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Product Information
Product Information
Engine Water Coolant Reservoir.

This Engine Water Coolant Reservoir is a OE MATCH Porsche component designed to store and regulate coolant within the engine cooling system. Also known as an expansion tank, it allows coolant to expand and contract safely as temperatures fluctuate, helping to maintain consistent pressure and efficient engine cooling.

Fits:

  • Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
  • Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
  • Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
  • Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
  • Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
  • Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L  

Diagram Ref No 1

What This Product Does:
  • Stores excess coolant and returns it to the system when needed
  • Manages coolant expansion and contraction
  • Maintains correct system pressure for efficient cooling
  • Supports consistent 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 warning light or frequent need for top-ups
  • Engine overheating Coolant smell from the engine bay
  • Discoloured or brittle plastic due to age and 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 reliable coolant circulation
  • Avoids costly repairs caused by cooling system failure  



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Related, superseded, cross reference or alternative numbers for comparison.

98110604706
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98110614702
98110614703
98110614704

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