{"product_id":"royal-enfield-574184-c-nut-tappet-adjusting-j-series-350","title":"Royal Enfield 574184\/C – Tappet Adjusting Nut OEM for 350 J-Series (Classic, Meteor, Hunter \u0026 Bullet)","description":"\u003cp data-end=\"1900\" data-start=\"1520\"\u003e\u003cspan style=\"color: #f00f0f;\"\u003e\u003cstrong\u003eNOW SOLD AS A SET OF 2 PCS\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1900\" data-start=\"1520\"\u003eSecure your valve clearance with the genuine Royal Enfield \u003cstrong data-end=\"1655\" data-start=\"1622\"\u003e574184\/C Tappet Adjusting Nut\u003c\/strong\u003e. This OEM nut locks the tappet adjuster in place, ensuring stable lash, accurate valve timing, and silence in your top end. Ideal when your adjuster is loose, threads are worn, or when replacing worn oval-shaped nuts that let clearance drift.\u003c\/p\u003e\n\u003cp data-end=\"2451\" data-start=\"1902\"\u003e574184\/C is used on many 350 J-Series models — \u003cstrong data-end=\"1998\" data-start=\"1949\"\u003eClassic 350 UK\/Euro V, Bullet 350, Meteor 350\u003c\/strong\u003e, and others. Ships as genuine factory spec, with correct thread \u0026amp; seating finish. Many suppliers require a minimum quantity of 2, reflecting that both intake \u0026amp; exhaust valves often need this nut during overhaul. Replace worn components with OEM parts like this to retain engine smoothness, eliminate noise, and avoid damage to tappet adjuster. Before ordering, compare your existing nut (thread size, seat finish, locking type) to ensure compatibility.\u003c\/p\u003e\n\u003chr data-end=\"2456\" data-start=\"2453\"\u003e\n\u003cp data-end=\"2477\" data-start=\"2458\"\u003e\u003cstrong data-end=\"2475\" data-start=\"2458\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2905\" data-start=\"2478\"\u003e\n\u003cli data-end=\"2581\" data-start=\"2478\"\u003e\n\u003cp data-end=\"2581\" data-start=\"2480\"\u003eGenuine Royal Enfield \u003cstrong data-end=\"2536\" data-start=\"2502\"\u003e574184\/C Nut, Tappet Adjusting\u003c\/strong\u003e part \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=\"2661\" data-start=\"2582\"\u003e\n\u003cp data-end=\"2661\" data-start=\"2584\"\u003eCorrect thread \u0026amp; OEM spec fit for J-Series 350 valvetrain adjuster position\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2741\" data-start=\"2662\"\u003e\n\u003cp data-end=\"2741\" data-start=\"2664\"\u003eHelps lock in tappet adjusters securely, prevents lash drift \u0026amp; engine noise\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2905\" data-start=\"2849\"\u003e\n\u003cp data-end=\"2905\" data-start=\"2851\"\u003eDurable finish \u0026amp; material to resist vibration \u0026amp; wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2910\" data-start=\"2907\"\u003e\n\u003cp data-end=\"2936\" data-start=\"2912\"\u003e\u003cstrong data-end=\"2936\" data-start=\"2912\"\u003eCompatibility Table: All Indian +\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable height=\"219\" style=\"width: 97.1429%; height: 265px;\" class=\"w-fit min-w-(--thread-content-width)\" data-end=\"3639\" data-start=\"2938\"\u003e\n\u003cthead data-end=\"2991\" data-start=\"2938\"\u003e\n\u003ctr data-end=\"2991\" data-start=\"2938\" style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 15.4023%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2946\" data-start=\"2938\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 17.6345%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2962\" data-start=\"2946\"\u003eEngine \/ Spec\u003c\/th\u003e\n\u003cth style=\"width: 19.4203%; height: 19.5938px;\" data-col-size=\"sm\" data-end=\"2982\" data-start=\"2962\"\u003eEmission \/ Region\u003c\/th\u003e\n\u003cth style=\"width: 45.9837%; height: 19.5938px;\" data-col-size=\"lg\" data-end=\"2991\" data-start=\"2982\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"3639\" data-start=\"3010\"\u003e\n\u003ctr data-end=\"3165\" data-start=\"3010\" style=\"height: 54.6406px;\"\u003e\n\u003ctd style=\"width: 15.4023%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3038\" data-start=\"3010\"\u003eClassic 350 (UK \/ Euro V)\u003c\/td\u003e\n\u003ctd style=\"width: 17.6345%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3057\" data-start=\"3038\"\u003e349 cc, J-Series\u003c\/td\u003e\n\u003ctd style=\"width: 19.4203%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3079\" data-start=\"3057\"\u003eEuro V \/ BS6 Export\u003c\/td\u003e\n\u003ctd style=\"width: 45.9837%; height: 54.6406px;\" data-col-size=\"lg\" data-end=\"3165\" data-start=\"3079\"\u003e-\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"3295\" data-start=\"3166\" style=\"height: 28.0156px;\"\u003e\n\u003ctd style=\"width: 15.4023%; height: 28.0156px;\" data-col-size=\"sm\" data-end=\"3179\" data-start=\"3166\"\u003eBullet 350\u003c\/td\u003e\n\u003ctd style=\"width: 17.6345%; height: 28.0156px;\" data-col-size=\"sm\" data-end=\"3198\" data-start=\"3179\"\u003e349 cc, J-Series\u003c\/td\u003e\n\u003ctd style=\"width: 19.4203%; height: 28.0156px;\" data-col-size=\"sm\" data-end=\"3220\" data-start=\"3198\"\u003eEuro V \/ BS6 Export\u003c\/td\u003e\n\u003ctd style=\"width: 45.9837%; height: 28.0156px;\" data-col-size=\"lg\" data-end=\"3295\" data-start=\"3220\"\u003e-\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"3452\" data-start=\"3296\" style=\"height: 54.6406px;\"\u003e\n\u003ctd style=\"width: 15.4023%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3323\" data-start=\"3296\"\u003eMeteor 350 (UK \/ Euro V)\u003c\/td\u003e\n\u003ctd style=\"width: 17.6345%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3342\" data-start=\"3323\"\u003e349 cc, J-Series\u003c\/td\u003e\n\u003ctd style=\"width: 19.4203%; height: 54.6406px;\" data-col-size=\"sm\" data-end=\"3364\" data-start=\"3342\"\u003eEuro V \/ BS6 Export\u003c\/td\u003e\n\u003ctd style=\"width: 45.9837%; height: 54.6406px;\" data-col-size=\"lg\" data-end=\"3452\" data-start=\"3364\"\u003e-\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"3639\" data-start=\"3453\" style=\"height: 28.0625px;\"\u003e\n\u003ctd style=\"width: 15.4023%; height: 28.0625px;\" data-col-size=\"sm\" data-end=\"3466\" data-start=\"3453\"\u003eHunter 350\u003c\/td\u003e\n\u003ctd style=\"width: 17.6345%; height: 28.0625px;\" data-col-size=\"sm\" data-end=\"3485\" data-start=\"3466\"\u003e349 cc, J-Series\u003c\/td\u003e\n\u003ctd style=\"width: 19.4203%; height: 28.0625px;\" data-col-size=\"sm\" data-end=\"3507\" data-start=\"3485\"\u003eEuro V \/ BS6 Export\u003c\/td\u003e\n\u003ctd style=\"width: 45.9837%; height: 28.0625px;\" data-col-size=\"lg\" data-end=\"3639\" data-start=\"3507\"\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\u003chr data-end=\"3644\" data-start=\"3641\"\u003e\n\u003cp data-end=\"3661\" data-start=\"3646\"\u003e\u003cstrong data-end=\"3659\" data-start=\"3646\"\u003eVariants:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"3963\" data-start=\"3662\"\u003e\n\u003cli data-end=\"3766\" data-start=\"3662\"\u003e\n\u003cp data-end=\"3766\" data-start=\"3664\"\u003ePart number \u003cstrong data-end=\"3688\" data-start=\"3676\"\u003e574184\/C\u003c\/strong\u003e (suffix “\/C”) — ensure this matches your existing part’s suffix if stamped.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3866\" data-start=\"3767\"\u003e\n\u003cp data-end=\"3866\" data-start=\"3769\"\u003eSupplied as 2 nut; for full replacement of both intake \u0026amp; exhaust, need \u003cstrong data-end=\"3863\" data-start=\"3851\"\u003e2 pieces\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3963\" data-start=\"3867\"\u003e\n\u003cp data-end=\"3963\" data-start=\"3869\"\u003eFinish and locking type per OEM spec; no alternate versions documented prominently in sources.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3968\" data-start=\"3965\"\u003e\n\u003cp data-end=\"3981\" data-start=\"3970\"\u003e\u003cstrong data-end=\"3979\" data-start=\"3970\"\u003eFAQs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col data-end=\"5035\" data-start=\"3983\"\u003e\n\u003cli data-end=\"4183\" data-start=\"3983\"\u003e\n\u003cp data-end=\"4183\" data-start=\"3986\"\u003e\u003cstrong data-end=\"4043\" data-start=\"3986\"\u003eHow many nuts do I need for full valvetrain overhaul?\u003c\/strong\u003e\u003cbr data-end=\"4046\" data-start=\"4043\"\u003e→ Two (one for intake, one for exhaust) is typical. Order qty 2.\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4405\" data-start=\"4185\"\u003e\n\u003cp data-end=\"4405\" data-start=\"4188\"\u003e\u003cstrong data-end=\"4230\" data-start=\"4188\"\u003eDoes this fit all J-Series 350 models?\u003c\/strong\u003e\u003cbr data-end=\"4233\" data-start=\"4230\"\u003e→ Yes, for most J-Series 350s (Classic UK\/Euro V, Meteor, Bullet).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4597\" data-start=\"4407\"\u003e\n\u003cp data-end=\"4597\" data-start=\"4410\"\u003e\u003cstrong data-end=\"4456\" data-start=\"4410\"\u003eWhat are signs I need to replace this nut?\u003c\/strong\u003e\u003cbr data-end=\"4459\" data-start=\"4456\"\u003e→ Loose adjuster, regular lash loss, ticking noise at idle, visible wear or rounding of the nut, inability to lock adjuster properly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4803\" data-start=\"4599\"\u003e\n\u003cp data-end=\"4803\" data-start=\"4602\"\u003e\u003cstrong data-end=\"4643\" data-start=\"4602\"\u003eOEM or aftermarket — what difference?\u003c\/strong\u003e\u003cbr data-end=\"4646\" data-start=\"4643\"\u003e→ OEM ensures correct thread pitch, seat design, and durability. Aftermarket may be weaker material or poor locking which can lead to adjuster slippage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5035\" data-start=\"4805\"\u003e\n\u003cp data-end=\"5035\" data-start=\"4808\"\u003e\u003cstrong data-end=\"4853\" data-start=\"4808\"\u003eWill replacing this stop all valve noise?\u003c\/strong\u003e\u003cbr data-end=\"4856\" data-start=\"4853\"\u003e→ It helps, particularly if nut looseness or wear is contributing. But check adjuster screw, probes, rocker arms, \u0026amp; lash settings too. OEM nuts are only one part of the system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50439326269735,"sku":null,"price":29.5,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/J-Series_350_tappet_adjusting_nut_574184C.jpg?v=1758359287","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-574184-c-nut-tappet-adjusting-j-series-350","provider":"UNDER THE HOOD","version":"1.0","type":"link"}