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Mercedes-Benz · Electric Drive

Coolant expansion tank and lines

The header tanks and pipework for the EV's separate cooling circuits.

How you know it is this

  • A low coolant warning
  • Coolant on the ground
  • A cracked or brittle tank
  • Air in a circuit causing a thermal fault

Worth knowing before you buy

  • AN EV USUALLY HAS MORE THAN ONE COOLANT CIRCUIT, at different temperatures, and they are not interchangeable. Topping up the wrong one is a real mistake.
  • The battery circuit uses a specific low-conductivity coolant. Ordinary coolant in it is a safety problem.
  • Plastic tanks go brittle in this heat exactly as they do on a combustion car.
  • Bleeding these circuits properly needs a diagnostic tool to run the pumps.

What we need to quote it. The chassis number, and which circuit. 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.

Electric coolant pumpsExpansion tanks and linesChiller / heat exchangerHeat pump and valvesHV cabin heater
EV thermal management — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the thermal management

All electric drive parts
Get in touch

Coolant expansion tank and lines 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)