{"product_id":"yamaha-gear-2-21t-6cb-45571-00-00","title":"Yamaha - Gear 2 (21t) - 6CB-45571-00-00","description":"\u003ch2 data-section-id=\"16csfo1\" data-start=\"0\" data-end=\"77\"\u003eYamaha - Gear 2 (21 Tooth) - Lower Unit Gear Component - 6CB-45571-00-00\u003c\/h2\u003e\n\u003chr data-start=\"79\" data-end=\"82\"\u003e\n\u003ch2 data-section-id=\"6lznae\" data-start=\"84\" data-end=\"97\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"99\" data-end=\"534\"\u003eThis is one of those parts you don’t think about—until the lower unit starts acting up. The Yamaha Gear 2 (21 Tooth) sits deep inside the gearcase, handling load transfer and helping keep everything turning smoothly under power. When it wears, you’ll hear it before you see it—grinding, slipping, or just not feeling right under throttle. Swapping it out restores that solid, confident feel when you drop it into gear and get moving.\u003c\/p\u003e\n\u003chr data-start=\"536\" data-end=\"539\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"541\" data-end=\"558\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"560\" data-end=\"658\"\u003e• \u003cstrong data-start=\"562\" data-end=\"588\"\u003e21-Tooth Gear Design –\u003c\/strong\u003e Engineered to maintain proper gear ratio and smooth power transfer.\u003c\/p\u003e\n\u003cp data-start=\"660\" data-end=\"746\"\u003e• \u003cstrong data-start=\"662\" data-end=\"692\"\u003ePrecision Machined Teeth –\u003c\/strong\u003e Ensures clean engagement and reduces internal wear.\u003c\/p\u003e\n\u003cp data-start=\"748\" data-end=\"841\"\u003e• \u003cstrong data-start=\"750\" data-end=\"772\"\u003eOEM Fit Accuracy –\u003c\/strong\u003e Matches Yamaha factory specs for proper alignment and performance.\u003c\/p\u003e\n\u003cp data-start=\"843\" data-end=\"934\"\u003e• \u003cstrong data-start=\"845\" data-end=\"873\"\u003eHigh Strength Material –\u003c\/strong\u003e Built to handle torque, shock loads, and harsh marine use.\u003c\/p\u003e\n\u003chr data-start=\"936\" data-end=\"939\"\u003e\n\u003ch2 data-section-id=\"1b7w7ff\" data-start=\"941\" data-end=\"973\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"975\" data-end=\"1075\"\u003eVerify compatibility with your specific Yamaha outboard model and part number before installation.\u003c\/p\u003e\n\u003chr data-start=\"1077\" data-end=\"1080\"\u003e\n\u003ch2 data-section-id=\"w36ijk\" data-start=\"1082\" data-end=\"1091\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-start=\"1093\" data-end=\"1227\"\u003e\u003cstrong data-start=\"1093\" data-end=\"1138\"\u003eQ1: What are signs this gear is worn out?\u003c\/strong\u003e\u003cbr data-start=\"1138\" data-end=\"1141\"\u003eA: Grinding noise, slipping under load, or rough shifting are the most common signs.\u003c\/p\u003e\n\u003cp data-start=\"1229\" data-end=\"1395\"\u003e\u003cstrong data-start=\"1229\" data-end=\"1290\"\u003eQ2: Can I replace just this gear instead of the full set?\u003c\/strong\u003e\u003cbr data-start=\"1290\" data-end=\"1293\"\u003eA: You can, but if other gears show wear, replacing the full set is often the better long-term move.\u003c\/p\u003e\n\u003cp data-start=\"1397\" data-end=\"1538\"\u003e\u003cstrong data-start=\"1397\" data-end=\"1442\"\u003eQ3: Will bad gear oil cause this to fail?\u003c\/strong\u003e\u003cbr data-start=\"1442\" data-end=\"1445\"\u003eA: Yes, contaminated or low gear oil is one of the fastest ways to wear out internal gears.\u003c\/p\u003e\n\u003cp data-start=\"1540\" data-end=\"1698\"\u003e\u003cstrong data-start=\"1540\" data-end=\"1587\"\u003eQ4: Is this something I can install myself?\u003c\/strong\u003e\u003cbr data-start=\"1587\" data-end=\"1590\"\u003eA: It requires full lower unit disassembly, so it’s best handled if you’re comfortable with gearcase work.\u003c\/p\u003e\n\u003cp data-start=\"1700\" data-end=\"1838\"\u003e\u003cstrong data-start=\"1700\" data-end=\"1744\"\u003eQ5: Does saltwater use affect this part?\u003c\/strong\u003e\u003cbr data-start=\"1744\" data-end=\"1747\"\u003eA: Indirectly—saltwater can impact seals and oil condition, which then affects gear life.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46937642991907,"sku":"6CB-45571-00-00","price":314.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV243166.jpg?v=1698802502","url":"https:\/\/partsvu.com\/en-au\/products\/yamaha-gear-2-21t-6cb-45571-00-00","provider":"PartsVu","version":"1.0","type":"link"}