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Mercedes-Benz · Cooling

Heater matrix (heater core)

A small radiator inside the dashboard that heats the cabin air using engine coolant.

Also called heater core, heater radiator.

How you know it is this

  • A damp or wet passenger footwell, often smelling sweet
  • Windows fogging with a greasy film that will not wipe clear
  • No heat from the vents with the engine at normal temperature
  • Coolant disappearing with nothing visible under the car

Worth knowing before you buy

  • The part is cheap and the job is not — on most cars the dashboard has to come out, which is a day or more of labour.
  • Because of that, it is worth being certain before ordering. A sweet smell with a damp carpet is the reliable sign.
  • Blockage rather than leakage is common where the coolant has been neglected. A flush sometimes restores heat without any part at all.
  • Do the heater hoses and the control valve while the system is open.

What we need to quote it. The chassis number — heater cores differ with climate control specification. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

RadiatorExpansion tank and capUpper and lower hosesThermostat and housingWater pumpAuxiliary pumpFan and clutchShroud and mountsHeater matrix and valveHeater hosesPipes and flangesTemperature sensorAuxiliary coolers
Cooling circuit — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the heating and auxiliary coolers

All cooling parts
Get in touch

Heater matrix (heater core) for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)