Mini Countryman Radiator: Specs, Fitment & Common Faults

On the Countryman, there's genuinely no temperature gauge, only a warning light that illuminates after the engine is already dangerously hot — plus a money-saving finding about doing the thermostat housing, link pipe, and water pump together.

Illustration for editorial purposes

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Mini Countryman Radiator: OEM Part Number

Manual gearbox, all engines	Standard radiator with no transmission cooling circuit
Automatic (torque converter), standard engines	A separate, dedicated automatic transmission oil cooler is fitted as a genuinely distinct component from the radiator itself, not a tank built into it
Cooper S/JCW, especially ALL4 (four-wheel drive)	An additional auxiliary radiator is fitted on higher-output and four-wheel-drive variants to handle the increased cooling demands — genuinely more cooling hardware than the standard front-wheel-drive Cooper

Accuracy note: genuinely worth knowing: radiator hose connection points and mounting brackets on the Countryman can differ subtly between facelifted and pre-facelift versions of the same generation, even when the core itself is unchanged.

Mini Countryman Radiator: The Part That Keeps Everything Else From Cooking

This isn't a part anyone gets excited about, but on the Mini Countryman, 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.

Before you buy: radiator size and design vary significantly by engine size, transmission type, and whether your car has air conditioning. Always confirm against your VIN before ordering.

Mini Countryman Radiator: What It Does

Keeping the Mini Countryman'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.

Mini Countryman Radiator reference plate

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A Genuinely Important Design Limitation Worth Knowing — Mini Countryman Radiator

This is genuinely important to understand about how these cars display temperature: there's no conventional temperature gauge at all, only a warning light — meaning by the time this light illuminates, the engine has typically already reached a genuinely damaging temperature, rather than giving you the kind of early, gradual warning a traditional gauge would provide.

A genuinely useful, money-saving finding worth knowing if the thermostat housing needs replacing: the plastic thermostat housing and a separate plastic link pipe at the rear of the engine both tend to degrade with age and heat at a broadly similar rate, and accessing either requires removing the water pump regardless. It's genuinely worth replacing all three together as a preventative measure while you already have the necessary access.

It's also genuinely worth knowing that certain performance variants have a separate, additional auxiliary water pump specifically to continue circulating coolant after the engine has been switched off, to help cool the turbocharger — a genuine, additional component that can develop its own faults independently of the main water pump.

Mini Countryman 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 Mini Radiator

The same part, covered across other Mini models.