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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OEM Part Number: 17117617636 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 607103 / Mahle CR 2748 000P

Accuracy note: Covers the Mini Countryman (F60 2017-) as listed in the UK aftermarket catalogues. Radiators are sold by engine, gearbox and air-conditioning fitment, and one model usually has two or three different cores — a thicker core for diesels and automatics, a thinner one for small petrols — with different hose positions, so a radiator for the wrong engine will not connect up. The references below are UK aftermarket listings whose fitment lists name this generation, labelled by brand with the core size in mm; genuine numbers are those quoted against the listing. Check your engine code and whether the car has air conditioning against your VIN, and replace the coolant and bleed the system after fitting.

Radiators (aftermarket)	Nissens 607103 (682 x 299 x 26 mm, aluminium core with plastic tanks, Cooper S and Cooper S ALL4 B46/B48 2.0 petrol); NRF 59236; Van Wezel 06012751; Hella 8MK 366 300-431; AKS Dasis 050105N; Nissens 606391 (682 x 299 x 22 mm, One D B37 1.5 diesel); NRF 550362; Van Wezel 06012745
Core sizes & variants	All three radiators share the same 680 x 299 mm face but differ in core depth and connections: the Cooper S petrol and Cooper SD diesel take 26 mm cores, while the One D takes a 22 mm core. The Cooper and Cooper D (B38 1.5 petrol and 1.5 diesel 150) and the Cooper S E plug-in hybrid were not confirmed on these listings.
Genuine (OE) numbers quoted	17117617636; 7617636 (Cooper S); 17118586321 (One D); 17118586324; 8586324 (Cooper SD)
Fitment notes	Hose connections are 32.5 mm (32 mm outlet on the Cooper S unit) and the Nissens radiators come with gaskets and seals. These radiators are shared with the BMW X1 F48, X2 F39 and 2 Series Active Tourer, so stock is good.

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: Watch: Replacing It

🎬 Watch: How to Fit A Radiator, Air Conditioning and Intercooler Mini F56 John Cooper Works Part 4. (sister (mini f56 cooper))

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UKL platform sister; fitting radiator pack during crash repair

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.