{"product_id":"yamaha-lower-unit-assembly-60-70-hp-2-stroke-models-6h3-45300-20-8d","title":"Yamaha Lower Unit Assembly - 60 \u0026 70 HP 2-Stroke Models - 6H3-45300-20-8D","description":"\u003ch2 data-section-id=\"8bb3f5\" data-start=\"106\" data-end=\"197\"\u003eYamaha - Lower Unit Assembly 60\/70 HP - Complete Drivetrain Assembly - 6H3-45300-20-8D\u003c\/h2\u003e\n\u003chr data-start=\"199\" data-end=\"202\"\u003e\n\u003ch2 data-section-id=\"6lznae\" data-start=\"204\" data-end=\"217\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"219\" data-end=\"674\"\u003eThe Yamaha Lower Unit Assembly 60\/70 HP | 6H3-45300-20-8D is what takes all that engine power and actually puts it to work in the water. When a lower unit starts going bad, you’ll feel it right away—noise, vibration, or loss of push at the prop. Instead of tearing into gears and chasing problems, swapping the full assembly is usually the cleanest fix. It gives you a solid, dependable setup so you can get back on the water without second-guessing it.\u003c\/p\u003e\n\u003chr data-start=\"676\" data-end=\"679\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"681\" data-end=\"698\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"700\" data-end=\"813\"\u003e• \u003cstrong data-start=\"702\" data-end=\"736\"\u003eComplete Drivetrain Assembly –\u003c\/strong\u003e Replaces internal gears and components in one unit for reliable operation.\u003c\/p\u003e\n\u003cp data-start=\"815\" data-end=\"928\"\u003e• \u003cstrong data-start=\"817\" data-end=\"840\"\u003eOEM Fit Precision –\u003c\/strong\u003e Built to Yamaha specifications for proper alignment and straightforward installation.\u003c\/p\u003e\n\u003cp data-start=\"930\" data-end=\"1026\"\u003e• \u003cstrong data-start=\"932\" data-end=\"959\"\u003eSmooth Power Transfer –\u003c\/strong\u003e Supports efficient thrust and consistent performance under load.\u003c\/p\u003e\n\u003cp data-start=\"1028\" data-end=\"1134\"\u003e• \u003cstrong data-start=\"1030\" data-end=\"1068\"\u003eCorrosion-Resistant Construction –\u003c\/strong\u003e Designed to handle harsh marine environments and long-term use.\u003c\/p\u003e\n\u003chr data-start=\"1136\" data-end=\"1139\"\u003e\n\u003ch2 data-section-id=\"1b7w7ff\" data-start=\"1141\" data-end=\"1173\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"1175\" data-end=\"1208\"\u003e• 60 2004-2005\u003cbr data-start=\"1189\" data-end=\"1192\"\u003e• 70 2004-2008\u003c\/p\u003e\n\u003chr data-start=\"1210\" data-end=\"1213\"\u003e\n\u003ch2 data-section-id=\"w36ijk\" data-start=\"1215\" data-end=\"1224\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-start=\"1226\" data-end=\"1378\"\u003e\u003cstrong data-start=\"1226\" data-end=\"1280\"\u003eQ1: What are signs the lower unit needs replacing?\u003c\/strong\u003e\u003cbr data-start=\"1280\" data-end=\"1283\"\u003eA: Grinding noise, vibration, water in gear oil, or loss of propulsion are common indicators.\u003c\/p\u003e\n\u003cp data-start=\"1380\" data-end=\"1534\"\u003e\u003cstrong data-start=\"1380\" data-end=\"1438\"\u003eQ2: Is it better to rebuild or replace the lower unit?\u003c\/strong\u003e\u003cbr data-start=\"1438\" data-end=\"1441\"\u003eA: If there’s internal damage, replacing the full unit is usually faster and more reliable.\u003c\/p\u003e\n\u003cp data-start=\"1536\" data-end=\"1680\"\u003e\u003cstrong data-start=\"1536\" data-end=\"1585\"\u003eQ3: Does this assembly come ready to install?\u003c\/strong\u003e\u003cbr data-start=\"1585\" data-end=\"1588\"\u003eA: Yes, it’s a complete unit, but proper alignment during installation is still important.\u003c\/p\u003e\n\u003cp data-start=\"1682\" data-end=\"1815\"\u003e\u003cstrong data-start=\"1682\" data-end=\"1730\"\u003eQ4: How does saltwater use affect this part?\u003c\/strong\u003e\u003cbr data-start=\"1730\" data-end=\"1733\"\u003eA: Saltwater can cause corrosion over time, so flushing and maintenance are key.\u003c\/p\u003e\n\u003cp data-start=\"1817\" data-end=\"1962\"\u003e\u003cstrong data-start=\"1817\" data-end=\"1868\"\u003eQ5: Will this improve handling and performance?\u003c\/strong\u003e\u003cbr data-start=\"1868\" data-end=\"1871\"\u003eA: Yes, a fresh lower unit restores smooth power transfer and overall engine performance.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46937087836451,"sku":"6H3-45300-20-8D","price":2589.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV843715.jpg?v=1698800208","url":"https:\/\/partsvu.com\/fr\/products\/yamaha-lower-unit-assembly-60-70-hp-2-stroke-models-6h3-45300-20-8d","provider":"PartsVu","version":"1.0","type":"link"}