Vauxhall Crossland X Radiator: Specs, Fitment & Common Faults

A failing expansion tank cap seal is a well-documented, often-overlooked cause of coolant loss on the Crossland X — worth checking before assuming a bigger fault.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — radiators (aftermarket) Nissens 636007 / Valeo 733101

Accuracy note: Covers the Vauxhall Crossland X (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 636007 (380 x 544 x 23 mm, without cap, without expansion tank, with gaskets/seals); Nissens 63505 (380 x 415 x 34 mm, without sealing cap, without expansion tank, without gasket/seal); Valeo 733101 (544 x 380 x 23 mm, for vehicles without oil cooler, without coolant regulator, without cap); Valeo 732831 (396 x 382 x 23 mm, for vehicles without oil cooler, without coolant regulator); Denso DRM21108 (380 x 389 x 27 mm); NRF 58226A (544 x 380 x 23 mm); NRF 58226 (538 x 380 x 28 mm, with attachment parts); NRF 50430 (403 x 380 x 26 mm)
Core sizes & variants	PSA-sourced radiator on a 380 mm core height; the 1.2 PureTech turbo and 1.5 diesel take the 544 mm wide core, the non-turbo 1.2 the shorter 400 mm core.
Genuine (OE) numbers quoted	None quoted in catalogue listings — order a genuine unit against your VIN
Fitment notes	The Crossland X sits on the Peugeot 2008/Citroen C3 platform rather than Vauxhall's own, so PSA-catalogued radiators fit and Astra/Corsa parts do not.

Accuracy note: genuinely worth knowing: Vauxhall sometimes fits a heavier-duty radiator as standard on Crossland X trims with towing packs or higher-accessory-load options — worth confirming your exact spec rather than assuming the base-model rating applies.

A Genuinely Common Cause of "Mystery" Coolant Loss — Vauxhall Crossland X Radiator

If coolant keeps disappearing with no visible leak underneath the car, it's genuinely worth checking the expansion tank cap itself before assuming a more expensive fault. A failing seal in the cap is a well-documented, commonly overlooked cause of coolant loss and a hissing sound once the engine's hot — and it's often overlooked in favour of investigating the thermostat or head gasket first, even though it's a genuinely cheap part to simply replace and rule out.

A genuinely useful filling technique: air pockets trapped in the cooling system during a refill are a common, underappreciated cause of overheating symptoms and a coolant level that seems to disappear — filling too quickly is the usual cause. Adding coolant slowly, almost dribbling it in, gives trapped air a proper chance to escape rather than getting sealed into a pocket that later causes symptoms that look exactly like a leak or failing thermostat.

Vauxhall Crossland X Radiator: The Part That Keeps Everything Else From Cooking

There's nothing exciting about this component, yet on the Vauxhall Crossland X, most catastrophic engine failures that aren't simply down to wear trace back to a cooling problem someone ignored too long. Catching it early is cheap; catching it late usually isn't.

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.

Vauxhall Crossland X Radiator: Watch: Replacing It

🎬 Watch: Citroen C3 Peugeot 207 1.4 Replace Radiator (sister (citroen c3/peugeot 207))

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PSA PF1 platform family the Crossland X is built on; older PF1 cars

Vauxhall Crossland X Radiator reference plate

Vauxhall Crossland X Radiator: What It Does

The Vauxhall Crossland X radiator's core job is moving heat out of the engine coolant and into the passing air, holding engine temperature within safe limits. Automatic versions frequently add a second internal circuit for transmission fluid cooling, which is exactly why the correct part number carries extra weight on this component.

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Vauxhall Crossland X 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 Vauxhall Radiator

The same part, covered across other Vauxhall models.