{"product_id":"yamaha-lower-unit-assembly-c25-689-45300-16-4d-see-description-for-applicable-models","title":"Yamaha Lower Unit Assembly - C25 - 689-45300-16-4D - See Description for Applicable Models","description":"\u003cp\u003eThis product has been superseded by: \u003ca href=\"https:\/\/partsvu.com\/products\/yamaha-lower-unit-assembly-689-45300-18-8d\"\u003e689-45300-18-8D\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-section-id=\"1cixn51\" data-start=\"0\" data-end=\"74\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3\" data-end=\"74\"\u003eYamaha - Lower Unit Assembly - Gearcase Component - C25 - 689-45300-16-4D\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003chr data-start=\"76\" data-end=\"79\"\u003e\n\u003ch2 data-section-id=\"1og5t7q\" data-start=\"81\" data-end=\"96\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"84\" data-end=\"96\"\u003eOverview\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"97\" data-end=\"696\"\u003eThe lower unit assembly is a vital component of your Yamaha outboard, responsible for transferring engine power to the propeller for smooth and efficient propulsion. Designed with Yamaha’s precision engineering, this assembly ensures reliable performance, responsive handling, and consistent operation on the water. Built from high-quality materials, it offers excellent resistance to corrosion and wear, making it suitable for both freshwater and saltwater environments. Replacing a worn or damaged lower unit helps restore proper power transfer and keeps your outboard running at peak performance.\u003c\/p\u003e\n\u003chr data-start=\"698\" data-end=\"701\"\u003e\n\u003ch2 data-section-id=\"1j5qwet\" data-start=\"703\" data-end=\"722\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"706\" data-end=\"722\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"724\" data-end=\"1114\"\u003e\n\u003cli data-section-id=\"1u1sykn\" data-start=\"724\" data-end=\"816\"\u003e\n\u003cstrong data-start=\"726\" data-end=\"756\"\u003eComplete Gearcase Assembly\u003c\/strong\u003e – Transfers engine power to the propeller for propulsion.\u003c\/li\u003e\n\u003cli data-section-id=\"154ryp6\" data-start=\"817\" data-end=\"910\"\u003e\n\u003cstrong data-start=\"819\" data-end=\"851\"\u003eSmooth \u0026amp; Efficient Operation\u003c\/strong\u003e – Supports reliable shifting and consistent performance.\u003c\/li\u003e\n\u003cli data-section-id=\"brexuh\" data-start=\"911\" data-end=\"1006\"\u003e\n\u003cstrong data-start=\"913\" data-end=\"944\"\u003eDurable Marine Construction\u003c\/strong\u003e – Built to resist corrosion and wear in harsh environments.\u003c\/li\u003e\n\u003cli data-section-id=\"1rmju03\" data-start=\"1007\" data-end=\"1114\"\u003e\n\u003cstrong data-start=\"1009\" data-end=\"1031\"\u003eOEM Yamaha Fitment\u003c\/strong\u003e – Designed to factory specifications for proper alignment and easy installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1116\" data-end=\"1119\"\u003e\n\u003ch2 data-section-id=\"1ww02hn\" data-start=\"1121\" data-end=\"1155\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1124\" data-end=\"1155\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1157\" data-end=\"1225\"\u003eCompatible with Yamaha C25 outboards using this lower unit assembly.\u003c\/p\u003e\n\u003chr data-start=\"1227\" data-end=\"1230\"\u003e\n\u003ch2 data-section-id=\"elc90z\" data-start=\"1232\" data-end=\"1242\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1235\" data-end=\"1242\"\u003eFAQ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1244\" data-end=\"1400\"\u003e\u003cstrong data-start=\"1244\" data-end=\"1286\"\u003eQ: What does a lower unit assembly do?\u003c\/strong\u003e\u003cbr data-start=\"1286\" data-end=\"1289\"\u003eA: It transfers engine power to the propeller and houses the gears for forward, neutral, and reverse operation.\u003c\/p\u003e\n\u003cp data-start=\"1402\" data-end=\"1542\"\u003e\u003cstrong data-start=\"1402\" data-end=\"1457\"\u003eQ: What are signs the lower unit needs replacement?\u003c\/strong\u003e\u003cbr data-start=\"1457\" data-end=\"1460\"\u003eA: Grinding noise, vibration, shifting issues, or water contamination in gear oil.\u003c\/p\u003e\n\u003cp data-start=\"1544\" data-end=\"1663\"\u003e\u003cstrong data-start=\"1544\" data-end=\"1601\"\u003eQ: Will replacing the lower unit improve performance?\u003c\/strong\u003e\u003cbr data-start=\"1601\" data-end=\"1604\"\u003eA: Yes, especially if the existing unit is worn or damaged.\u003c\/p\u003e\n\u003cp data-start=\"1665\" data-end=\"1767\"\u003e\u003cstrong data-start=\"1665\" data-end=\"1700\"\u003eQ: Is this a complete assembly?\u003c\/strong\u003e\u003cbr data-start=\"1700\" data-end=\"1703\"\u003eA: Yes, it is a full gearcase assembly designed for replacement.\u003c\/p\u003e\n\u003cp data-start=\"1769\" data-end=\"1888\"\u003e\u003cstrong data-start=\"1769\" data-end=\"1802\"\u003eQ: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"1802\" data-end=\"1805\"\u003eA: It typically requires mechanical experience and is often handled by technicians.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46938247561507,"sku":"689-45300-16-4D","price":1121.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV234754.jpg?v=1698804775","url":"https:\/\/partsvu.com\/en-mx\/products\/yamaha-lower-unit-assembly-c25-689-45300-16-4d-see-description-for-applicable-models","provider":"PartsVu","version":"1.0","type":"link"}