Peugeot Partner Radiator: Specs, Fitment & Common Faults
On the Partner, which side a coolant leak comes from often tells you whether it's the water pump or thermostat housing — plus why "no puddle" doesn't mean no leak.
Illustration for editorial purposes
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Peugeot Partner Radiator: OEM Part Number
| Manual gearbox, all engines | Standard radiator with no transmission cooling circuit |
|---|---|
| Automatic (EAT6/EAT8), all engines | Genuinely uses a separate automatic transmission oil cooler, connected via pipes into the radiator's coolant circuit — confirmed shared across the wider PSA Group range (Peugeot and Citroen models sharing one common part number), not a tank built into the radiator itself |
A Genuine, Useful Diagnostic Shortcut for RHD Cars — Peugeot Partner Radiator
If you've found a coolant leak and can see roughly which side of the engine bay it's coming from, this is genuinely useful to know on a right-hand-drive UK car: a leak from the driver's side generally points to the water pump, while a leak from the passenger side generally points to the thermostat housing — both are common, well-documented failure points, and knowing which side narrows down the likely cause considerably before a garage even looks at it.
It's also worth knowing that both the water pump and thermostat housing have been revised by Peugeot over time — if you're having either replaced, confirming you're getting the current, updated part reference rather than an older superseded version is worth asking about directly.
Peugeot Partner Radiator: The Part That Keeps Everything Else From Cooking
This isn't a part anyone gets excited about, but on the Peugeot Partner, overlooked cooling problems are responsible for most serious engine failures that aren't simple wear-and-tear. Catching the early symptoms is about the cheapest insurance available against a major bill later.
Peugeot Partner Radiator: What It Does
Keeping the Peugeot Partner's engine temperature within safe limits comes down to the radiator's job of transferring heat from the coolant into the surrounding air. Automatic-gearbox versions often build in a second circuit for transmission fluid cooling too, which is exactly why fitting the wrong part number can cause two problems, not one.
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Peugeot Partner 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 Peugeot Radiator
The same part, covered across other Peugeot models.