Main Wiring Harness – 1040607/B | Genuine Royal Enfield OEM – Fits Classic 500 BS4 & Bullet 500 BS4

Restore your Royal Enfield’s electrical reliability with the genuine Main Wiring Harness (Part No. 1040607/B). This OEM component is factory-engineered for Classic 500 BS4 and Bullet 500 BS4, ensuring precise compatibility and long-term dependability.

As the backbone of your motorcycle’s electrical system, the main harness powers everything from ignition to lighting and indicators. A worn or damaged harness can lead to intermittent failures, short circuits, or complete electrical breakdowns. Replacing it with the correct OEM part restores factory functionality and safety.

The 1040607/B harness comes with all original connectors and protective sheathing, designed to withstand heat, vibration, and India’s demanding road conditions. It installs directly into your motorcycle’s stock wiring layout—no cutting, splicing, or guesswork required.

At Under The Hood (Varanasi), we provide authentic Royal Enfield parts, backed with GST invoicing, quality inspection, and fast pan-India shipping. While competitor listings often overstate compatibility, this listing is precisely verified for 500cc BS4 models only—helping you shop with confidence.

Key Features

• OEM Verified Fitment: Matches factory part number 1040607/B

• Confirmed Models: Classic 500 BS4 and Bullet 500 BS4 (EFI)

• Plug-and-Play: Direct bolt-on fit with OEM connectors

• Durable Build: Heat-resistant insulation and protective sleeves

• Restores Reliability: Eliminates shorts, weak signals, and intermittent failures

• Factory Standard: Genuine Royal Enfield spare, not aftermarket

• QC Checked & GST Invoiced: Authenticity guaranteed with each purchase

• Fast Shipping: Ready stock with secure packaging

Compatibility Table

❌ Not compatible with 350cc models, Thunderbird, Himalayan, Interceptor 650, Meteor, or J-Series (Reborn/Hunter).

What’s in the Box

• 1 × Main Wiring Harness – Part 1040607/B

Installation Notes

• Tools Needed: Basic screwdrivers, spanners, and cable routing clips

• Installation Time: 45–60 minutes (professional mechanic recommended)

• Tip: Route new harness exactly like the old one; avoid pinching wires under tank/seat

• Authenticity: 100% OEM Royal Enfield part with GST invoice

FAQs

Q1. What exactly is 1040607/B?
It’s the OEM “HARNESS, MAIN” (factory main wiring loom) as named in the official catalog/ratelist. 

Q2. Which bike does it fit?
Classic 500 (BS4, 2017–2020) — confirmed by reputable Indian sellers. Share your VIN if you need us to double-check your exact variant. 

Q3. Does it include sub-harnesses (tail/indicators)?
This is the main harness.

Q4. Is it genuine OEM or aftermarket?
Genuine OEM Royal Enfield, listed in the official catalog with part number 1040607/B. 

Q5. Why replace the harness?
To fix intermittent electrics, cracked insulation, corroded connectors or previous non-OEM splices that cause shorts/misfires.