Honda Jazz Radiator: Specs, Fitment & Common Faults

On the Jazz, using the wrong coolant type can genuinely cause corrosion — plus a tricky DIY trap where the heater pipe can feel seated when it isn't.

Illustration for editorial purposes

Find Honda Jazz Radiator Here!

Opens live listings in a new tab.

OEM Part Number: 190105R0901 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Denso DRM40046 / NRF 550092

Accuracy note: Covers the Honda Jazz (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)	Denso DRM40046; NRF 550092; Hella 8MK 366 309-991; JDEUS M-0130140; Kale 363755.
Core sizes & variants	It is a thin 16 mm core, typical of Honda's small-car cooling packs.
Genuine (OE) numbers quoted	190105R0901
Fitment notes	Both connections are 28 mm; no seals are listed, so re-use or renew the hose clips and check the lower mounting rubbers.

Accuracy note: genuinely worth knowing: higher-power Jazz engine variants often use a larger, higher-capacity radiator than the entry-level engine in the same range — matching by engine code rather than just model name avoids under-specifying the cooling capacity.

A Genuinely Important Warning Worth Knowing About Coolant Type — Honda Jazz Radiator

If you're topping up or refilling the cooling system, this is genuinely worth taking seriously: using the wrong type of coolant — genuinely the wrong chemical formulation for your specific engine — has been documented as a real, direct cause of internal corrosion. Always confirm the correct coolant specification for your specific engine before topping up.

A genuinely specific, tricky DIY installation trap worth knowing about the thermostat housing: the heater pipe that connects into the housing has a small amount of natural play, and can feel seated when it genuinely isn't pushed in fully. One documented case saw a leak develop specifically at this junction after reassembly, traced to the pipe not being seated all the way in.

It's also worth knowing that a combination of elevated idle speed and rapid overheating shortly after thermostat work often points toward trapped air in the cooling system rather than a genuine new leak.

Honda Jazz Radiator: The Part That Keeps Everything Else From Cooking

Nothing about this component is glamorous, but on the Honda Jazz, 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.

Honda Jazz Radiator: Watch: Replacing It

🎬 Watch: Honda Jazz MK2 - Radiator replacement tips (older gen)

Watch on YouTube ↗

GE Jazz 2008-15; nothing GK-specific beyond a flush video

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.

Honda Jazz Radiator: What It Does

The Honda Jazz'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.

Find Honda Jazz Radiator Here!

Opens live listings in a new tab.

Honda Jazz 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 Honda Radiator

The same part, covered across other Honda models.