Nissan Qashqai Radiator: Specs, Fitment & Common Faults

A genuinely severe, well-documented fault: a real forum tally found over 40% of thermostat housing failures resulted in a full replacement engine, with costs ranging from £700 to £10,000.

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OEM Part Number: 214104EA0A (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 637665 / Valeo 735625

Accuracy note: Covers the Nissan Qashqai (J11 2014-2021) 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 637665 (539 x 468 x 16 mm, aluminium core with plastic tanks, 1.5 dCi K9K and 2.0 MR20DD); Valeo 735625; Denso DRM46062; Mahle CR 2241 000S; NRF 59254; Van Wezel 13012703; Magneti Marelli 350213205900; Prasco DS712R001
Core sizes & variants	The 1.5 dCi diesel and 2.0 petrol share one radiator, and the 1.2 DIG-T turbo petrol takes a separate radiator of the same 539 x 468 x 16 mm size but different internal design and part number, so the two are not interchangeable. The 1.6 dCi and 1.3 DIG-T (2018 on) were not confirmed on these listings.
Genuine (OE) numbers quoted	214104EA0A; 214104EA1A; 214107399R; 2140000Q3L (1.5 dCi/2.0)
Fitment notes	Both radiators have 35 mm hose connections and the diesel unit is also listed for the Renault Kadjar 1.5 dCi. Match the engine code rather than the model year, because both radiators were fitted throughout the J11 run.

Accuracy note: genuinely worth knowing: automatic gearbox Qashqais typically need a radiator with a built-in transmission oil cooler that manual versions don't have — ordering the manual-spec part for an automatic car will fit, but won't cool the gearbox oil properly.

A Genuinely Severe, Well-Documented Fault Worth Understanding — Nissan Qashqai Radiator

If your Qashqai has the 1.3 DIG-T engine, this is genuinely worth understanding given how consistently and severely it's documented: the plastic thermostat housing has a well-known tendency to crack or shear off, and one dedicated forum thread tracking documented cases recorded 14 affected owners over time — of those, 8 needed the thermostat housing replaced, but 6 (over 40% of documented cases) needed a full replacement engine after the leak went undetected long enough to cause serious damage. Real cost figures worth knowing: a straightforward housing repair has been quoted around £700 out of warranty, while a full engine replacement following undetected damage has been quoted as high as £10,000. Failures have been documented across a genuinely wide range of mileages, from as low as 28,000km up to 140,000km, so this isn't limited to only very high-mileage examples.

A genuinely important consumer rights point worth knowing if a dealer resists a warranty or goodwill claim: one forum member's specific, useful advice worth remembering is that a thermostat housing is not a scheduled maintenance item — meaning a dealer's usual "it's just wear and tear" framing doesn't automatically apply the same way it might to a brake pad or filter. If you're facing resistance, it's genuinely worth pointing out directly that this is a component failure rather than a consumable wearing out on schedule.

A genuinely useful early warning sign worth knowing: an emptying coolant reservoir with absolutely no visible drips anywhere underneath the car has been documented repeatedly — coolant escaping and atomising against a hot component rather than dripping to the ground is a real possibility, so the absence of a puddle doesn't mean the absence of a genuine leak.

Nissan Qashqai Radiator: The Part That Keeps Everything Else From Cooking

Unglamorous as it is, the Nissan Qashqai'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.

Nissan Qashqai Radiator: Watch: Replacing It

🎬 Watch: Замена основного радиатора Nissan Qashqai своими руками (non-english)

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Russian main-radiator swap; generation not stated, verify J11

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.

Nissan Qashqai Radiator: What It Does

On the Nissan Qashqai, 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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Nissan Qashqai 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 Nissan Radiator

The same part, covered across other Nissan models.