Mitsubishi ASX Radiator: Specs, Fitment & Common Faults

A genuinely useful, specific diagnostic clue on related models: solid radiator hoses, boiling in the header tank, and temperature dropping with the heater on full together point toward a stuck thermostat.

Illustration for editorial purposes

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OEM Part Number: 1350A764 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 636034 / Denso DRM45053

Accuracy note: Covers the Mitsubishi ASX (2010-) 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 636034 (700 x 408 x 26 mm, aluminium core with plastic tanks, fits 1.8 DI-D 116/150, 1.8 DI-D 4WD and 2.2 DI-D 4WD); Denso DRM45053; Mahle CR 2239 000S; NRF 59260; Van Wezel 09012708; Prasco CI440R003; Hella not listed.
Core sizes & variants	This 700 x 408 mm radiator is the diesel unit (OE 1350A764 / 1611261880) and is shared with the Citroen C4 Aircross and Peugeot 4008 1.8 HDi.
Genuine (OE) numbers quoted	1350A764; 1611261880
Fitment notes	Inlet is 28 mm and outlet 35 mm, so the hoses are not interchangeable. Petrol cars should have the radiator ordered against the VIN.

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

Mitsubishi ASX Radiator: The Part That Keeps Everything Else From Cooking

There's nothing exciting about this component, yet on the Mitsubishi ASX, 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.

Mitsubishi ASX Radiator: What It Does

The Mitsubishi ASX 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.

Mitsubishi ASX Radiator: Watch: Replacing It

🎬 Watch: Mitsubishi ASX 1.6i wymiana chłodnicy / radiator replacement

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Polish channel with bilingual title; IruZiijeUIQ is an alternative follow-along

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A Genuinely Useful, Specific Diagnostic Clue Worth Knowing — Mitsubishi ASX Radiator

If you're facing overheating, this specific combination of symptoms, documented on related Mitsubishi models, is genuinely worth knowing about: both radiator hoses feeling solid rather than squishy, combined with visible boiling in the header tank, and the temperature temporarily dropping when the heater is switched on full, strongly points toward a stuck thermostat restricting coolant flow.

A genuinely important warning worth knowing: while an engine will technically still run without a thermostat, it will experience increased wear and coolant can flow through the radiator too quickly to cool properly — worth replacing a faulty thermostat properly rather than removing it as a supposed quick fix.

It's also genuinely worth knowing that if a cooling system has recently had a new radiator fitted, it's worth confirming a proper flush and bleed was actually carried out, since air trapped in the system can cause overheating unrelated to the new part itself.

Mitsubishi ASX 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 Mitsubishi Radiator

The same part, covered across other Mitsubishi models.