{"product_id":"royal-enfield-570047e-primary-chain-tensioner-uce","title":"Royal Enfield 570047\/E – Auto Primary Chain Tensioner Assembly (Genuine OEM)","description":"\u003cp data-start=\"438\" data-end=\"755\"\u003eEnsure smooth power delivery and reduce drivetrain wear with the \u003cstrong data-start=\"503\" data-end=\"567\"\u003eRoyal Enfield 570047\/E Auto Primary Chain Tensioner Assembly\u003c\/strong\u003e. This genuine Royal Enfield component is responsible for \u003cstrong data-start=\"625\" data-end=\"677\"\u003emaintaining optimal tension on the primary chain\u003c\/strong\u003e that connects the crankshaft to the clutch assembly in \u003cstrong data-start=\"733\" data-end=\"754\"\u003eUCE engine models\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"757\" data-end=\"916\"\u003eBy automatically adjusting chain slack over time, it helps reduce vibration, noise, and premature wear — making it a key component for long-term engine health.\u003c\/p\u003e\n\u003chr data-start=\"918\" data-end=\"921\"\u003e\n\u003ch3 data-start=\"923\" data-end=\"947\"\u003e🔧 \u003cstrong data-start=\"930\" data-end=\"947\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"949\" data-end=\"1255\"\u003e\n\u003cli data-start=\"949\" data-end=\"998\"\u003e\n\u003cp data-start=\"951\" data-end=\"998\"\u003eGenuine Royal Enfield part number: \u003cstrong data-start=\"986\" data-end=\"998\"\u003e570047\/E\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"999\" data-end=\"1060\"\u003e\n\u003cp data-start=\"1001\" data-end=\"1060\"\u003eMaintains consistent tension on the \u003cstrong data-start=\"1037\" data-end=\"1060\"\u003eprimary drive chain\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1061\" data-end=\"1125\"\u003e\n\u003cp data-start=\"1063\" data-end=\"1125\"\u003eAuto-adjusting spring-loaded mechanism for reduced maintenance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1126\" data-end=\"1192\"\u003e\n\u003cp data-start=\"1128\" data-end=\"1192\"\u003ePrevents chain slippage and abnormal noise from the primary case\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1193\" data-end=\"1255\"\u003e\n\u003cp data-start=\"1195\" data-end=\"1255\"\u003eImproves clutch engagement and smoothness during gear shifts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1257\" data-end=\"1260\"\u003e\n\u003ch3 data-start=\"1262\" data-end=\"1286\"\u003e✅ \u003cstrong data-start=\"1268\" data-end=\"1286\"\u003eCompatibility:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"1288\" data-end=\"1430\"\u003e\n\u003cli data-start=\"1288\" data-end=\"1332\"\u003e\n\u003cp data-start=\"1290\" data-end=\"1332\"\u003e\u003cstrong data-start=\"1290\" data-end=\"1311\"\u003eClassic 350 (UCE)\u003c\/strong\u003e – BS3 \u0026amp; BS4 models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1333\" data-end=\"1358\"\u003e\n\u003cp data-start=\"1335\" data-end=\"1358\"\u003e\u003cstrong data-start=\"1335\" data-end=\"1356\"\u003eClassic 500 (UCE)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1359\" data-end=\"1381\"\u003e\n\u003cp data-start=\"1361\" data-end=\"1381\"\u003e\u003cstrong data-start=\"1361\" data-end=\"1379\"\u003eBullet 350 UCE\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1382\" data-end=\"1404\"\u003e\n\u003cp data-start=\"1384\" data-end=\"1404\"\u003e\u003cstrong data-start=\"1384\" data-end=\"1402\"\u003eBullet 500 UCE\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1405\" data-end=\"1430\"\u003e\n\u003cp data-start=\"1407\" data-end=\"1430\"\u003e\u003cstrong data-start=\"1407\" data-end=\"1428\"\u003eElectra 350 (UCE)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1432\" data-end=\"1539\"\u003e❌ Not compatible with J-series bikes like Classic Reborn, Meteor 350, Hunter 350, or Himalayan\/650cc series\u003c\/p\u003e\n\u003chr data-start=\"1541\" data-end=\"1544\"\u003e\n\u003ch3 data-start=\"1546\" data-end=\"1574\"\u003e📦 \u003cstrong data-start=\"1553\" data-end=\"1574\"\u003ePackage Includes:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"1576\" data-end=\"1695\"\u003e\n\u003cli data-start=\"1576\" data-end=\"1656\"\u003e\n\u003cp data-start=\"1578\" data-end=\"1656\"\u003e1 x Auto Primary Chain Tensioner Assembly (Pre-fitted with spring and plunger)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1657\" data-end=\"1695\"\u003e\n\u003cp data-start=\"1659\" data-end=\"1695\"\u003eFactory-sealed original RE packaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2385\" data-end=\"2422\"\u003e❓ \u003cstrong data-start=\"2391\" data-end=\"2422\"\u003eFrequently Asked Questions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"2424\" data-end=\"2598\"\u003e\u003cstrong data-start=\"2424\" data-end=\"2473\"\u003eQ1. What does the primary chain tensioner do?\u003c\/strong\u003e\u003cbr data-start=\"2473\" data-end=\"2476\"\u003eIt maintains correct tension in the primary chain that links the crankshaft to the clutch, ensuring smooth power transfer.\u003c\/p\u003e\n\u003cp data-start=\"2600\" data-end=\"2785\"\u003e\u003cstrong data-start=\"2600\" data-end=\"2640\"\u003eQ2. When should I replace this part?\u003c\/strong\u003e\u003cbr data-start=\"2640\" data-end=\"2643\"\u003eIf you hear rattling or knocking sounds from the clutch side, or feel inconsistent clutch engagement, it may be time to replace the tensioner.\u003c\/p\u003e\n\u003cp data-start=\"2787\" data-end=\"2921\"\u003e\u003cstrong data-start=\"2787\" data-end=\"2846\"\u003eQ3. Is it compatible with the new Reborn or Meteor 350?\u003c\/strong\u003e\u003cbr data-start=\"2846\" data-end=\"2849\"\u003eNo. Those bikes use a J-series engine and a different drivetrain layout.\u003c\/p\u003e\n\u003cp data-start=\"2923\" data-end=\"3064\"\u003e\u003cstrong data-start=\"2923\" data-end=\"2972\"\u003eQ4. Is this an automatic or manual tensioner?\u003c\/strong\u003e\u003cbr data-start=\"2972\" data-end=\"2975\"\u003eThis is an \u003cstrong data-start=\"2986\" data-end=\"3009\"\u003eautomatic tensioner\u003c\/strong\u003e with a spring mechanism that adjusts slack on its own.\u003c\/p\u003e\n\u003cp data-start=\"3066\" data-end=\"3172\"\u003e\u003cstrong data-start=\"3066\" data-end=\"3100\"\u003eQ5. Is it an original RE part?\u003c\/strong\u003e\u003cbr data-start=\"3100\" data-end=\"3103\"\u003eYes, this is a genuine OEM Royal Enfield part used in factory builds.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50165648982311,"sku":"","price":278.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/035EB072-761B-4EEA-A3F5-2651628F7741.jpg?v=1751178887","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-570047e-primary-chain-tensioner-uce","provider":"UNDER THE HOOD","version":"1.0","type":"link"}