Royal Enfield 593191/D – OEM Ignition Switch Key Slot Adaptor for Classic & Bullet 350/500 UCE Models

The Royal Enfield 593191/D Adaptor is a genuine OEM component designed to house and secure the ignition switch in the headlamp casing. Commonly referred to as the ignition key slot adaptor or keyhole mount, this part ensures the ignition barrel sits firmly in place, aligned properly, and safe from vibration or movement.

It is used across Royal Enfield UCE (Unit Construction Engine) models, including Classic 350, Classic 500, Bullet 350, and Bullet 500 (BS3 & BS4). With time, the adaptor can crack, wear out, or loosen, making the ignition switch unstable and difficult to use. Installing the original 593191/D restores correct fitment, smooth key operation, and factory reliability.

This small yet vital part also plays a role in security: a proper ignition switch housing reduces tampering risks and extends the life of the ignition lockset. Being an OEM part, it matches factory specifications for durability, fit, and finish.

Key Features:

• Genuine Royal Enfield OEM 593191/D Ignition Key Slot Adaptor

• Fits directly into headlamp casing on UCE models

• Securely holds ignition switch in position

• Compatible with Classic 350, Classic 500, Bullet 350, Bullet 500 (UCE, BS3 & BS4)

• Prevents loose key barrel, vibration, or misalignment

• High-quality OEM material for durability and long service life

• Easy installation — plug-fit replacement

Compatibility Table:

Variants:

• Part Number: 593191/D

• Supplied as single adaptor (ignition switch/lockset sold separately)

FAQs:

1. What does this part do?
   → It is the adaptor that secures the ignition switch/key slot inside the headlamp casing.

2. Does it fit J-Series models (Reborn Classic, Hunter, Meteor)?
   → ❌ No. This adaptor is only for UCE models (Classic & Bullet 350/500 up to BS4).

3. Is it OEM?
   → ✅ Yes, it’s a genuine Royal Enfield spare part, part no. 593191/D.

4. Why should I replace it?
   → A cracked or loose adaptor causes the ignition key to wobble, can damage wiring, and reduces security.

5. Does it include the key switch?
   → No — this is the housing adaptor only. Order ignition switch/lockset separately if needed.