Royal Enfield Bullet/Classic 350 & 500 UCE Ignition Coil RAC00155/A

Restore reliable spark generation on a compatible Royal Enfield Bullet or Classic UCE motorcycle with genuine ignition coil assembly RAC00155/A. Supplied as an ignition coil with its high-tension cap cord arrangement—not as a bare spark-plug cap.

This is a genuine Royal Enfield electrical ignition component carrying complete manufacturer reference RAC00155/A. Its factory description is IGNITION COIL WITH CAP CORD WATER PROOF.

The assembly is intended for exact-reference older Bullet and Classic UCE applications. It is not suitable for the Classic 350 Reborn, new Bullet 350 J-Series, Hunter 350, Meteor 350, Himalayan range, 650 Twins or other modern platforms.

Critical fitment warning: UCE motorcycles can differ by capacity, emission stage, carburettor/EFI configuration, connector, mounting and wiring arrangement. Order only after matching RAC00155/A on the old component, packaging label, previous invoice or VIN-specific Royal Enfield parts catalogue.

Do not diagnose or order an ignition coil from the motorcycle name alone.

What this product is

• Genuine Royal Enfield ignition coil assembly
• Complete part number and MPN: RAC00155/A
• Base search reference: RAC00155
• Coil with high-tension cap cord as factory supplied
• Exact-reference replacement for compatible Bullet and Classic UCE applications
• High-voltage component in the motorcycle’s ignition system

What it is not

• Not a spark plug
• Not only a separate plug cap
• Not a CDI, TCI or ECU
• Not a starter relay or solenoid
• Not a complete wiring harness
• Not a stator, alternator or regulator-rectifier
• Not a universal ignition coil
• Not a racing or performance upgrade
• Not automatically suitable for every UCE motorcycle
• Not compatible with J-Series or 650 Twin ignition systems

Key features

• Factory-listed RAC00155/A reference
• Coil and cap-cord configuration under one service reference
• Generates the high voltage required at the spark plug when used with the correct ignition system
• Factory “waterproof cap cord” wording distinguishes it from bare-coil and separate-cap references
• Suitable for genuine-condition repair where RAC00155/A is specified
• Relevant to professionally diagnosed no-spark, weak-spark or intermittent ignition faults
• Exact part-number and connector verification helps prevent electrical-part ordering errors

No unverified voltage, resistance, output energy, pin count, cord length, material, mounting dimensions or production-year cut-off is claimed.

Compatibility

Fitment requiring additional verification

Do not order for

• Classic 350 Reborn/J-Series
• New Bullet 350 J-Series
• Hunter 350
• Meteor 350
• Himalayan 411 or Himalayan 450
• Scram 411
• Guerrilla 450
• Interceptor 650 or Continental GT 650
• Super Meteor 650, Shotgun 650, Bear 650 or Classic 650
• Continental GT 535 without an exact RAC00155/A catalogue callout
• Cast-iron or AVL models unless their catalogue explicitly specifies RAC00155/A

Similar-part warning

Royal Enfield lists multiple visually similar ignition coils and cap components. Similar appearance or wording does not prove interchangeability.

No verified supersession for RAC00155/A is claimed.

Symptoms requiring diagnosis

• Engine cranks but produces no spark
• Spark becomes intermittent when the engine is hot
• Misfiring under load
• Hard starting after other causes are ruled out
• Visible damage to the high-tension cord or cap
• Arcing or current leakage around the cap or cord
• Ignition cutting out during wet conditions
• Corroded, loose or heat-damaged terminals

These symptoms do not prove the coil is defective. Battery, spark plug, wiring, earth connection, pickup coil, ignition controller, kill switch, side-stand circuit, fuse and charging-system faults can produce similar symptoms.

Package contents

1 × Genuine Royal Enfield ignition coil with waterproof cap cord – RAC00155/A

A spark plug, wiring harness, ECU/CDI/TCI, relay, fuse, battery cable, mounting fasteners and diagnostic components are not included unless physically present in the sealed package and shown in the product photographs.

Before buying

• Confirm the complete RAC00155/A reference.
• Confirm UCE versus J-Series, AVL or cast-iron generation.
• Confirm the motorcycle’s 350cc or 500cc configuration.
• Check carburettor/EFI and emission-stage differences.
• Compare the connector and terminal layout.
• Compare mounting points and bracket orientation.
• Compare cap profile and high-tension cord length.
• Check whether the motorcycle’s wiring has been modified.
• Have the existing coil professionally tested.
• Use VIN-specific EPC verification if any detail differs.

Inspection and installation

Record a continuous unboxing video from the sealed parcel through complete inspection. Confirm the package label, coil body, cord, cap, connector, terminals and mounting arrangement before opening protective packaging or connecting the component.

Professional installation is recommended. Disconnect the battery before electrical work, photograph the original wiring, release connectors correctly and never cut or splice the harness to accommodate an unmatched component.

Do not test for spark by holding the plug cap or exposed terminal by hand. Do not pierce the high-tension cord for testing. The word “waterproof” is the factory description and does not permit direct high-pressure washing.

Electrical-parts return policy

Orders cannot be cancelled once placed. Exchanges are not offered.

A correctly supplied electrical component is not returnable or refundable after delivery or after it has been opened, connected, plugged in, energised, resistance-tested, test-fitted, installed, scratched, marked, modified or used.

Ordering RAC00155/A following an incorrect diagnosis or for the wrong model, connector or ignition system does not make the supplied component incorrect.

A wrong, missing or transit-damaged item must be reported within 24 hours with the continuous unboxing video, photographs, labels and complete packaging.

Frequently asked questions

1. What is RAC00155/A?

It is a genuine Royal Enfield ignition coil assembly supplied with a waterproof cap cord according to the factory description.

2. Is RAC00155 the same reference?

RAC00155 is the base search reference. The complete SKU and MPN for this listing is RAC00155/A.

3. Which motorcycles use it?

Exact-reference older Bullet 350/500 and Classic 350/500 UCE applications use this component. The old reference and connector must still match.

4. Does it fit Classic 350 UCE?

Yes, where RAC00155/A is specified. It does not fit the newer Classic 350 Reborn.

5. Does it fit Classic 500 UCE?

It applies where the old component, connector or VIN-specific catalogue confirms RAC00155/A.

6. Does it fit Bullet 350 UCE?

Yes, within the confirmed older UCE/ES family where RAC00155/A is specified.

7. Does it fit Bullet 500 UCE?

Only where the motorcycle’s existing component or parts catalogue confirms RAC00155/A.

8. Does it fit Electra 350 UCE?

Electra fitment is not safely confirmed as a broad application. Order only with exact RAC00155/A verification.

9. Does it fit Thunderbird 350 or 500?

Thunderbird fitment is not reliably confirmed. A common UCE engine does not guarantee ignition-coil interchangeability.

10. Does it fit the Classic 350 Reborn or new Bullet 350?

No. Those motorcycles use the newer J-Series platform.

11. Is the spark-plug cap included?

The factory description specifies an ignition coil with cap cord. Compare the current package photographs before ordering.

12. Is a spark plug included?

No. The spark plug is a separate service item.

13. Is this a CDI or ECU?

No. This is the ignition coil assembly, not the ignition control unit.

14. Will it fix hard starting?

Only if testing confirms that the existing coil or cap cord is defective. Battery, plug, fuel, wiring and control-system faults can cause the same symptom.

15. Will it fix misfiring in rain?

It may help when the existing cord or cap is leaking voltage, but the spark plug, connector, wiring and water entry must also be inspected.

16. Can resistance be checked with a multimeter?

Only using the correct Royal Enfield service specification and procedure. An incorrect meter range or procedure can give misleading results.

17. Is RAC00154/A interchangeable?

No interchangeability is confirmed. Similar appearance and description are insufficient.

18. Can I install it myself?

Professional installation is recommended because unsafe spark testing, wiring damage and incorrect diagnosis can cause additional problems.

19. How can I prevent ordering the wrong coil?

Match RAC00155/A, engine generation, connector, mounting arrangement, cord length and cap profile before opening the package.

20. Can I connect it temporarily to test compatibility?

No. Confirm compatibility first. Correctly supplied electrical parts become ineligible for return once opened, connected, tested or installed.