{"product_id":"royal-enfield-570604-circlip-oil-level-window-classic-bullet-electra-thunderbird-continental-gt-535","title":"Royal Enfield Circlip Oil Level Window for Bullet 350 UCE, Bullet 500 UCE, Electra 350 UCE, Classic 350, Classic 500, Thunderbird 350\/500 \u0026 Continental GT 535 – 570604","description":"\u003ch2\u003eRoyal Enfield Circlip Oil Level Window for Bullet 350 UCE, Bullet 500 UCE, Electra 350 UCE, Classic 350, Classic 500, Thunderbird 350\/500 \u0026amp; Continental GT 535 – 570604\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e570604\u003c\/strong\u003e is a genuine Royal Enfield \u003cstrong\u003eCirclip - Oil Level Window\u003c\/strong\u003e. Public OEM-style Royal Enfield parts sources identify this exact part number as \u003cstrong\u003eCIRCLIP - OIL LEVEL WINDOW\u003c\/strong\u003e. This is the retaining circlip used for the oil level window assembly on UCE-era Royal Enfield engine cover applications. It is \u003cstrong\u003enot\u003c\/strong\u003e an oil filter cap.\u003c\/p\u003e\n\u003cp\u003eThis is the correct OEM replacement when the original oil level window circlip is bent, damaged, missing, deformed during service, or being replaced while working on the engine cover \/ sight glass area. Buyers also search for this as \u003cstrong\u003eoil level window circlip\u003c\/strong\u003e, \u003cstrong\u003esight glass circlip Royal Enfield\u003c\/strong\u003e, \u003cstrong\u003eengine oil window circlip\u003c\/strong\u003e, \u003cstrong\u003eClassic 350 oil window clip\u003c\/strong\u003e, and \u003cstrong\u003eBullet UCE oil sight glass circlip\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you buy:\u003c\/strong\u003e the strongest public fitment evidence supports multiple \u003cstrong\u003eUCE-era 350cc and 500cc\u003c\/strong\u003e models including Bullet, Electra, Classic, Thunderbird, and Continental GT 535. This listing is intentionally positioned around those older UCE models and not newer J-series 350 motorcycles.\u003c\/p\u003e\n\u003ch3\u003eWhy Buyers Need It\u003c\/h3\u003e\n\u003cp\u003eThis small part becomes important when the oil level window is being repaired or replaced. If the circlip is damaged or missing, the sight-glass retention at the engine cover can be compromised. Using the correct OEM circlip is safer than reusing a distorted old clip or trying a mismatched local substitute.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield OEM circlip for oil level window\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e570604\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOfficial description: \u003cstrong\u003eCirclip - Oil Level Window\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUsed in the engine cover oil sight glass \/ oil level window area\u003c\/li\u003e\n\u003cli\u003eStrong public fitment support across UCE-era 350cc and 500cc models\u003c\/li\u003e\n\u003cli\u003eIdeal replacement for bent, damaged, or missing original circlip\u003c\/li\u003e\n\u003cli\u003eBest ordered by exact part number and engine-family match\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVerified Compatibility\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eStatus\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet 350 UCE (KS\/ES)\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include Bullet 350 UCE KS and ES.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectra 350 UCE\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include Electra 350 UCE ES and other Electra coverage.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 350\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include Classic 350.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 500 EFI\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include Classic 500 EFI.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet 500 UCE\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include Bullet 500 UCE, and partsbook context supports 500 UCE use.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 350 \/ 500\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly include TBTS \/ Thunderbird 350 and 500 family.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinental GT 535\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003e570604 as Circlip Oil Level Window on Continental GT 535 RH cover page.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Royal Enfield models\u003c\/td\u003e\n\u003ctd\u003eDo not assume\u003c\/td\u003e\n\u003ctd\u003eThis listing stays conservative around the strongest UCE-era fitment evidence.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Genuine Royal Enfield Circlip - Oil Level Window\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuyer-Focused Fitment Note\u003c\/h3\u003e\n\u003cp\u003ePlease order only after confirming your motorcycle is from the \u003cstrong\u003eUCE-era 350 \/ 500 platform\u003c\/strong\u003e and uses this exact oil level window circlip arrangement. Do not treat it as universal across newer Royal Enfield engines.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is 570604?\u003c\/strong\u003e\u003cbr\u003eIt is the genuine Royal Enfield \u003cstrong\u003eCirclip - Oil Level Window\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Is this an oil filter cap?\u003c\/strong\u003e\u003cbr\u003eNo. It is the retaining circlip for the oil level window \/ sight glass, not the oil filter cap.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Which bikes can I safely buy this for?\u003c\/strong\u003e\u003cbr\u003eStrong public fitment support covers Bullet 350 UCE, Electra 350 UCE, Classic 350, Classic 500, Bullet 500 UCE, Thunderbird 350\/500, and Continental GT 535.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Is it OEM?\u003c\/strong\u003e\u003cbr\u003eYes, it is a genuine Royal Enfield OEM part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. What problem does it solve?\u003c\/strong\u003e\u003cbr\u003eIt replaces a damaged or missing retaining circlip for the oil level window assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Is this for newer J-series 350 bikes?\u003c\/strong\u003e\u003cbr\u003eNo. This listing is not positioned for J-series 350 models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. What should I check before ordering?\u003c\/strong\u003e\u003cbr\u003eCheck your bike model, engine family, oil level window setup, and exact part number \u003cstrong\u003e570604\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51367383630119,"sku":"570604","price":7.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/570604_Circlip_Oil_Level_Window_9080bb3b-f8f2-4ba3-ba63-b82afe62e370.png?v=1778147049","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-570604-circlip-oil-level-window-classic-bullet-electra-thunderbird-continental-gt-535","provider":"UNDER THE HOOD","version":"1.0","type":"link"}