{"product_id":"royal-enfield-573906-a-washer-seal-rocker-cover-uce-models","title":"Royal Enfield Washer Seal Rocker Cover for UCE Models – 573906\/A","description":"\u003ch2\u003eRoyal Enfield Washer Seal Rocker Cover for UCE Models – 573906\/A\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e573906\/A\u003c\/strong\u003e is a genuine Royal Enfield \u003cstrong\u003ewasher seal for the rocker cover\u003c\/strong\u003e. Public Royal Enfield fiche-style sources identify this part exactly as \u003cstrong\u003eWASHER SEAL ROCKER COVER\u003c\/strong\u003e, and dealer references show it as a shared engine sealing hardware part used across multiple UCE-era Royal Enfield motorcycles rather than a one-model-only spare.\u003c\/p\u003e\n\u003cp\u003eThis is the kind of small but critical part customers usually struggle to find, especially during rocker cover work, top-end servicing, oil leak diagnosis, or engine reassembly. Buyers also search for this as \u003cstrong\u003erocker cover sealing washer\u003c\/strong\u003e, \u003cstrong\u003evalve cover washer seal\u003c\/strong\u003e, \u003cstrong\u003eRoyal Enfield rocker cover washer\u003c\/strong\u003e, \u003cstrong\u003etop cover sealing washer\u003c\/strong\u003e, and \u003cstrong\u003eUCE rocker cover oil seal washer\u003c\/strong\u003e. Because it is a shared engine sealing part, the best listing position is \u003cstrong\u003epart number + function + known UCE model coverage\u003c\/strong\u003e, not vague generic “engine washer” wording.\u003c\/p\u003e\n\u003cp\u003eSeller references tie this part to a wide UCE family including \u003cstrong\u003eTBTS\u003c\/strong\u003e, \u003cstrong\u003eBullet 350 UCE (KS\/ES)\u003c\/strong\u003e, \u003cstrong\u003eElectra 350 UCE (ES)\u003c\/strong\u003e, \u003cstrong\u003eClassic 350\u003c\/strong\u003e, \u003cstrong\u003eClassic 500 EFI\u003c\/strong\u003e, \u003cstrong\u003eThunderbird 350\u003c\/strong\u003e, \u003cstrong\u003eThunderbird 500\u003c\/strong\u003e, and \u003cstrong\u003eContinental GT\u003c\/strong\u003e. Bike-parts fiche context also shows the same part number in the \u003cstrong\u003eClassic 500 cylinder head\u003c\/strong\u003e diagram. \u003cstrong\u003eBefore you buy:\u003c\/strong\u003e match the old washer\/seal style and confirm your motorcycle is one of the supported UCE applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield OEM rocker cover washer seal\u003c\/li\u003e\n\u003cli\u003ePart number: 573906\/A\u003c\/li\u003e\n\u003cli\u003eOfficial description: Washer Seal Rocker Cover\u003c\/li\u003e\n\u003cli\u003eUsed in rocker cover \/ cylinder head sealing hardware application\u003c\/li\u003e\n\u003cli\u003eShared across multiple Royal Enfield UCE models\u003c\/li\u003e\n\u003cli\u003eImportant for top-end service, rocker cover refit, and oil leak prevention\u003c\/li\u003e\n\u003cli\u003eUseful when the old sealing washer is hardened, crushed, leaking, or missing\u003c\/li\u003e\n\u003cli\u003eBest ordered by part number and old-part visual match\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePlatform\/Engine\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\u003eTBTS\u003c\/td\u003e\n\u003ctd\u003eUCE-era Thunderbird platform\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes TBTS.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet 350 UCE (KS)\u003c\/td\u003e\n\u003ctd\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Bullet 350 UCE KS.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet 350 UCE (ES)\u003c\/td\u003e\n\u003ctd\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Bullet 350 UCE ES.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectra 350 UCE (ES)\u003c\/td\u003e\n\u003ctd\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Electra 350 UCE ES.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 350 UCE\u003c\/td\u003e\n\u003ctd\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Classic 350.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 500 EFI\u003c\/td\u003e\n\u003ctd\u003eUCE 499cc EFI\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Classic 500 EFI; fiche context also shows 573906A in Classic 500 cylinder head diagram.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 350\u003c\/td\u003e\n\u003ctd\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Thunderbird 350.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 500\u003c\/td\u003e\n\u003ctd\u003eUCE 499cc\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eDealer model list directly includes Thunderbird 500.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinental GT 535\u003c\/td\u003e\n\u003ctd\u003eUCE\/535 platform\u003c\/td\u003e\n\u003ctd\u003eConfirmed in seller references\u003c\/td\u003e\n\u003ctd\u003eDealer references include Continental GT.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eVariants\u003c\/h3\u003e\n\u003cp\u003eNo variants under this SKU. Related nearby cylinder-head sealing hardware in Royal Enfield lists includes \u003cstrong\u003e573907\/A\u003c\/strong\u003e, also described as Washer Seal Rocker Cover but listed separately with a different price point in parts indexes.\u003c\/p\u003e\n\u003ch3\u003eBefore You Buy Checklist\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm your bike is one of the supported UCE applications\u003c\/li\u003e\n\u003cli\u003eMatch the old washer\/seal style before ordering\u003c\/li\u003e\n\u003cli\u003eCheck whether you need one piece or multiple pieces for the service job\u003c\/li\u003e\n\u003cli\u003eDo not order for newer J-Series or unrelated platforms without proof\u003c\/li\u003e\n\u003cli\u003eUse part number + engine family + visual match as the safest buying method\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1) What is 573906\/A?\u003c\/strong\u003e\u003cbr\u003eIt is the genuine Royal Enfield washer seal for the rocker cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Which bikes are safely confirmed for this part?\u003c\/strong\u003e\u003cbr\u003eThe current strongest evidence supports TBTS, Bullet 350 UCE KS\/ES, Electra 350 UCE ES, Classic 350, Classic 500 EFI, Thunderbird 350, Thunderbird 500, and Continental GT in seller references.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3) Is this an important part even though it is small?\u003c\/strong\u003e\u003cbr\u003eYes. It is a sealing hardware piece used around the rocker cover area, so using the correct washer seal matters during reassembly and oil leak prevention.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4) Does it fit J-Series Classic 350 or new Bullet 350?\u003c\/strong\u003e\u003cbr\u003eNo trustworthy source support was found for those newer platforms, so they should stay excluded.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5) OEM or aftermarket?\u003c\/strong\u003e\u003cbr\u003eThis is a genuine Royal Enfield OEM part number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6) What problem does this solve?\u003c\/strong\u003e\u003cbr\u003eIt replaces an old, flattened, leaking, damaged, or missing rocker cover sealing washer during top-end service or repair.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7) What should I check before ordering?\u003c\/strong\u003e\u003cbr\u003eCheck the exact bike model, engine family, and old washer\/seal shape. Also confirm the number of pieces needed for your service job.\u003c\/p\u003e\n\u003ch3\u003eAlso Searched As\u003c\/h3\u003e\n\u003cp\u003erocker cover washer seal, valve cover washer Royal Enfield, top cover sealing washer UCE, rocker cover oil seal washer, cylinder head cover washer RE, Royal Enfield rocker cover sealing washer.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51313275306279,"sku":"573906\/A","price":41.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/573906_A_Washersealrockercover.png?v=1776771122","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-573906-a-washer-seal-rocker-cover-uce-models","provider":"UNDER THE HOOD","version":"1.0","type":"link"}