Volvo V40 Radiator: Specs, Fitment & Common Faults

On the V40, Volvo has genuinely issued confirmed safety recalls on related models covering a coolant hose fire risk and a corroding cooling unit cover.

Illustration for editorial purposes

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OEM Part Number: 31319064 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 66857 / Valeo 735550

Accuracy note: Covers the Volvo V40 (2012-2019) 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)	Van Wezel (Van Wezel) 59002186 (672 x 470 x 18 mm, soldered aluminium core with plastic tanks, fits D2 1.6 and 2.0, D3, D4, T2 and T3 1.6 GTDi, T4 1.6 GTDi, 2.0 T4 and T4 AWD, engine codes D4162T, D4204T8/T9/T13/T14/T16, B4164T/T3/T4, B4204T19/T21, B5204T8); Nissens 66857; Valeo 735550; NRF 58499; Ava VO2186 / FDA2421; Kamoka 7705058; Thermotec D7G036TT.
Core sizes & variants	One 672 x 470 mm radiator covers the whole V40 range, four- and five-cylinder, petrol and diesel, front- and all-wheel drive, manual and automatic. It is the Ford Focus III-derived cooling pack, which is why Ford-type Ava and Electro Auto numbers also appear.
Genuine (OE) numbers quoted	31319064
Fitment notes	Connection sizes are not published; the part is a straight swap across the range, so confirm only the year band.

Accuracy note: genuinely worth knowing: radiator core size and construction can differ between petrol and diesel V40 engines, and again between manual and automatic gearboxes where the automatic needs an integrated oil cooler circuit — confirm your exact engine code and transmission before ordering.

Volvo V40 Radiator: The Part That Keeps Everything Else From Cooking

This isn't a part anyone gets excited about, but on the Volvo V40, 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.

Volvo V40 Radiator: What It Does

Keeping the Volvo V40'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.

Volvo V40 Radiator: Watch: Replacing It

🎬 Watch: Radiator Replacement on a Volvo V60/S60 2.0 '14-16 (sister (volvo v60/s60 2014-16; different platform, closest volvo found))

Watch on YouTube ↗

Nothing on V40 itself; V40 condenser job https://www.youtube.com/watch?v=ZuzGNd3Au_o shows front-end access

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A Genuinely Important Habit Worth Building: Checking for Open Recalls — Volvo V40 Radiator

Volvo has issued confirmed safety recalls on related models covering a coolant hose that can crack and leak onto extremely hot components, creating a genuine fire risk, and a separate UK-specific recall for a corroding cooling unit cover that could let moisture reach electrical parts. It's genuinely worth checking your specific VIN against the official recall register directly, particularly on a used car where you can't be certain a previous owner had every relevant recall completed.

A genuinely specific, real diagnostic finding worth knowing about a hard-to-trace slow leak: a T-shaped valve adapter connecting the heater hose and bleeder hose, hidden below the air hose that runs to the air filter box, has been documented as the source of a persistent, difficult-to-locate slow coolant leak on related Volvo models.

It's also genuinely worth knowing an honest account: documented cases describe a car repeatedly displaying an overheating warning at seemingly random intervals, with the actual cause turning out to be an incorrectly displayed warning code rather than a genuine overheat.

Volvo V40 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 Volvo Radiator

The same part, covered across other Volvo models.