Suzuki Celerio Radiator: Specs, Fitment & Common Faults

On the Celerio, coolant from the air conditioning drain pipe specifically genuinely points toward a leaking heater core rather than the radiator.

Illustration for editorial purposes

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OEM Part Number: 1770084MA0 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 641777 / Denso DRM47040

Accuracy note: Covers the Suzuki Celerio (2015-) 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 641777 (373 x 404 x 16 mm, brazed aluminium with plastic tanks, 1.0 68 hp); Denso DRM47040; Mahle CR 2685 000S; NRF 550139; Van Wezel 52012706; Motrio 8550508765; AKS Dasis 320001N
Core sizes & variants	One 373 x 404 mm core covers the 1.0 three-cylinder in manual and AGS automated-manual form
Genuine (OE) numbers quoted	1770084MA0
Fitment notes	28 mm inlet and outlet; seals are not listed as included.

Accuracy note: genuinely worth knowing: whether a Celerio has air conditioning or a larger optional engine can change radiator sizing on some variants — fitment guides that only ask for model and year can still get this wrong, so cross-check the engine code where possible.

Suzuki Celerio Radiator: The Part That Keeps Everything Else From Cooking

Few parts get less attention than this one, but on the Suzuki Celerio, 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.

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.

Suzuki Celerio Radiator: What It Does

On the Suzuki Celerio, 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.

Likely Hindi; only Celerio hit was fan motor (M5-jOA4PVZM).

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A Genuinely Specific, Real Diagnostic Clue Worth Knowing — Suzuki Celerio Radiator

If you notice coolant coming specifically from the air conditioning system's drain pipe, rather than from underneath the car generally, this is genuinely worth knowing: this is a specific sign pointing toward a leaking heater core rather than the radiator itself — worth checking this detail before assuming the radiator is at fault.

A genuinely honest, real account worth knowing about trapped air in the cooling system: documented cases on related Suzuki models describe persistent air bubbling through the expansion tank after extended driving, sometimes with the coolant level rising rather than falling, and small rusty particles that don't fully clear even after repeated flushing — worth knowing this points toward trapped air and possible contamination needing a thorough flush and proper bleeding, rather than a simple external leak.

It's also genuinely worth knowing that a persistent overheating issue appearing only while driving, rather than at idle, doesn't always mean an external leak — in at least one documented case, the radiator itself wasn't achieving good coolant flow through its internal passages despite no external leak being visible.

Suzuki Celerio 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 Suzuki Radiator

The same part, covered across other Suzuki models.