e\n\u003chr data-start=\"502\" data-end=\"505\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"507\" data-end=\"524\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"525\" data-end=\"1041\"\u003e• \u003cstrong data-start=\"527\" data-end=\"559\"\u003eHigh Horsepower Ready Design\u003c\/strong\u003e – Built to handle the demands of large Yamaha outboards under load.\u003cbr data-start=\"627\" data-end=\"630\"\u003e• \u003cstrong data-start=\"632\" data-end=\"658\"\u003eSmooth Gear Engagement\u003c\/strong\u003e – Supports clean shifting and consistent performance through the drivetrain.\u003cbr data-start=\"735\" data-end=\"738\"\u003e• \u003cstrong data-start=\"740\" data-end=\"772\"\u003ePrecision Internal Alignment\u003c\/strong\u003e – Ensures proper gear mesh to reduce vibration and wear.\u003cbr data-start=\"829\" data-end=\"832\"\u003e• \u003cstrong data-start=\"834\" data-end=\"865\"\u003eDurable Marine Construction\u003c\/strong\u003e – Holds up against harsh freshwater and saltwater conditions.\u003cbr data-start=\"927\" data-end=\"930\"\u003e• \u003cstrong data-start=\"932\" data-end=\"958\"\u003eDirect Fit Replacement\u003c\/strong\u003e – Designed to match Yamaha specifications for proper installation and operation.\u003c\/p\u003e\n\u003chr data-start=\"1043\" data-end=\"1046\"\u003e\n\u003ch2 data-section-id=\"1b7w7ff\" data-start=\"1048\" data-end=\"1080\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"45\" data-end=\"53\"\u003e• LZ300\u003c\/p\u003e\n\u003chr data-start=\"1240\" data-end=\"1243\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"1245\" data-end=\"1253\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1255\" data-end=\"1416\"\u003e\u003cstrong data-start=\"1255\" data-end=\"1309\"\u003eQ: What does it mean that this part is superseded?\u003c\/strong\u003e\u003cbr data-start=\"1309\" data-end=\"1312\"\u003e\u003cstrong data-start=\"1312\" data-end=\"1318\"\u003eA:\u003c\/strong\u003e It means Yamaha has released a newer version of this lower unit, which replaces this part number.\u003c\/p\u003e\n\u003cp data-start=\"1418\" data-end=\"1592\"\u003e\u003cstrong data-start=\"1418\" data-end=\"1479\"\u003eQ: Can I still use this version instead of the newer one?\u003c\/strong\u003e\u003cbr data-start=\"1479\" data-end=\"1482\"\u003e\u003cstrong data-start=\"1482\" data-end=\"1488\"\u003eA:\u003c\/strong\u003e In many cases yes, but it’s best to confirm fitment since the updated version may include improvements.\u003c\/p\u003e\n\u003cp data-start=\"1594\" data-end=\"1754\"\u003e\u003cstrong data-start=\"1594\" data-end=\"1647\"\u003eQ: What are common signs a lower unit is failing?\u003c\/strong\u003e\u003cbr data-start=\"1647\" data-end=\"1650\"\u003e\u003cstrong data-start=\"1650\" data-end=\"1656\"\u003eA:\u003c\/strong\u003e Grinding, hard shifting, vibration, or water in the gear oil are all signs something isn’t right.\u003c\/p\u003e\n\u003cp data-start=\"1756\" data-end=\"1894\"\u003e\u003cstrong data-start=\"1756\" data-end=\"1794\"\u003eQ: Is this built for offshore use?\u003c\/strong\u003e\u003cbr data-start=\"1794\" data-end=\"1797\"\u003e\u003cstrong data-start=\"1797\" data-end=\"1803\"\u003eA:\u003c\/strong\u003e Yes, it’s designed to handle the demands of high horsepower engines in tougher conditions.\u003c\/p\u003e\n\u003cp data-start=\"1896\" data-end=\"2059\"\u003e\u003cstrong data-start=\"1896\" data-end=\"1942\"\u003eQ: What should I check after installation?\u003c\/strong\u003e\u003cbr data-start=\"1942\" data-end=\"1945\"\u003e\u003cstrong data-start=\"1945\" data-end=\"1951\"\u003eA:\u003c\/strong\u003e Make sure alignment is correct, gear oil is filled properly, and shifting feels smooth before running hard.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46937564840227,"sku":"6D1-45300-20-8D","price":5283.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV244279.jpg?v=1698802245","url":"https:\/\/partsvu.com\/en-ca\/products\/yamaha-lower-unit-assembly-lz300-6d1-45300-20-8d-see-description-for-applicable-models","provider":"PartsVu","version":"1.0","type":"link"}