Kia Picanto Radiator: Specs, Fitment & Common Faults

On the Picanto, a radiator, thermostat, and housing were all replaced on a related model, yet the coolant smell genuinely persisted, pointing toward the heater core.

Illustration for editorial purposes

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OEM Part Number: 25310G6200 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 606865 / Denso DRM43014

Accuracy note: Covers the Kia Picanto (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 606865 (410 x 429 x 16 mm, brazed aluminium with plastic tanks, 1.0 and 1.0 LPG G3LA/G3LD, 1.2 G4LA); Denso DRM43014; NRF 550199; NRF 550206; Van Wezel 83012728; Hella 8MK 366 309-201; AKS Dasis 560177N
Core sizes & variants	One 410 x 429 mm core covers the 1.0, 1.0 LPG and 1.2 petrol engines.
Genuine (OE) numbers quoted	25310G6200; 25310G6000; 25310G6100
Fitment notes	33 mm inlet and outlet; supplied with gaskets and seals.

Accuracy note: genuinely worth knowing: automatic gearbox Picantos typically need a radiator with a built-in transmission oil cooler that manual versions don't have — ordering the manual-spec part for an automatic car will fit, but won't cool the gearbox oil properly.

A Genuinely Honest Account Worth Knowing If the Smell Persists — Kia Picanto Radiator

This is genuinely worth knowing if you're chasing a coolant smell that won't go away: one documented case on a related model saw the radiator, thermostat, and thermostat housing all replaced in turn, with the car not overheating, yet the smell of coolant persisted after driving. If you've replaced the obvious components and the smell remains, it's genuinely worth having the heater core checked specifically.

A genuinely useful diagnostic distinction worth knowing: a leak from the water pump's weep hole tends to show ongoing, visible wetness, whereas a leak from a plastic radiator tank seal can dry up quickly once system pressure is released, making it considerably harder to spot on a static inspection.

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.

Kia Picanto Radiator: The Part That Keeps Everything Else From Cooking

Few parts get less attention than this one, but on the Kia Picanto, a neglected cooling system is behind the vast majority of avoidable serious engine failures. Noticing the early warning signs costs nothing and can save a genuinely large repair bill down the line.

Kia Picanto Radiator: Watch: Replacing It

🎬 Watch: Cara membuka radiator dan harganya.. / How to replace radiator kia picanto step by step (non-english)

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Indonesian; generation not stated.

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.

Kia Picanto Radiator: What It Does

On the Kia Picanto, coolant runs through the radiator to shed engine heat into the airflow, keeping temperatures in check. On many automatics, a separate internal circuit inside the same unit also cools the transmission fluid — one more reason a mismatched part number causes more than just a cooling problem.

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Kia Picanto 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 Kia Radiator

The same part, covered across other Kia models.