Royal Enfield 144353/B – Left Hand Switch Module (LH Handlebar Switch) for Bullet 350, Bullet 500, Electra 4S KS & Machismo A350 – Genuine OEM Old Model

Royal Enfield part 144353/B is the genuine L.H. SWITCH MODULE – the complete left-hand handlebar switch assembly used on classic CI/AVL Bullets and early Electra/Machismo models.L.H. SWITCH MODULE (144353-B)('144353)” with fitment: Bullet 350 (1955), Deluxe (1986), Machismo (1989), Campus (1997), Electra 4S-KS (2005), Bullet 500 (2000), Machismo A350 (1999). 

SWITCH LEFT HAND HORN DECOMPRESSOR #144353”, confirming that this module includes the typical old-model RE controls on the left bar: horn, indicator, headlight functions and decompressor lever interface where applicable. The latest Royal Enfield price lists also show 144353/B – L.H. SWITCH MODULE, confirming it as the current revision of the classic LH switch.

This is not a cheap universal switch – it is built to OEM spec with the correct cable lengths, connectors and switch logic for the old nacelle / handlebar wiring. Ideal when your original LH switch is cracked, corroded, intermittently working, or physically damaged after a fall, and for full restorations where you want factory-correct controls on Bullet 350/500, Electra 4S KS, and Machismo A350.

🔴 Not for UCE (Classic 350/500 EFI, Thunderbird UCE, Electra UCE), not for J-Series, Himalayan or 650 Twins.

Key Features

• Genuine Royal Enfield L.H. SWITCH MODULE – official description for part 144353/B in RE price lists and microfiche.

• Verified fitment for Bullet 350 (1955), Deluxe (1986), Machismo (1989), Campus (1997), Electra 4S-KS (2005), Bullet 500 (2000), Machismo A350 (1999) via The Spares Company and eBay export listing.

• Designed for old model Enfield left side: typically carries horn, indicators, headlight/dipper, and decompressor interaction where provided.

• Correct loom connector and wire colours for classic nacelle harness – no cutting/splicing required on listed models.

• Maintains original switch feel and layout, preserving the vintage riding experience and cockpit look.

• Perfect for restorations, export builds and daily-use classics where reliability of lights, horn and indicators is critical.

• Supplied as a complete LH switch module – housing, rocker/slide switches and pigtail harness as per OE.

• Built to handle 12V electrical systems of classic CI/AVL Bullets when wired correctly and paired with good earths.

Compatibility Table

*Years from The Spares Company labels; treat as era indicators, not exact launch.

PLEASE CHECK PART NUMBER BEFORE ORDER 

❌ Not Claimed / Not Guaranteed

To avoid returns, we do NOT guarantee plug-and-play fitment on:

• Bullet 350/500 UCE, Classic 350/500 EFI, Electra UCE, Thunderbird 350/500 UCE

• All J-Series (new Classic 350, new Bullet 350, Hunter, Meteor)

• Himalayan 411/450, Scram/Guerrilla 450

• 650 Twins (Interceptor / Continental GT / Super Meteor / Shotgun / Bear)

For these platforms, clamp diameter, wiring plugs and switch logic are different; treat 144353/B only as a custom project with rewiring.

Variants

From Royal Enfield side:

• 144353 – L.H. SWITCH MODULE (base number – often marked as superseded)

• 144353/B – Current revision in 2024 RE price lists – L.H. SWITCH MODULE.

On underthehood.co.in you can keep 1 live SKU:

• Variant: 144353/B – Left Hand Switch Module (Old Model Bullet / Electra 4S KS / Machismo A350)

Note in description:

“You may see 144353 or 144353/B referenced in catalogues; current genuine stock ships as 144353/B, the latest OE revision.”

FAQs

Q1. What exactly is Royal Enfield part 144353/B?
It’s the complete left-hand handlebar switch module for old-model Royal Enfield Bullets – the OEM unit that houses horn, indicator and lighting controls (and decompressor interface on some models). RE microfiche and price lists record it as L.H. SWITCH MODULE.

Q2. Which bikes is 144353/B confirmed to fit?
Bullet 350 (1955), Deluxe (1986), Machismo (1989), Campus (1997), Electra 4S-KS (2005), Bullet 500 (2000), Machismo A350 (1999). eBay’s “Switch Left Hand Horn Decompressor #144353” matches the same old-model Bullet family.

Q3. Is 144353/B compatible with classic Electra 5S, Thunderbird AVL or UCE/J-Series models?
There’s no clean multi-source proof for Electra 5S, Thunderbird AVL or any UCE/J-Series use. Their bars and looms differ, so we don’t advertise 144353/B as direct fit. It may be adaptable only with wiring changes – strictly a custom job.

Q4. Does the switch come with wiring harness and buttons fitted?
Yes. 144353/B is a complete LH module – plastic housing, installed switches, and attached wiring pigtail as per OE. You simply route the wires through the headlamp nacelle and plug into the existing connectors on supported models.

Q5. Do I need a mechanic to install it?
If you’re comfortable opening the headlamp nacelle and matching connectors colour-to-colour, you can install it yourself. For old looms that have been spliced or non-standard, we recommend a good local electrician to avoid wrong connections and blown fuses.