TPS Add-On Lead / Sub-Harness (VB51) for Royal Enfield Bullet 500 UCE – 582601/A (Throttle Position Sensor Lead)

582601/A is a genuine Royal Enfield “VB 51 – Add-On Lead – TPS”: a small wiring lead/sub-harness used for the Throttle Position Sensor (TPS) circuit on Bullet 500 UCE (VB51) applications. It’s the correct part when your existing TPS lead is cut, brittle, intermittently open, or when connectors have become loose/corroded—symptoms that can show up as jerky throttle response, unstable idle, hesitation, or TPS-related error behavior depending on your wiring setup.

This part is listed in the Bullet 500 parts catalogue as “582601/A – Add on Lead – TPS”. It is also sold by multiple OEM-focused dealers under the exact same description and part number.

Also searched as: TPS wiring lead, TPS coupler wire, TPS sub harness, VB51 TPS lead, throttle sensor wire.

Before you buy: Confirm your bike is Bullet 500 UCE (VB51) and match the connector shape/pins with your old lead photo before ordering.

Key Features 

• Genuine Royal Enfield part number 582601/A (exact OE spec)

• Official catalogue naming: “Add on Lead – TPS”

• Designed for TPS circuit (Throttle Position Sensor lead/sub-harness)

• Correct application called out by dealers for Bullet 500 UCE / VB51

• Helps restore stable throttle signal when old lead is damaged/loose (common real-world failure point)

• Plug-type part: connector match is mandatory (return-prevention)

• Ideal replacement during carb/TPS wiring checks where VB51 harness uses TPS lead (verify by photo)

• Quantity: 1 piece per order (as listed by dealers)

Compatibility Table

PLEASE CONFIRM PART NUMBER BEFORE PURCHASE 

Variants
No variants.

FAQs 

Q1 (Fitment): How do I confirm 582601/A is correct for my Bullet 500?
Check that your bike is Bullet 500 UCE / VB51, then match the connector shape/pin count with your existing TPS lead. The part is listed as “Add on Lead – TPS” in the Bullet 500 catalogue.

Q2 (Fitment): Is this for all Bullet 500s or only specific years/versions?
It’s confirmed for Bullet 500 UCE (VB51) as a catalogue item. Exact year/EFI vs non-EFI usage can vary by wiring harness—so use VIN + connector photo confirmation to avoid mismatch.

Q3 (Comparison): OEM vs aftermarket TPS lead—what’s the difference?
OEM (582601/A) matches the original connector, wire spec, and fitment intended in the parts catalogue and dealer EPCs. Aftermarket leads often differ in connector lock style and wire length, which is a common cause of wrong orders.

Q4 (Installation): Can I install this myself?
If you can access the TPS area and route the lead safely, it’s usually plug-and-fit—but disconnect the battery, avoid pin bending, and ensure the wire is not under tension or rubbing on hot/ moving parts.

Q5 (Symptoms): What problems does a bad TPS lead cause?
Common symptoms include hesitation, inconsistent throttle response, unstable idle, and intermittent sensor signal behavior—especially if the old lead is cracked, pin-loose, or corroded.

Q6 (Returns-prevention): What photo should I check/share before ordering?
Share a clear photo of both ends of your existing TPS lead connectors (close-up of the locking tab + pins). If it doesn’t match, don’t order by “Bullet 500” name alone—order strictly by part number + connector.