Royal Enfield E20 Carburettor Retrofit Kit with Silver Fuel Tank Sticker – UCE 350 BS3 – KLT00007/A Genuine OEM

E20 Upgrade Kit for Older Royal Enfield UCE 350 BS3 Motorcycles

Royal Enfield KLT00007/A is the genuine E20 carburettor retrofit/upgrade kit specified for the UCE 350 BS3 carburettor platform, packaged with a silver fuel-tank label. It combines the E20 carburettor kit KLT00003/A with the silver label RAK01706/A under one kit reference. This is for owners and workshops seeking an OEM fuel-system retrofit for older carburetted Royal Enfield 350 motorcycles when E20 (up to 20% ethanol blended petrol) fuel is in use.

This product is not a complete replacement carburettor assembly. The supplied parent-kit breakdown identifies a carburettor retrofit kit and a separate silver label. Detailed loose components inside KLT00003/A must be confirmed from the genuine sealed package.

Exact Part Identification

What You Receive — OEM Kit Breakdown

The following two component references are listed in the supplied Royal Enfield kit breakdown. This is a kit-level bill of materials; it does not verify the number of internal seals, jets, tubes or other pieces inside the nested carburettor kit.

Important: Do not assume that a full carburettor body, throttle cable, fuel tank, complete fuel hose set or particular gasket/jet quantity is included. Check the original sealed kit and installation documentation for the detailed internal contents.

Why an E20 Carburettor Retrofit Matters

Older carburettor-equipped motorcycles were designed around fuel-system materials and calibration of their production era. Ethanol in modern petrol can create compatibility concerns for certain older fuel-system rubber and sealing components. Genuine Royal Enfield E20 retrofit kits have been introduced for select older UCE 350 BS3/BS4 motorcycles; the BS3 and BS4 kit families are distinct. This retrofit is intended to address fuel compatibility at the carburettor component level. It is not a guarantee against every fuel-system issue or a cure for all hard-starting and idle complaints.

Compatibility — Check the BS Generation and Existing Carburettor

Model-family coverage is supported by published E20 retrofit reporting, but the exact KLT00007/A application must be checked against the motorcycle VIN and current authorised Royal Enfield parts data before fitting. Model year alone does not reliably establish BS3/BS4 classification.

Do Not Order For

• UCE 350 BS4 carburettor motorcycles: use the separately specified BS4 kit variant after VIN/EPC confirmation.
• Fuel-injected (EFI) motorcycles or BS6 motorcycles.
• Classic 350 Reborn, Meteor 350, Hunter 350 or new Bullet 350 J-Series.
• UCE 500, Himalayan 411/450, Guerrilla 450 or any 650 motorcycle unless separately documented.
• Owners needing a complete carburettor assembly rather than an E20 retrofit components kit.

Related Genuine Part Numbers — Avoid Ordering the Wrong Version

When Should You Consider This Upgrade?

This kit is relevant when preparing an eligible older UCE 350 BS3 carburetted motorcycle for E20 petrol compatibility or carrying out a documented E20 retrofit. If the motorcycle also has fuel leakage, unstable idle, hesitation or difficult starting, request a mechanical inspection first: stale fuel, air leaks, blocked jets, choke issues, ignition faults and worn parts can produce similar symptoms. Do not purchase a retrofit kit solely on the basis of one symptom.

Installation & Workshop Notes

1. Verify the motorcycle VIN, BS3 emission category and carburettor identification against the dealer EPC.
2. Inspect the genuine kit for the correct KLT00003/A package and RAK01706/A silver label.
3. Have a qualified Royal Enfield mechanic follow the proper retrofit/service procedure and assess existing hoses, intake rubber and seals separately.
4. Inspect for fuel leaks, correct cable movement and safe engine operation after installation; adjust idle/mixture only as specified for the motorcycle.
5. Apply the silver tank label as directed by the applicable retrofit instructions; do not use it as proof of a completed conversion by itself.

No torque settings, jetting specifications or detailed kit-piece counts are asserted without the corresponding current service instructions.

Before You Buy — Fitment & Order Protection

Please confirm: (1) your bike is 350 UCE and BS3, (2) it uses a carburettor rather than EFI, (3) the correct BS3 carburettor/retrofit part appears in the OEM EPC, and (4) you specifically require the silver-label KLT00007/A package. For assistance, provide the VIN and clear pictures of the existing carburettor and its markings before placing an order.

Orders cannot be cancelled once processing has started. Correctly supplied parts are generally not returnable for incorrect selection, diagnosis, mechanic recommendation, fitment mismatch or change of mind, subject to applicable law and policy. Claims of damaged, wrong or missing goods should be reported within 24 hours with a complete unboxing video under Under The Hood policy.

Frequently Asked Questions

Is KLT00007/A a genuine Royal Enfield kit?

It is identified in the supplied OEM kit breakdown as E20 CARB KIT-UCE350 BS3 SILVER STICKER. Confirm genuine packaging and part label on delivery.

Is this for BS3 or BS4?

BS3 UCE 350 carburettor models. BS4 has a separately numbered E20 kit family.

Does the kit contain a complete carburettor assembly?

Do not assume so. The breakdown contains KLT00003/A E20 carburettor retrofit kit and RAK01706/A silver label; it does not list a complete carburettor assembly.

What is special about the silver-sticker version?

KLT00007/A explicitly includes fuel tank label RAK01706/A, described as silver. This should not be confused with black-label versions.

Will it fit an old Classic 350?

Only if the particular motorcycle is UCE 350, BS3 and carburettor-equipped and the VIN/EPC matches this retrofit application.

Will it fit Bullet 350 or Electra 350?

These older UCE 350 carburettor model families are covered in E20 retrofit reporting, but check the individual motorcycle VIN and original carburettor before ordering.

Will it fit Thunderbird 350?

Possibly within the older BS3 UCE 350 carburettor range; confirm VIN, emission generation and carburettor parts reference.

Can it be used on Classic 350 Reborn, Meteor or Hunter?

No. Those J-Series fuel-injected models are not the UCE 350 BS3 carburettor platform.

Does it solve poor idling or difficult starting?

It is an E20 retrofit, not a guaranteed repair for those symptoms. Diagnose fuel, ignition, air leaks and carb condition first.

Are new fuel hoses, jets, O-rings and seals included?

Specific internal pieces and quantities within KLT00003/A have not been verified for this sealed package. Confirm against the genuine kit before claiming any item.

Does the silver tank sticker prove E20 compatibility?

No. The label is an included identifier; the appropriate mechanical retrofit must be completed and checked by a competent workshop.

What details should I send for fitment confirmation?

VIN, emission standard, clear carburettor photos and existing carburettor markings; the dealer EPC is the final reference.

Search Names & Related Buyer Terms

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