Mercedes-Benz E-Class Radiator: Specs, Fitment & Common Faults

A genuinely distinctive finding: a slow water pump seal leak can drip coolant onto the spinning pulley, which flings it off and makes the leak essentially disappear rather than pooling anywhere obvious — worth checking behind the pulley if a slow coolant loss can't otherwise be explained.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — radiators (aftermarket) Nissens 606301 / Valeo 701314

Accuracy note: Covers the Mercedes-Benz E-Class (W213 2016-) 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 606301 (640 x 498 x 26 mm, aluminium core, plastic tanks, 38.5 mm connections, supplied with seals, fits E 200, E 200 4Matic, E 300 and E 350 EQ Boost petrol including All-Terrain, plus GLC X253/C253 and CLS C257 with the same engines); Valeo 701314; Denso DRM17076; Mahle CR 2604 000P; Van Wezel 30012723; Prasco ME666R001; Maxgear AC230443
Core sizes & variants	This 640 x 498 mm core serves all the 2.0 petrol W213 variants. The OM654 diesels (E 200 d, E 220 d, E 300 d) use a different radiator, Mercedes A0995003500, which is not on this fit list, and the six-cylinder and AMG cars differ again.
Genuine (OE) numbers quoted	None quoted in catalogue listings — order a genuine unit against your VIN
Fitment notes	Supplied with gaskets and seals

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

Mercedes-Benz E-Class Radiator: The Part That Keeps Everything Else From Cooking

Nothing about this component is glamorous, but on the Mercedes-Benz E-Class, almost every serious engine failure that isn't wear-related traces back to a cooling system problem left unaddressed. Catching the early signs here is genuinely cheap insurance against a much bigger bill.

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.

Mercedes-Benz E-Class Radiator: What It Does

The Mercedes-Benz E-Class's radiator transfers heat from the engine coolant to the surrounding air, keeping engine temperature within a safe operating range. On automatic versions, it often also cools transmission fluid through a separate internal circuit — one more reason the correct part number matters so much here.

Mercedes-Benz E-Class Radiator: Watch: Replacing It

🎬 Watch: Mercedes C43 AMG Radiator Replacement DIY (2015-2021 Mercedes W205 C400, C450, M276) (sister (mercedes w205 c-class))

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W205 shares the MRA platform with W213; V6 model

Mercedes-Benz E-Class Radiator reference plate

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A Genuinely Distinctive, Useful Finding Worth Knowing — Mercedes-Benz E-Class Radiator

If a coolant level keeps dropping slowly with no obvious puddle or visible leak anywhere underneath the car, this is genuinely worth knowing: a slow water pump seal leak can drip coolant directly onto the spinning pulley behind it, which then flings the coolant off as it rotates, causing it to essentially disappear rather than pooling anywhere obvious. This can make a genuine, ongoing leak surprisingly difficult to trace for some time, sometimes only becoming an obvious, large leak once the seal eventually fails more completely — worth having the area behind the pulley specifically inspected with a torch and mirror if a slow coolant loss can't otherwise be explained.

A genuinely honest finding worth knowing about why this happens: the water pump on many of these diesel engines is made from plastic, a cost-cutting measure that makes failure common enough that Mercedes-Benz offer a dedicated exchange service using reconditioned units for this specific component.

It's also genuinely worth knowing that a water pump and thermostat housing failing together has been documented on genuinely young, low-mileage cars, with Mercedes-Benz UK having granted a goodwill discount specifically on the water pump element in at least one case, worth asking about this if facing a similar early failure.

Mercedes-Benz E-Class 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 Mercedes-Benz Radiator

The same part, covered across other Mercedes-Benz models.