Fiat 500 Radiator: Specs, Fitment & Common Faults
A genuinely important distinction: this electric model has an entirely different cooling arrangement from the petrol range's well-documented thermostat housing issue — with separate battery and motor cooling loops instead.
Illustration for editorial purposes
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A Genuinely Important Distinction Worth Knowing on This Electric Model
This is genuinely worth knowing before applying advice aimed at the older petrol 500 to this car: the conventional Fire and TwinAir petrol engines used in the rest of Fiat's small car range have a well-documented history of coolant leaks from a cracking plastic thermostat housing spigot — but this electric model has an entirely different cooling arrangement, typically including a dedicated loop for the battery pack and another for the motor and power electronics, rather than a single engine cooling system built around a thermostat housing. It's worth confirming with a specialist or dealer exactly which cooling circuits your specific car has and how they're structured, rather than assuming the older petrol model's well-known thermostat housing fault applies here.
It's also worth knowing that coolant loss on any vehicle, electric or otherwise, is worth investigating promptly rather than simply topping up repeatedly, since a slow leak that isn't addressed can eventually affect a system's ability to properly regulate temperature when it's needed most.
Fiat 500 Radiator: The Part That Keeps Everything Else From Cooking
Unglamorous as it is, the Fiat 500's cooling system sits behind nearly every serious engine failure that isn't just ordinary wear — and one that went unaddressed for too long. Noticing early warning signs here is a small cost against a potentially very large one.
Fiat 500 Radiator: OEM Part Number
| Manual gearbox, all engines | Standard radiator with no transmission cooling circuit |
|---|---|
| Dualogic (automated manual, where fitted) | Genuinely a robotised manual gearbox with an automated clutch rather than a true torque-converter automatic — it does not require the same dedicated transmission fluid cooling circuit as a genuine automatic, since mechanically it remains a manual gearbox underneath |
| 6-speed automatic (Aisin, where fitted) | A genuine torque-converter automatic that does need dedicated transmission fluid cooling, provided via the coolant circuit — confirmed as a completely different transmission from Dualogic, not just a different name for the same hardware |
Electric 500 owners on forums (discussing the broader 500e platform family) describe two separate cooling circuits — one dedicated to the power electronics (motor, inverter, charger) and a second, independent circuit for the battery, which can be electrically heated or actively chilled by the air conditioning system. While this describes the general architecture rather than confirmed identical detail for the European FA1-chassis car, it's worth being aware there may be more than one "radiator" involved before assuming a single part covers the whole cooling system.
Fiat 500 Radiator: What It Does
On the Fiat 500, engine coolant sheds its heat into the passing air via the radiator, which is what keeps engine temperature in a safe working range. On automatics, it frequently pulls double duty cooling the transmission fluid through its own internal circuit — a detail that makes getting the exact part number right especially important.
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Fiat 500 Radiator: Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Radiator Guide for the three common failure modes, confirming fitment against your VIN, and OEM vs aftermarket guidance.
More Fiat Radiator
The same part, covered across other Fiat models.