{"product_id":"yamaha-lower-unit-assembly-63d-45300-02-4d","title":"Yamaha Lower Unit Assembly - 63D-45300-02-4D","description":"\u003cp\u003eThis product has been superseded by: 63D-45300-03-8D\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-section-id=\"mcof8f\" data-start=\"0\" data-end=\"72\"\u003eYamaha - Lower Unit Assembly - Drivetrain Component - 63D-45300-02-4D\u003c\/h2\u003e\n\u003chr data-start=\"74\" data-end=\"77\"\u003e\n\u003ch2 data-section-id=\"6lznae\" data-start=\"79\" data-end=\"92\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"93\" data-end=\"584\"\u003eWhen a lower unit starts to go, you’ll notice it fast—rough shifting, vibration, or power not transferring clean to the prop. This Yamaha lower unit assembly is built to restore smooth, reliable operation and get your outboard performing the way it should. It’s designed for proper alignment and durability under load, helping you avoid the constant issues that come with worn internal components. Once installed, you’ll feel the difference in both shifting and overall control on the water.\u003c\/p\u003e\n\u003chr data-start=\"586\" data-end=\"589\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"591\" data-end=\"608\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"609\" data-end=\"976\"\u003e\u003cstrong\u003e• Smooth Power Transfer\u003c\/strong\u003e – Delivers consistent propulsion from engine to propeller.\u003cbr data-start=\"691\" data-end=\"694\"\u003e\u003cstrong\u003e• OEM Yamaha Fitment\u003c\/strong\u003e – Built to factory specifications for precise alignment and installation.\u003cbr data-start=\"788\" data-end=\"791\"\u003e\u003cstrong\u003e• Heavy-Duty Gearcase Design\u003c\/strong\u003e – Designed to handle demanding marine use and engine loads.\u003cbr data-start=\"879\" data-end=\"882\"\u003e\u003cstrong\u003e• Corrosion-Resistant Construction\u003c\/strong\u003e – Holds up in both freshwater and saltwater environments.\u003c\/p\u003e\n\u003chr data-start=\"978\" data-end=\"981\"\u003e\n\u003ch2 data-section-id=\"1b7w7ff\" data-start=\"983\" data-end=\"1015\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"1016\" data-end=\"1095\"\u003e• Compatible with select Yamaha outboards (confirm fitment by model and year)\u003c\/p\u003e\n\u003chr data-start=\"1097\" data-end=\"1100\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"1102\" data-end=\"1110\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1112\" data-end=\"1254\"\u003e\u003cstrong data-start=\"1112\" data-end=\"1167\"\u003eQ: What are signs the lower unit needs replacement?\u003c\/strong\u003e\u003cbr data-start=\"1167\" data-end=\"1170\"\u003eA: Grinding noise, slipping gears, or water in the gear oil are common indicators.\u003c\/p\u003e\n\u003cp data-start=\"1256\" data-end=\"1399\"\u003e\u003cstrong data-start=\"1256\" data-end=\"1301\"\u003eQ: Can I rebuild instead of replacing it?\u003c\/strong\u003e\u003cbr data-start=\"1301\" data-end=\"1304\"\u003eA: Minor issues can be repaired, but major internal damage usually requires full replacement.\u003c\/p\u003e\n\u003cp data-start=\"1401\" data-end=\"1540\"\u003e\u003cstrong data-start=\"1401\" data-end=\"1449\"\u003eQ: Will this improve performance right away?\u003c\/strong\u003e\u003cbr data-start=\"1449\" data-end=\"1452\"\u003eA: Yes, smoother shifting and better power delivery are noticeable after installation.\u003c\/p\u003e\n\u003cp data-start=\"1542\" data-end=\"1665\"\u003e\u003cstrong data-start=\"1542\" data-end=\"1584\"\u003eQ: Is this suitable for saltwater use?\u003c\/strong\u003e\u003cbr data-start=\"1584\" data-end=\"1587\"\u003eA: Yes, with proper maintenance, it performs well in saltwater environments\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46938865860899,"sku":"63D-45300-02-4D","price":2184.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV225383.jpg?v=1698806849","url":"https:\/\/partsvu.com\/en-mx\/products\/yamaha-lower-unit-assembly-63d-45300-02-4d","provider":"PartsVu","version":"1.0","type":"link"}