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Porsche > Engine Cooling > Coolant Bottles / Expansion Tanks >

Coolant Expansion Tank. Porsche 982 Boxster / Cayman 2017>>  ❭  982121407C

Coolant Expansion Tank. Porsche 982 Boxster / Cayman 2017>> - 982121407C, 982121407B
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982121407C
Product Information
Product Information
Coolant Expansion Tank.

The Coolant Expansion Tank is a genuine OEM Porsche component designed to regulate coolant levels and maintain optimal pressure within the engine cooling system. Fitted within the cooling circuit, this expansion tank allows coolant to expand and contract safely as temperatures fluctuate, ensuring consistent engine temperature control.

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Diagram Ref No 1

What This Product Does:

  • Manages coolant expansion and contraction during temperature changes
  • Maintains correct cooling system pressure
  • Stores excess coolant and returns it when required
  • Supports efficient engine temperature regulation
  • Prevents overheating by stabilising the cooling system  

Symptoms Of Wear Or Failure:
  • Coolant leaks or visible cracks in the tank
  • Low coolant warnings or frequent top-ups
  • Engine overheating Coolant smell from the engine bay
  • Discoloured, brittle, or warped plastic due to heat exposure
  • Loss of system pressure, reducing cooling efficiency  

Why Replacement Matters:
  • Prevents coolant loss and overheating
  • Maintains proper cooling system pressure
  • Protects the engine from heat-related damage
  • Ensures consistent coolant circulation
  • Avoids costly repairs caused by cooling system failure  



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

982121407C
982121407C
982121407B

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