{"product_id":"royal-enfield-e20-carburettor-kit-uce-350-bs4-silver-sticker-klt00005-a","title":"Royal Enfield Classic 350, Bullet 350, Electra \u0026 Thunderbird 350 E20 Carburettor Kit – UCE BS4 Silver Sticker – KLT00005\/A","description":"\u003ch2\u003eGenuine Royal Enfield E20 Carburettor Upgrade Kit – BS4 UCE 350\u003c\/h2\u003e\n\u003cp\u003eOwn an older carburetted Royal Enfield Classic 350, Bullet 350, Electra 350 or Thunderbird 350? \u003cstrong\u003eKLT00005\/A\u003c\/strong\u003e is the genuine Royal Enfield E20 carburettor retrofit kit configuration identified for \u003cstrong\u003eUCE 350 BS4\u003c\/strong\u003e motorcycles, supplied with the \u003cstrong\u003esilver fuel-tank label\u003c\/strong\u003e. It is intended for compatible pre-BS6 carburettor fuel systems being updated for use with petrol containing up to 20% ethanol (E20).\u003c\/p\u003e\u003cp\u003eThis listing is for the \u003cstrong\u003etwo-reference OEM kit combination\u003c\/strong\u003e, not a complete replacement carburettor assembly. Select it only after confirming the motorcycle has the appropriate UCE 350 BS4 carburettor and the silver-label kit specification.\u003c\/p\u003e\n\u003ch2\u003ePart identification\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eRoyal Enfield – Genuine OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit number \/ MPN\u003c\/th\u003e\n\u003ctd\u003eKLT00005\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM description\u003c\/th\u003e\n\u003ctd\u003eE20 CARB KIT-UCE350 BS4 SILVER STICKER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eUCE 350 BS4 carburettor motorcycles; confirm by VIN \/ parts catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSticker variant\u003c\/th\u003e\n\u003ctd\u003eSilver fuel-tank label, RAK01706\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetail unit\u003c\/th\u003e\n\u003ctd\u003e1 × genuine KLT00005\/A kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eExactly what is included\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOEM part number\u003c\/th\u003e\n\u003cth\u003eOEM component description\u003c\/th\u003e\n\u003cth\u003eQuantity in supplied breakdown\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKLT00002\/A\u003c\/td\u003e\n\u003ctd\u003eE20 carburettor kit – UCE 350 BS4\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAK01706\/A\u003c\/td\u003e\n\u003ctd\u003eFuel tank label – silver\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The composition of the sealed \u003cstrong\u003eKLT00002\/A\u003c\/strong\u003e sub-kit is not independently itemised here. Do not assume the package contains a new complete carburettor, specified jets, hoses, gaskets or particular quantities of internal pieces unless confirmed from the genuine sealed pack. The two quantities shown above are from the supplied OEM kit breakdown.\u003c\/p\u003e\n\u003ch2\u003eWhy consider an E20 retrofit?\u003c\/h2\u003e\n\u003cp\u003eE20 petrol contains up to 20% ethanol. On older fuel systems not originally configured for this blend, material compatibility of seals, hoses and other carburettor-associated components deserves attention. Royal Enfield has made E20 retrofit solutions available for eligible older BS3 and BS4 carburetted UCE motorcycles. A retrofit is intended to address fuel-system compatibility, not to serve as a universal cure for poor starting, low mileage, fuel leakage or rough idling; those symptoms also require proper diagnosis.\u003c\/p\u003e\n\u003ch2\u003eModel compatibility – choose by generation, not just name\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMotorcycle\u003c\/th\u003e\n\u003cth\u003eApplication guidance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield Classic 350 (older UCE)\u003c\/td\u003e\n\u003ctd\u003eEligible UCE 350 BS4 carburettor variants only; confirm KLT00005\/A on VIN\/EPC before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield Bullet 350 (older UCE)\u003c\/td\u003e\n\u003ctd\u003eEligible UCE 350 BS4 carburettor variants only; confirm KLT00005\/A on VIN\/EPC before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield Electra 350 (older UCE)\u003c\/td\u003e\n\u003ctd\u003eEligible UCE 350 BS4 carburettor variants only; confirm KLT00005\/A on VIN\/EPC before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield Thunderbird 350 (older UCE)\u003c\/td\u003e\n\u003ctd\u003eEligible UCE 350 BS4 carburettor variants only; confirm KLT00005\/A on VIN\/EPC before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThese are the relevant older carburetted UCE model families, \u003cstrong\u003enot blanket fitment guarantees for all years or variants\u003c\/strong\u003e. BS certification, carburettor type and OEM applicability must be checked for the specific motorcycle.\u003c\/p\u003e\n\u003ch2\u003eDo not order for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUCE 350 \u003cstrong\u003eBS3\u003c\/strong\u003e models requiring the distinct BS3 E20 kit.\u003c\/li\u003e\n\u003cli\u003eBS6 \/ fuel-injected J-Series models such as the Classic 350 Reborn, Meteor 350, Hunter 350 or new Bullet 350.\u003c\/li\u003e\n\u003cli\u003e500cc UCE motorcycles, EFI variants, or other engine capacities without specific OEM confirmation.\u003c\/li\u003e\n\u003cli\u003eMotorcycles requiring the \u003cstrong\u003eblack sticker\u003c\/strong\u003e configuration instead of this silver-label kit.\u003c\/li\u003e\n\u003cli\u003eAnyone needing a \u003cstrong\u003ecomplete carburettor assembly\u003c\/strong\u003e, rather than an E20 upgrade kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSilver sticker vs black sticker: avoid the wrong kit\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKLT00005\/A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUCE 350 BS4, silver sticker\u003c\/td\u003e\n\u003ctd\u003eThis product: KLT00002\/A + RAK01706\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKLT00004\/A\u003c\/td\u003e\n\u003ctd\u003eUCE 350 BS4, black sticker\u003c\/td\u003e\n\u003ctd\u003eDifferent fuel-tank label variant; verify exact OEM pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKLT00007\/A\u003c\/td\u003e\n\u003ctd\u003eUCE 350 BS3, silver sticker\u003c\/td\u003e\n\u003ctd\u003eDifferent BS3 carburettor sub-kit KLT00003\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKLT00006\/A\u003c\/td\u003e\n\u003ctd\u003eUCE 350 BS3, black sticker\u003c\/td\u003e\n\u003ctd\u003eDifferent BS3 carburettor sub-kit and label variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eDo not substitute the BS3 carburettor kit for the BS4 version based on appearance alone. The label colour identifies the selected kit variant; it does not, by itself, establish the bike’s carburettor configuration.\u003c\/p\u003e\n\u003ch2\u003eBefore ordering – four checks\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eConfirm the motorcycle is an \u003cstrong\u003eolder UCE 350 BS4 carburetted\u003c\/strong\u003e variant, not J-Series, BS3 or EFI.\u003c\/li\u003e\n\u003cli\u003eMatch the VIN \/ chassis number and original carburettor to the correct Royal Enfield EPC or authorised dealer reference.\u003c\/li\u003e\n\u003cli\u003eConfirm the \u003cstrong\u003esilver-sticker\u003c\/strong\u003e version KLT00005\/A is required.\u003c\/li\u003e\n\u003cli\u003eReview the exact kit number and check the existing fuel system’s condition with a competent mechanic.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eInstallation and practical guidance\u003c\/h2\u003e\n\u003cp\u003eHave the retrofit installed by a technician familiar with Royal Enfield UCE carburettors. The technician should inspect the fuel supply path and original carburettor, replace only the appropriate components according to genuine kit\/service instructions, check for leakage and confirm normal idling and throttle response after service. Do not assume a new complete carburettor is supplied. No unverified jetting, torque, tuning or calibration specifications are provided here.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003e1. Which Royal Enfield models is this kit for?\u003c\/h3\u003e\u003cp\u003eApplicable UCE 350 BS4 carburetted variants of the older Classic, Bullet, Electra and Thunderbird families, after VIN\/EPC confirmation.\u003c\/p\u003e\u003ch3\u003e2. Does it fit Classic 350 Reborn?\u003c\/h3\u003e\u003cp\u003eNo; Classic 350 Reborn uses the later J-Series fuel-injected platform.\u003c\/p\u003e\u003ch3\u003e3. Does it fit a BS3 Classic 350?\u003c\/h3\u003e\u003cp\u003eNo. The BS3 version uses a different carburettor kit reference.\u003c\/p\u003e\u003ch3\u003e4. What is the difference between KLT00005\/A and KLT00004\/A?\u003c\/h3\u003e\u003cp\u003eBoth are BS4 E20 kit variants, but this listing is specifically for the silver tank-label configuration.\u003c\/p\u003e\u003ch3\u003e5. Is KLT00002\/A included?\u003c\/h3\u003e\u003cp\u003eYes: the supplied breakdown specifies one KLT00002\/A sub-kit.\u003c\/p\u003e\u003ch3\u003e6. Is the silver tank sticker included?\u003c\/h3\u003e\u003cp\u003eYes: one RAK01706\/A label appears in the supplied breakdown.\u003c\/p\u003e\u003ch3\u003e7. Does this contain a full carburettor?\u003c\/h3\u003e\u003cp\u003eA complete replacement carburettor is not specified in the breakdown and should not be assumed included.\u003c\/p\u003e\u003ch3\u003e8. Are jets, seals and fuel pipes included?\u003c\/h3\u003e\u003cp\u003eThe internal bill of materials of KLT00002\/A must be checked against the sealed genuine packet; individual internals are not promised here.\u003c\/p\u003e\u003ch3\u003e9. Will it solve a rough-idling or starting issue?\u003c\/h3\u003e\u003cp\u003eNot necessarily. Such symptoms may arise from several causes and need diagnosis.\u003c\/p\u003e\u003ch3\u003e10. Does this kit make any Royal Enfield compatible with E20?\u003c\/h3\u003e\u003cp\u003eNo. Application is limited to matching older UCE 350 BS4 carburetted motorcycles.\u003c\/p\u003e\u003ch3\u003e11. Can I fit the kit myself?\u003c\/h3\u003e\u003cp\u003eProfessional installation is recommended, followed by fuel-leak and operational checks.\u003c\/p\u003e\u003ch3\u003e12. How do I avoid ordering the wrong variant?\u003c\/h3\u003e\u003cp\u003eVerify BS generation, carburettor specification, VIN\/EPC and silver-vs-black label requirement before purchase.\u003c\/p\u003e\n\u003ch2\u003eOrdering, claims and return information\u003c\/h2\u003e\n\u003cp\u003ePlease verify model, generation, VIN, exact part number and included component references before ordering. Correctly supplied spare parts are generally not eligible for return due to incorrect selection, fitment assumption, incorrect diagnosis or change of mind, subject to applicable consumer law and store policy. For a damaged, missing or incorrect item, preserve the packaging and provide a complete unboxing video when raising a claim within 24 hours of delivery. Please review Under The Hood’s published return and cancellation policies.\u003c\/p\u003e\n\u003ch2\u003eCommon buyer search names\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield E20 kit BS4; Royal Enfield BS4 carburetor conversion kit; Classic 350 E20 upgrade kit; old Bullet 350 E20 petrol kit; Electra 350 carb E20 kit; Thunderbird 350 E20 fuel conversion; UCE 350 BS4 carb repair kit; genuine Royal Enfield KLT00005\/A; silver sticker E20 kit; KLT00002\/A carburettor retrofit.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":52488443330855,"sku":"KLT00005\/A","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/royal-enfield-e20-carburettor-kit-uce-350-bs4-silver-sticker-klt00005-a","provider":"UNDER THE HOOD","version":"1.0","type":"link"}