{"product_id":"genuine-royal-enfield-spark-plug-ur6dc-572328b","title":"Genuine Royal Enfield Spark Plug UR6DC (M10) – Bullet 350\/500 UCE, Classic 350, Classic 500 EFI, Electra 350 UCE, Thunderbird 500 | OEM 572328\/B","description":"\u003cp data-end=\"602\" data-start=\"276\"\u003eIf your Royal Enfield is showing hard starts, misfires, rough idle, or reduced pickup, the first component to bring back to OEM spec is the spark plug. \u003cstrong data-end=\"454\" data-start=\"428\"\u003eRoyal Enfield 572328\/B\u003c\/strong\u003e is the \u003cstrong data-end=\"509\" data-start=\"462\"\u003egenuine factory-spec Spark Plug UR6DC (M10)\u003c\/strong\u003e used across multiple UCE-era 350cc and 500cc models. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"976\" data-start=\"604\"\u003eUnlike generic “compatible” plugs that often vary in heat range or electrode quality, the \u003cstrong data-end=\"707\" data-start=\"694\"\u003eOEM UR6DC\u003c\/strong\u003e is designed to maintain consistent ignition under real Indian riding conditions—stop-go traffic, heat, dusty commutes, and long touring days. This directly supports smoother throttle response, easier cold starts, and more stable combustion over the service interval.\u003c\/p\u003e\n\u003cp data-end=\"1257\" data-start=\"978\"\u003eThis listing is ideal for riders doing a scheduled service, troubleshooting misfire\/jerks, or restoring performance after a long storage period. \u003cstrong data-end=\"1164\" data-start=\"1123\"\u003eSupersedes older part number 572328\/A\u003c\/strong\u003e as referenced in dealer microfiche pricing listings.\u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"1283\" data-start=\"1259\"\u003eKey Features \u003c\/h2\u003e\n\u003cul data-end=\"1953\" data-start=\"1284\"\u003e\n\u003cli data-end=\"1389\" data-start=\"1284\"\u003e\n\u003cp data-end=\"1389\" data-start=\"1286\"\u003e\u003cstrong data-end=\"1315\" data-start=\"1286\"\u003eGenuine Royal Enfield OEM\u003c\/strong\u003e spark plug (not aftermarket copy) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1503\" data-start=\"1390\"\u003e\n\u003cp data-end=\"1503\" data-start=\"1392\"\u003ePlug type\/spec: \u003cstrong data-end=\"1417\" data-start=\"1408\"\u003eUR6DC\u003c\/strong\u003e (M10 spark plug format referenced by sellers) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1589\" data-start=\"1504\"\u003e\n\u003cp data-end=\"1589\" data-start=\"1506\"\u003eHelps address common symptoms: \u003cstrong data-end=\"1587\" data-start=\"1537\"\u003ehard starting, misfire, poor idle, weak pickup\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1675\" data-start=\"1590\"\u003e\n\u003cp data-end=\"1675\" data-start=\"1592\"\u003eRecommended for routine service replacement to reduce ignition-related breakdowns\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1755\" data-start=\"1676\"\u003e\n\u003cp data-end=\"1755\" data-start=\"1678\"\u003eCorrect OEM spec improves combustion stability vs. random “universal” plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1836\" data-start=\"1756\"\u003e\n\u003cp data-end=\"1836\" data-start=\"1758\"\u003eSold as \u003cstrong data-end=\"1796\" data-start=\"1766\"\u003e1 unit (single spark plug)\u003c\/strong\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1953\" data-start=\"1837\"\u003e\n\u003cp data-end=\"1953\" data-start=\"1839\"\u003e\u003cstrong data-end=\"1861\" data-start=\"1839\"\u003eDirect replacement\u003c\/strong\u003e for bikes listed in compatibility (no modification) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1996\" data-start=\"1955\"\u003eCompatibility Table\u003c\/h2\u003e\n\u003cp data-end=\"2156\" data-start=\"1997\"\u003eFitment below is included only where model applicability is explicitly listed by multiple sellers for this part number. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable style=\"width: 100%; height: 156.75px;\" class=\"w-fit min-w-(--thread-content-width)\" data-end=\"2687\" data-start=\"2158\"\u003e\n\u003cthead data-end=\"2205\" data-start=\"2158\"\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2205\" data-start=\"2158\"\u003e\n\u003cth style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2166\" data-start=\"2158\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2180\" data-start=\"2166\"\u003eEngine Type\u003c\/th\u003e\n\u003cth style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2191\" data-start=\"2180\"\u003eBS Stage\u003c\/th\u003e\n\u003cth style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2205\" data-start=\"2191\"\u003eYear Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"2687\" data-start=\"2226\"\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2293\" data-start=\"2226\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2248\" data-start=\"2226\"\u003eBullet 350 UCE (KS)\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2258\" data-start=\"2248\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2288\" data-start=\"2258\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2293\" data-start=\"2288\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2361\" data-start=\"2294\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2316\" data-start=\"2294\"\u003eBullet 350 UCE (ES)\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2326\" data-start=\"2316\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2356\" data-start=\"2326\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2361\" data-start=\"2356\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2424\" data-start=\"2362\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2379\" data-start=\"2362\"\u003eBullet 500 UCE\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2389\" data-start=\"2379\"\u003eUCE 500\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2419\" data-start=\"2389\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2424\" data-start=\"2419\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2484\" data-start=\"2425\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2439\" data-start=\"2425\"\u003eClassic 350\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2449\" data-start=\"2439\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2479\" data-start=\"2449\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2484\" data-start=\"2479\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2554\" data-start=\"2485\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2503\" data-start=\"2485\"\u003eClassic 500 EFI\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2519\" data-start=\"2503\"\u003eUCE 500 (EFI)\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2549\" data-start=\"2519\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2554\" data-start=\"2549\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2623\" data-start=\"2555\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2578\" data-start=\"2555\"\u003eElectra 350 UCE (ES)\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2588\" data-start=\"2578\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2618\" data-start=\"2588\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2623\" data-start=\"2618\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-end=\"2687\" data-start=\"2624\"\u003e\n\u003ctd style=\"width: 25.3543%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2642\" data-start=\"2624\"\u003eThunderbird 500\u003c\/td\u003e\n\u003ctd style=\"width: 16.8248%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2652\" data-start=\"2642\"\u003eUCE 500\u003c\/td\u003e\n\u003ctd style=\"width: 37.7511%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2682\" data-start=\"2652\"\u003e❓ Verify by plug code UR6DC\u003c\/td\u003e\n\u003ctd style=\"width: 15.0698%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2687\" data-start=\"2682\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-end=\"2915\" data-start=\"2689\"\u003e\u003cstrong data-end=\"2741\" data-start=\"2689\"\u003eImportant verification rule (to reduce returns):\u003c\/strong\u003e If your existing plug marking is \u003cstrong data-end=\"2788\" data-start=\"2775\"\u003eNOT UR6DC\u003c\/strong\u003e, do not order this—send your VIN or current plug photo and match via microfiche first. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"2930\" data-start=\"2917\"\u003eVariants\u003c\/h2\u003e\n\u003cul data-end=\"3043\" data-start=\"2931\"\u003e\n\u003cli data-end=\"3043\" data-start=\"2931\"\u003e\n\u003cp data-end=\"3043\" data-start=\"2933\"\u003e\u003cstrong data-end=\"2948\" data-start=\"2933\"\u003eNo variants\u003c\/strong\u003e (single part, 1 unit): \u003cstrong data-end=\"3003\" data-start=\"2972\"\u003eSpark Plug UR6DC – 572328\/B\u003c\/strong\u003e\u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"3078\" data-start=\"3045\"\u003eFAQs \u003c\/h2\u003e\n\u003col data-end=\"4146\" data-start=\"3079\"\u003e\n\u003cli data-end=\"3265\" data-start=\"3079\"\u003e\n\u003cp data-end=\"3265\" data-start=\"3082\"\u003e\u003cstrong data-end=\"3147\" data-start=\"3082\"\u003eIs this an original Royal Enfield spark plug or “compatible”?\u003c\/strong\u003e\u003cbr data-end=\"3150\" data-start=\"3147\"\u003eThis listing is for \u003cstrong data-end=\"3216\" data-start=\"3170\"\u003egenuine Royal Enfield part number 572328\/B\u003c\/strong\u003e (UR6DC).\u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3572\" data-start=\"3267\"\u003e\n\u003cp data-end=\"3572\" data-start=\"3270\"\u003e\u003cstrong data-end=\"3342\" data-start=\"3270\"\u003eWill it fit Classic 350 Reborn \/ J-Series \/ Meteor 350 \/ Hunter 350?\u003c\/strong\u003e\u003cbr data-end=\"3345\" data-start=\"3342\"\u003eNo for J series spark plug click here. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3774\" data-start=\"3574\"\u003e\n\u003cp data-end=\"3774\" data-start=\"3577\"\u003e\u003cstrong data-end=\"3634\" data-start=\"3577\"\u003eWhat is the difference between 572328\/A and 572328\/B?\u003c\/strong\u003e\u003cbr data-end=\"3637\" data-start=\"3634\"\u003eMicrofiche price listings show \u003cstrong data-end=\"3731\" data-start=\"3668\"\u003e572328\/A as an older reference with replacement to 572328\/B\u003c\/strong\u003e. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3957\" data-start=\"3776\"\u003e\n\u003cp data-end=\"3957\" data-start=\"3779\"\u003e\u003cstrong data-end=\"3815\" data-start=\"3779\"\u003eDo I need to set spark plug gap?\u003c\/strong\u003e\u003cbr data-end=\"3818\" data-start=\"3815\"\u003eFollow your bike’s service manual specification. If you are replacing like-for-like \u003cstrong data-end=\"3911\" data-start=\"3902\"\u003eUR6DC\u003c\/strong\u003e, keep the OEM-recommended gap—do not guess.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4146\" data-start=\"3959\"\u003e\n\u003cp data-end=\"4146\" data-start=\"3962\"\u003e\u003cstrong data-end=\"4003\" data-start=\"3962\"\u003eWhen should I replace the spark plug?\u003c\/strong\u003e\u003cbr data-end=\"4006\" data-start=\"4003\"\u003eReplace during routine service intervals, or immediately if you have misfire, hard start, or erratic idle and the plug shows wear\/fouling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50910942036263,"sku":null,"price":150.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/Royal_Enfield_572328_B_spark_plug_UR6DC_OEM_for_Classic_350_UCE.jpg?v=1767962178","url":"https:\/\/underthehood.co.in\/products\/genuine-royal-enfield-spark-plug-ur6dc-572328b","provider":"UNDER THE HOOD","version":"1.0","type":"link"}