Hyundai Kona Radiator: Specs, Fitment & Common Faults

On the Kona, a leak specifically from the weep hole near the A/C compressor genuinely points toward a failing water pump seal.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — radiators (aftermarket) Nissens 606261 / Denso DRM43019

Accuracy note: Covers the Hyundai Kona (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 606261 (648 x 315 x 26 mm, without expansion tank); Nissens 607326 (650 x 291 x 32 mm, without sealing cap, without expansion tank, without gasket/seal); Nissens 606263 (610 x 403 x 16 mm, without cap, without expansion tank, with oil cooler, with gaskets/seals); Nissens 66763 (485 x 468 x 16 mm, without sealing cap, without expansion tank, with oil cooler, without gasket/seal); Nissens 67551 (487 x 468 x 26 mm, with cap, without expansion tank, with gaskets/seals); Denso DRM43019 (512 x 364 x 16 mm); NRF 550128 (650 x 300 x 24 mm); NRF 550349 (610 x 403 x 16 mm)
Core sizes & variants	Several different cores are listed across the 1.0 T-GDi, 1.6 T-GDi, 1.6 CRDi and hybrid versions; the automatic/DCT versions take a core with built-in oil cooler.
Genuine (OE) numbers quoted	None quoted in catalogue listings — order a genuine unit against your VIN
Fitment notes	The Kona Electric uses a different cooling pack entirely; these listings are for the petrol, diesel and hybrid cars.

Accuracy note: genuinely worth knowing: Hyundai radiator part numbers for the Kona frequently change mid-generation as engines are updated or facelifted, so a part valid for an early build year may not fit a later one even within the same model name.

A Genuinely Useful Diagnostic Detail Worth Knowing — Hyundai Kona Radiator

If you're trying to pin down exactly where a coolant leak is coming from, this is genuinely worth knowing: a leak specifically from the small weep hole in the engine block near the A/C compressor points toward a failing water pump seal rather than a more general leak elsewhere.

A genuinely honest point worth knowing even after a recent water pump replacement: if a leak returns despite a relatively recent replacement, internal seals or bearings within even a new pump can occasionally be compromised, or the pump can be damaged by an unrelated issue. It's worth checking the timing belt tensioner and pulleys for wear at the same time, since improper belt tension can itself damage an otherwise sound water pump.

It's also worth knowing that the thermostat housing sits toward the front of the engine, higher up than where normal AC condensation would appear — worth checking this specific area if you're unsure whether water underneath the car is genuine coolant or harmless condensation.

Hyundai Kona Radiator: The Part That Keeps Everything Else From Cooking

It's an unglamorous part, but on the Hyundai Kona, the cooling system is behind almost every serious non-wear engine failure that could have been prevented. Spotting trouble here early is about as cheap an insurance policy as exists against a genuinely expensive repair bill.

Hyundai Kona Radiator: Watch: Replacing It

🎬 Watch: HOW TO REPLACE RADIATOR ON HYUNDAI, RADIATOR REMOVAL REPLACEMENT (sister (hyundai, model not stated in title))

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Generic Hyundai radiator job; no Kona-specific video found

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.

Hyundai Kona Radiator: What It Does

On the Hyundai Kona, heat from the engine coolant is shed to the surrounding air through the radiator, keeping engine temperature in a safe range. On automatic gearboxes, it often doubles up, cooling transmission fluid through a separate internal circuit too — which is why getting the exact part number right matters more here than on a simple heat exchanger.

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Hyundai Kona 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 Hyundai Radiator

The same part, covered across other Hyundai models.