{"product_id":"royal-enfield-insulator-kit-888183-classic-500-efi-bullet-500-thunderbird-500","title":"Royal Enfield Insulator Kit 888183 for Classic 500 EFI, Bullet 500 \u0026 Thunderbird 500","description":"\u003cp\u003eRoyal Enfield \u003cstrong\u003e888183 Insulator Kit\u003c\/strong\u003e is a genuine Royal Enfield fuel-injection related insulator kit used on compatible \u003cstrong\u003e500cc UCE EFI\u003c\/strong\u003e motorcycles where this exact part number is specified. It is commonly searched as a \u003cstrong\u003eClassic 500 EFI insulator kit\u003c\/strong\u003e, \u003cstrong\u003eBullet 500 EFI insulator kit\u003c\/strong\u003e, \u003cstrong\u003eThunderbird 500 insulator kit\u003c\/strong\u003e, \u003cstrong\u003efuel injection insulator kit\u003c\/strong\u003e, \u003cstrong\u003einjector insulator kit\u003c\/strong\u003e or \u003cstrong\u003eRoyal Enfield 888183\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis small kit belongs to the fuel injection \/ sensor area and should be replaced when the original insulator is missing, hardened, damaged, cracked, leaking, incorrectly fitted, or disturbed during injector \/ fuel-injection service. A poor seal or wrong local substitute in the EFI intake area can contribute to air leak symptoms, uneven idle, fuel smell, poor running quality, or repeated workshop rework after injector service.\u003c\/p\u003e\n\u003cp\u003eBike-Parts Royal Enfield identifies \u003cstrong\u003e888183\u003c\/strong\u003e as \u003cstrong\u003eInsulator Kit\u003c\/strong\u003e and confirms it as a genuine Royal Enfield part. Bike-Parts also shows 888183 as item A2 in fuel injection and sensors diagrams for Bullet 500 Euro 4 and Bullet Trials 500 Euro 4. The Spares Company lists part number 888183 for \u003cstrong\u003eNTB 500\u003c\/strong\u003e and \u003cstrong\u003eClassic 500 EFI\u003c\/strong\u003e, while additional seller references mention Bullet 500 EFI applications. Use it only where the parts diagram specifies 888183.\u003c\/p\u003e\n\u003cp\u003eThis listing is intentionally written around \u003cstrong\u003e500cc UCE EFI models\u003c\/strong\u003e. It is not a universal rubber\/insulator kit for every Royal Enfield and should not be ordered for J-Series 350, Himalayan 450, 650 models or carburettor models unless the exact part catalogue confirms 888183.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield spare part\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e888183\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory description: \u003cstrong\u003eInsulator Kit\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFuel injection \/ sensor area component\u003c\/li\u003e\n\u003cli\u003eReferenced in Royal Enfield fuel injection and sensors diagrams\u003c\/li\u003e\n\u003cli\u003eUseful for Classic 500 EFI, Bullet 500 EFI and Thunderbird 500 \/ NTB 500 applications where specified\u003c\/li\u003e\n\u003cli\u003eHelps restore correct OE-style sealing and fitment in the EFI assembly area\u003c\/li\u003e\n\u003cli\u003eBetter fitment confidence than locally matched rubber\/insulator pieces\u003c\/li\u003e\n\u003cli\u003eImportant when servicing injector \/ fuel-injection components\u003c\/li\u003e\n\u003cli\u003eBest ordered by exact part number and model-specific parts diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuyer Search Names \/ Internal Search Keywords\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield 888183, 888183 insulator kit, Classic 500 EFI insulator kit, Classic 500 injector insulator, Bullet 500 EFI insulator kit, Thunderbird 500 insulator kit, NTB 500 insulator kit, Royal Enfield fuel injection insulator, Royal Enfield EFI insulator kit, UCE 500 injector insulator.\u003c\/p\u003e\n\u003ch2\u003eVerified Compatibility\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel \/ Platform\u003c\/th\u003e\n\u003cth\u003eGeneration\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eFitment Status\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eClassic 500 EFI\u003c\/td\u003e\n\u003ctd\u003e500cc UCE EFI\u003c\/td\u003e\n\u003ctd\u003eFuel injection \/ sensor area insulator kit\u003c\/td\u003e\n\u003ctd\u003eCompatible where \u003cstrong\u003e888183\u003c\/strong\u003e is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eThunderbird 500 \/ NTB 500\u003c\/td\u003e\n\u003ctd\u003e500cc UCE EFI\u003c\/td\u003e\n\u003ctd\u003eFuel injection \/ sensor area insulator kit\u003c\/td\u003e\n\u003ctd\u003eCompatible where \u003cstrong\u003e888183\u003c\/strong\u003e is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eBullet 500 EFI \/ Bullet 500 Euro 4\u003c\/td\u003e\n\u003ctd\u003e500cc UCE EFI\u003c\/td\u003e\n\u003ctd\u003eFuel injection and sensors diagram item A2\u003c\/td\u003e\n\u003ctd\u003eCompatible where \u003cstrong\u003e888183\u003c\/strong\u003e is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eBullet Trials 500 Euro 4\u003c\/td\u003e\n\u003ctd\u003e500cc UCE EFI\u003c\/td\u003e\n\u003ctd\u003eFuel injection and sensors diagram item A2\u003c\/td\u003e\n\u003ctd\u003eCompatible where \u003cstrong\u003e888183\u003c\/strong\u003e is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eImportant 500 EFI Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThis part is for \u003cstrong\u003e500cc UCE EFI applications\u003c\/strong\u003e where \u003cstrong\u003e888183\u003c\/strong\u003e is specified. Do not confuse EFI 500 models with carburettor variants, J-Series 350 models, Himalayan\/Scram models, or 650 Twin models. Always match the exact part number in the fuel injection and sensors diagram before ordering.\u003c\/p\u003e\n\u003ch2\u003eImportant Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003einsulator kit only\u003c\/strong\u003e. It is \u003cstrong\u003enot\u003c\/strong\u003e the injector kit assembly, not the throttle body, not the fuel pump, not the fuel filter, not the engine oil temperature sensor, not an O-ring temperature sensor and not a complete fuel-injection repair kit.\u003c\/p\u003e\n\u003cp\u003eDo not order only by symptom. Rough idle, starting issues, hesitation or fuel smell can also come from injector, fuel pump pressure, throttle body, O-rings, sensors, spark plug, ignition coil, wiring, battery, blocked filter or wrong diagnosis. Match \u003cstrong\u003e888183\u003c\/strong\u003e before purchase.\u003c\/p\u003e\n\u003cp\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e order for Classic 350 Reborn, Bullet 350 J-Series, Meteor 350, Hunter 350, Himalayan 411, Scram 411, Himalayan 450, Guerrilla 450, Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650, Bear 650, Classic 650 or any carburettor model unless the exact parts catalogue confirms \u003cstrong\u003e888183\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e888183 vs Similar EFI Parts\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number \/ Type\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eSame as This Listing?\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e888183\u003c\/td\u003e\n\u003ctd\u003eInsulator Kit\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e571086\u003c\/td\u003e\n\u003ctd\u003eInjector Kit Assembly\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e572607\/A\u003c\/td\u003e\n\u003ctd\u003eO-Ring Temperature Sensor\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine oil temperature sensor\u003c\/td\u003e\n\u003ctd\u003eTemperature sensor in fuel injection diagram\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThrottle body assembly\u003c\/td\u003e\n\u003ctd\u003eEFI throttle\/intake component\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhen Should This Kit Be Replaced?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInsulator is cracked, hardened, missing or damaged\u003c\/li\u003e\n\u003cli\u003eFuel-injection area was opened for injector\/throttle body service\u003c\/li\u003e\n\u003cli\u003eOld insulator is not sealing correctly\u003c\/li\u003e\n\u003cli\u003eLocal substitute or wrong rubber piece was fitted earlier\u003c\/li\u003e\n\u003cli\u003eAir leak around EFI\/intake area is confirmed\u003c\/li\u003e\n\u003cli\u003eMotorcycle is being restored with correct Royal Enfield EFI hardware\u003c\/li\u003e\n\u003cli\u003eWorkshop needs the correct genuine kit instead of temporary sealant or local jugaad\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cp\u003eSmall EFI sealing parts can affect running quality. A wrong or damaged insulator can create sealing issues, intake-area leakage, poor repair finish and repeat complaints. Genuine Royal Enfield \u003cstrong\u003e888183\u003c\/strong\u003e helps maintain the intended fuel-injection assembly fitment where the 500cc UCE EFI parts catalogue specifies this kit.\u003c\/p\u003e\n\u003ch2\u003eRecommended Related Parts to Check\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInjector kit assembly\u003c\/li\u003e\n\u003cli\u003eInjector O-rings and sealing area\u003c\/li\u003e\n\u003cli\u003eThrottle body mounting and air leak points\u003c\/li\u003e\n\u003cli\u003eEngine oil temperature sensor and O-ring where disturbed\u003c\/li\u003e\n\u003cli\u003eFuel hose and connector condition\u003c\/li\u003e\n\u003cli\u003eFuel pump pressure if running issue is present\u003c\/li\u003e\n\u003cli\u003eDiagnostic scan \/ EFI fault codes before replacing unrelated parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1 x Royal Enfield Insulator Kit – 888183\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInjector kit, sensors, throttle body, fuel pump, fuel hoses, O-rings, bolts and other EFI components are included only if specifically supplied or shown separately.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation should be done by a trained mechanic familiar with Royal Enfield EFI systems.\u003c\/li\u003e\n\u003cli\u003eConfirm the exact part number before opening the fuel-injection area.\u003c\/li\u003e\n\u003cli\u003eClean the mating area before installing the new insulator kit.\u003c\/li\u003e\n\u003cli\u003eDo not reuse cracked, hardened or distorted sealing parts.\u003c\/li\u003e\n\u003cli\u003eDo not use sealant as a substitute for the correct insulator kit.\u003c\/li\u003e\n\u003cli\u003eAfter installation, check for air leaks, fuel leaks, stable idle and smooth throttle response.\u003c\/li\u003e\n\u003cli\u003eIf running problems remain, inspect injector, fuel pump pressure, throttle body, sensors and wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReturn-Prevention Note\u003c\/h2\u003e\n\u003cp\u003eOrder only if your motorcycle requires \u003cstrong\u003e888183 Insulator Kit\u003c\/strong\u003e. This is a part-number-specific fuel-injection-area kit for compatible Royal Enfield 500cc EFI applications and should not be confused with injector kit, throttle body, sensor O-rings or generic rubber insulators.\u003c\/p\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eWhat is Royal Enfield 888183?\u003c\/h3\u003e\n\u003cp\u003e888183 is a genuine Royal Enfield \u003cstrong\u003eInsulator Kit\u003c\/strong\u003e used in fuel-injection\/sensor area applications where specified.\u003c\/p\u003e\n\u003ch3\u003eDoes 888183 fit Classic 500 EFI?\u003c\/h3\u003e\n\u003cp\u003eYes, The Spares Company lists 888183 for Classic 500 EFI. Use it where the exact parts catalogue confirms this part number.\u003c\/p\u003e\n\u003ch3\u003eDoes 888183 fit Thunderbird 500?\u003c\/h3\u003e\n\u003cp\u003eThe Spares Company lists 888183 for NTB 500 \/ Thunderbird 500 references. Confirm the exact parts diagram before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes 888183 fit Bullet 500 EFI?\u003c\/h3\u003e\n\u003cp\u003eBike-Parts Royal Enfield shows 888183 in fuel injection and sensors diagrams for Bullet 500 Euro 4, and seller references mention Bullet 500 EFI. Use it by exact part-number match.\u003c\/p\u003e\n\u003ch3\u003eIs this the injector kit?\u003c\/h3\u003e\n\u003cp\u003eNo. The injector kit assembly is a different part. This listing is for the insulator kit only.\u003c\/p\u003e\n\u003ch3\u003eWill this fix rough idle?\u003c\/h3\u003e\n\u003cp\u003eOnly if the insulator\/sealing area is the confirmed issue. Rough idle can also come from injector, throttle body, fuel pump, sensors, spark plug, wiring or air leaks elsewhere.\u003c\/p\u003e\n\u003ch3\u003eCan it fit Classic 350 Reborn or Meteor 350?\u003c\/h3\u003e\n\u003cp\u003eNo. Do not order for J-Series 350 models unless the exact parts catalogue confirms 888183.\u003c\/p\u003e\n\u003ch3\u003eIs this a genuine Royal Enfield part?\u003c\/h3\u003e\n\u003cp\u003eYes 888183 is a genuine Royal Enfield spare part.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51454356554023,"sku":"888183","price":88.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/6E3D67E9-EE4B-471F-859C-D60E02618B07.jpg?v=1780756458","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-insulator-kit-888183-classic-500-efi-bullet-500-thunderbird-500","provider":"UNDER THE HOOD","version":"1.0","type":"link"}