{"product_id":"royal-enfield-572327b-spark-plug-wqr8dc","title":"Royal Enfield Spark Plug WQR8DC (OEM) – Bullet 350 UCE \/ Bullet 500 UCE \/ Classic 350 \/ Electra 350 UCE \/ Thunderbird 350 \/ Continental GT 535 – Genuine 572327\/B","description":"\u003cp data-start=\"291\" data-end=\"772\"\u003eThe \u003cstrong data-start=\"295\" data-end=\"341\"\u003eRoyal Enfield 572327\/B Spark Plug (WQR8DC)\u003c\/strong\u003e is a \u003cstrong data-start=\"347\" data-end=\"378\"\u003egenuine OEM-spec spark plug\u003c\/strong\u003e used across multiple Royal Enfield platforms where correct heat range and reach are critical for smooth starts, stable idle, and clean combustion. Ordering by the \u003cstrong data-start=\"542\" data-end=\"572\"\u003eexact part number 572327\/B\u003c\/strong\u003e is the safest way to avoid common issues seen with mismatched aftermarket plugs—hard starting, misfire under load, reduced mileage, and premature plug fouling. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"774\" data-end=\"1034\"\u003eThis plug is commonly referenced as \u003cstrong data-start=\"810\" data-end=\"826\"\u003eBosch WQR8DC\u003c\/strong\u003e (long reach, single electrode, resistor type) in established Royal Enfield parts ecosystems—especially for the \u003cstrong data-start=\"938\" data-end=\"960\"\u003eContinental GT 535\u003c\/strong\u003e and Euro-market EFI applications.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1036\" data-end=\"1335\"\u003eIt is also a \u003cstrong data-start=\"1049\" data-end=\"1080\"\u003ecurrent\/updated part number\u003c\/strong\u003e in fiche supersessions: \u003cstrong data-start=\"1105\" data-end=\"1128\"\u003e572327\/A → 572327\/B\u003c\/strong\u003e, and older “spark plug” numbers like \u003cstrong data-start=\"1166\" data-end=\"1176\"\u003e500904\u003c\/strong\u003e are shown with \u003cstrong data-start=\"1192\" data-end=\"1223\"\u003e572327\/B as the replacement\u003c\/strong\u003e in parts lists—useful when customers search using older workshop bills. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1337\" data-end=\"1340\"\u003e\n\u003ch2 data-start=\"1342\" data-end=\"1366\"\u003eKey Features \u003c\/h2\u003e\n\u003cul data-start=\"1367\" data-end=\"2121\"\u003e\n\u003cli data-start=\"1367\" data-end=\"1459\"\u003e\n\u003cp data-start=\"1369\" data-end=\"1459\"\u003e\u003cstrong data-start=\"1369\" data-end=\"1394\"\u003eGenuine Royal Enfield\u003c\/strong\u003e part number \u003cstrong data-start=\"1407\" data-end=\"1419\"\u003e572327\/B\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1460\" data-end=\"1547\"\u003e\n\u003cp data-start=\"1462\" data-end=\"1547\"\u003eOfficial description: \u003cstrong data-start=\"1484\" data-end=\"1507\"\u003e“SPARK PLUG WQR8DC”\u003c\/strong\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1548\" data-end=\"1691\"\u003e\n\u003cp data-start=\"1550\" data-end=\"1691\"\u003eCommon OE reference: \u003cstrong data-start=\"1571\" data-end=\"1587\"\u003eBosch WQR8DC\u003c\/strong\u003e (resistor, single electrode; long reach noted in RE ecosystems)\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1692\" data-end=\"1785\"\u003e\n\u003cp data-start=\"1694\" data-end=\"1785\"\u003e\u003cstrong data-start=\"1694\" data-end=\"1721\"\u003eSupersession supported:\u003c\/strong\u003e \u003cstrong data-start=\"1722\" data-end=\"1745\"\u003e572327\/A → 572327\/B\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1786\" data-end=\"1925\"\u003e\n\u003cp data-start=\"1788\" data-end=\"1925\"\u003e\u003cstrong data-start=\"1788\" data-end=\"1818\"\u003eCross-reference supported:\u003c\/strong\u003e older listing \u003cstrong data-start=\"1833\" data-end=\"1843\"\u003e500904\u003c\/strong\u003e shows replacement mapping to \u003cstrong data-start=\"1873\" data-end=\"1885\"\u003e572327\/B\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1926\" data-end=\"2036\"\u003e\n\u003cp data-start=\"1928\" data-end=\"2036\"\u003eImproves \u003cstrong data-start=\"1937\" data-end=\"1986\"\u003ecold start, idle stability, throttle response\u003c\/strong\u003e when correct spec is maintained (vs wrong plug)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2037\" data-end=\"2121\"\u003e\n\u003cp data-start=\"2039\" data-end=\"2121\"\u003e\u003cstrong data-start=\"2039\" data-end=\"2062\"\u003eQuantity per box: 1\u003c\/strong\u003e in dealer listings \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2123\" data-end=\"2126\"\u003e\n\u003ch2 data-start=\"2128\" data-end=\"2201\"\u003eCompatibility Table \u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2203\" data-end=\"2872\" class=\"w-fit min-w-(--thread-content-width)\" style=\"width: 100%; height: 156.75px;\"\u003e\n\u003cthead data-start=\"2203\" data-end=\"2245\"\u003e\n\u003ctr data-start=\"2203\" data-end=\"2245\" style=\"height: 19.5938px;\"\u003e\n\u003cth data-start=\"2203\" data-end=\"2211\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2211\" data-end=\"2225\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eEngine Type\u003c\/th\u003e\n\u003cth data-start=\"2225\" data-end=\"2236\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003eBS Stage\u003c\/th\u003e\n\u003cth data-start=\"2236\" data-end=\"2245\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2266\" data-end=\"2872\"\u003e\n\u003ctr data-start=\"2266\" data-end=\"2349\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2266\" data-end=\"2292\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2268\" data-end=\"2291\"\u003eBullet 350 UCE (KS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2292\" data-end=\"2302\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd data-start=\"2302\" data-end=\"2306\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2306\" data-end=\"2349\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2350\" data-end=\"2435\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2350\" data-end=\"2376\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2352\" data-end=\"2375\"\u003eBullet 350 UCE (ES)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2376\" data-end=\"2386\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd data-start=\"2386\" data-end=\"2390\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2390\" data-end=\"2435\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2436\" data-end=\"2516\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2436\" data-end=\"2457\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2438\" data-end=\"2456\"\u003eBullet 500 UCE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2457\" data-end=\"2467\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 500\u003c\/td\u003e\n\u003ctd data-start=\"2467\" data-end=\"2471\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2471\" data-end=\"2516\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2517\" data-end=\"2603\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2517\" data-end=\"2544\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2519\" data-end=\"2543\"\u003eElectra 350 UCE (ES)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2544\" data-end=\"2554\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd data-start=\"2554\" data-end=\"2558\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2558\" data-end=\"2603\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2604\" data-end=\"2700\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2604\" data-end=\"2622\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2606\" data-end=\"2621\"\u003eClassic 350\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2622\" data-end=\"2651\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 350 (Classic platform)\u003c\/td\u003e\n\u003ctd data-start=\"2651\" data-end=\"2655\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2655\" data-end=\"2700\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2701\" data-end=\"2782\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2701\" data-end=\"2723\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2703\" data-end=\"2722\"\u003eThunderbird 350\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2723\" data-end=\"2733\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003eUCE 350\u003c\/td\u003e\n\u003ctd data-start=\"2733\" data-end=\"2737\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2737\" data-end=\"2782\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2783\" data-end=\"2872\" style=\"height: 19.5938px;\"\u003e\n\u003ctd data-start=\"2783\" data-end=\"2808\" data-col-size=\"sm\" style=\"width: 32.4275%; height: 19.5938px;\"\u003e\u003cstrong data-start=\"2785\" data-end=\"2807\"\u003eContinental GT 535\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2808\" data-end=\"2823\" data-col-size=\"sm\" style=\"width: 39.7211%; height: 19.5938px;\"\u003e535 (GT 535)\u003c\/td\u003e\n\u003ctd data-start=\"2823\" data-end=\"2827\" data-col-size=\"sm\" style=\"width: 14.255%; height: 19.5938px;\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2827\" data-end=\"2872\" data-col-size=\"sm\" style=\"width: 8.59654%; height: 19.5938px;\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\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\u003e\u003cspan style=\"color: rgb(250, 15, 15);\"\u003e\u003cstrong data-start=\"3053\" data-end=\"3077\"\u003ePLEASE CHECK PART NUMBER BEFORE PURCHASE \u003c\/strong\u003e\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"3051\" data-end=\"3424\"\u003e\n\u003cli data-start=\"3189\" data-end=\"3273\"\u003e\n\u003cp data-start=\"3191\" data-end=\"3273\"\u003e\u003cstrong data-start=\"3191\" data-end=\"3231\"\u003eThunderbird KS (CDI-2004 \/ TCI-2005)\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3274\" data-end=\"3343\"\u003e\n\u003cp data-start=\"3276\" data-end=\"3343\"\u003e\u003cstrong data-start=\"3276\" data-end=\"3301\"\u003eThunderbird ES (2005)\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3344\" data-end=\"3424\"\u003e\n\u003cp data-start=\"3346\" data-end=\"3424\"\u003e\u003cstrong data-start=\"3346\" data-end=\"3382\"\u003eBullet 500 (2000) \/ Standard 500\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3426\" data-end=\"3429\"\u003e\n\u003ch2 data-start=\"3431\" data-end=\"3444\"\u003eVariants\u003c\/h2\u003e\n\u003cul data-start=\"3445\" data-end=\"3790\"\u003e\n\u003cli data-start=\"3445\" data-end=\"3533\"\u003e\n\u003cp data-start=\"3447\" data-end=\"3533\"\u003e\u003cstrong data-start=\"3447\" data-end=\"3462\"\u003eSingle SKU:\u003c\/strong\u003e 572327\/B (Spark Plug WQR8DC) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3534\" data-end=\"3790\"\u003e\n\u003cp data-start=\"3536\" data-end=\"3611\"\u003e\u003cstrong data-start=\"3536\" data-end=\"3609\"\u003eOlder\/related numbers (do not purchase if you already have 572327\/B):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3614\" data-end=\"3790\"\u003e\n\u003cli data-start=\"3614\" data-end=\"3693\"\u003e\n\u003cp data-start=\"3616\" data-end=\"3693\"\u003e\u003cstrong data-start=\"3616\" data-end=\"3651\"\u003e572327\/A → replaced by 572327\/B\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3696\" data-end=\"3790\"\u003e\n\u003cp data-start=\"3698\" data-end=\"3790\"\u003e\u003cstrong data-start=\"3698\" data-end=\"3748\"\u003e500904 → replacement mapping shown to 572327\/B\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3792\" data-end=\"3795\"\u003e\n\u003ch2 data-start=\"3797\" data-end=\"3810\"\u003eFAQs \u003c\/h2\u003e\n\u003cp data-start=\"3811\" data-end=\"4023\"\u003e\u003cstrong data-start=\"3811\" data-end=\"3859\"\u003e1) Is 572327\/B a genuine Royal Enfield part?\u003c\/strong\u003e\u003cbr data-start=\"3859\" data-end=\"3862\"\u003eYes. It is listed in Royal Enfield microfiche-style catalogs as \u003cstrong data-start=\"3926\" data-end=\"3949\"\u003e“SPARK PLUG WQR8DC”\u003c\/strong\u003e under part number \u003cstrong data-start=\"3968\" data-end=\"3980\"\u003e572327\/B\u003c\/strong\u003e.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4025\" data-end=\"4320\"\u003e\u003cstrong data-start=\"4025\" data-end=\"4090\"\u003e2) My old bill shows 572327\/A or 500904. What should I order?\u003c\/strong\u003e\u003cbr data-start=\"4090\" data-end=\"4093\"\u003eOrder \u003cstrong data-start=\"4099\" data-end=\"4111\"\u003e572327\/B\u003c\/strong\u003e. Catalog supersession shows \u003cstrong data-start=\"4140\" data-end=\"4173\"\u003e572327\/A replaced by 572327\/B\u003c\/strong\u003e, and older “spark plug” numbers like \u003cstrong data-start=\"4211\" data-end=\"4221\"\u003e500904\u003c\/strong\u003e show replacement mapping to \u003cstrong data-start=\"4250\" data-end=\"4262\"\u003e572327\/B\u003c\/strong\u003e in parts lists. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4322\" data-end=\"4670\"\u003e\u003cstrong data-start=\"4322\" data-end=\"4359\"\u003e3) Is this the Bosch WQR8DC plug?\u003c\/strong\u003e\u003cbr data-start=\"4359\" data-end=\"4362\"\u003eIt is sold\/identified as \u003cstrong data-start=\"4387\" data-end=\"4397\"\u003eWQR8DC\u003c\/strong\u003e, and established Royal Enfield parts references list it specifically as \u003cstrong data-start=\"4470\" data-end=\"4486\"\u003eBosch WQR8DC\u003c\/strong\u003e (resistor, single electrode, long reach). Packaging\/branding may vary by supply batch, but the key is the correct \u003cstrong data-start=\"4601\" data-end=\"4627\"\u003eWQR8DC \/ 572327\/B spec\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4672\" data-end=\"4944\"\u003e\u003cstrong data-start=\"4672\" data-end=\"4752\"\u003e4) Will it fit J-Series 350 (Classic Reborn \/ Meteor \/ Hunter) or 650 Twins?\u003c\/strong\u003e\u003cbr data-start=\"4752\" data-end=\"4755\"\u003eNot confirmed for those platforms under \u003cstrong data-start=\"4795\" data-end=\"4807\"\u003e572327\/B\u003c\/strong\u003e in the dealer sources used here, so they are \u003cstrong data-start=\"4853\" data-end=\"4867\"\u003enot listed\u003c\/strong\u003e to avoid wrong orders and returns. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4946\" data-end=\"5207\"\u003e\u003cstrong data-start=\"4946\" data-end=\"5008\"\u003e5) What symptoms indicate I should replace the spark plug?\u003c\/strong\u003e\u003cbr data-start=\"5008\" data-end=\"5011\"\u003eHard starting, rough idle, misfire under acceleration, reduced mileage, and visible electrode wear\/fouling are common signs. Replacing with the correct OEM-spec plug restores baseline performance.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50910945837351,"sku":null,"price":159.5,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/royal-enfield-572327b-spark-plug-wqr8dc-oem-01.jpg?v=1767962507","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-572327b-spark-plug-wqr8dc","provider":"UNDER THE HOOD","version":"1.0","type":"link"}