• 594870/A Royal Enfield fuel gauge unit – Thunderbird 350/500
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594870/A – Fuel Gauge Unit (Tank Level Sensor) for Thunderbird 350, Thunderbird 500, Thunderbird X 350/500 & Rumbler 350/500 (BS3–BS4) – Genuine Royal Enfield

594870/A – Fuel Gauge Unit (Tank Level Sensor) for Thunderbird 350, Thunderbird 500, Thunderbird X 350/500 & Rumbler 350/500 (BS3–BS4) – Genuine Royal Enfield

Rs. 335.00
Rs. 340.00 Rs. 335.00
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This is the fiche-listed Royal Enfield 594870/A – Fuel Gauge Unit used on the Thunderbird family and its Rumbler derivatives. Multiple dealer pages list it exactly as “FUEL GAUGE UNIT – 594870/A” and tie it to Thunderbird 350, Thunderbird 500, Thunderbird X 500, TB 350 BS4, and Rumbler 500/350 – so we can safely publish those models as confirmed, and skip everything else to avoid returns. 

It’s the OE sender/float that sits in the tank and feeds the fuel-level signal to your cluster. If your TB/Rumbler shows stuck fuel level, drops to empty, or reads wrong after refuelling, it’s usually this unit. Because it’s OEM, the float arm length, resistance range and connector match your Thunderbird/Rumbler harness — no wiring cuts, no guess resistor. Remove old unit, drop in 594870/A with a fresh O-ring (if your tank uses one), reconnect, and your gauge will read the way RE intended.

Key Features

  • Genuine OEM Royal Enfield fuel gauge / tank level sender – 594870/A. 

  • Correct float length & ohm range for TB/Rumbler clusters → accurate readings.

  • OE plug & mounting → drop-in replacement, no splicing.

  • Restores faulty / stuck fuel-level indication.

  • Supplied per piece in RE-labelled pack.

  • Best used with a new tank seal/O-ring to prevent seepage.

Compatibility Table

Model Engine / Platform BS Stage / Years Status
Thunderbird 350 UCE 346 cc BS3–BS4 Listed as fuel gauge unit 594870/A. 
Thunderbird 500 UCE 499 cc BS3–BS4 Same part number on dealer sites.
Thunderbird X 500 / TB X 500 UCE 499 cc BS4
Rumbler 500 UCE 499 cc BS3
Rumbler 350 UCE 346 cc BS3

Check Part Number Before Purchase

Variants

  • If the bike also needs the cluster/fuel-meter itself, that’s a separate PN.

  • Replace the tank gasket/O-ring with this install if the old one is flattened.

FAQs

Q1. What does this part actually do?
It’s the in-tank level sender – the float moves, the resistance changes, the meter shows fuel.

Q2. My gauge shows empty all the time – will this fix it?
If wiring and the cluster are fine, yes. 594870/A is the common failure point on these TB/Rumbler bikes.

Q3. Can I use this on a Classic 350 UCE?
Not fiche-confirmed – don’t list it there. Stick to Thunderbird / Rumbler.

Q4. Do I have to drop the whole tank?
Usually you remove the sender from the tank opening. Do it on a low-fuel tank and replace the seal.

Q5. Is this the same as 594870 (no suffix)?
Current dealer pages show 594870/A as the live supply; treat /A as the updated version.

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