Coolant Radiator. Porsche 971.1 Panamera / Panamera 4 / Panamera 4 Executive 3.0L 2017-21  ❭  PAE121253A

OE Match coolant radiator.

Fits

Porsche 971.1 Panamera 3.0L 2017 - 2021
* with 'Standard' equipment (option code: A8C)
* without alternative drive system (option code: 0K0)

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

Heated coolant passes through the radiator, where its heat is released into the surrounding airflow. The cooled fluid then circulates back through the engine. Cooling fans assist airflow when needed, while the radiator forms part of the system that controls operating temperature.

Functions

• Releases heat carried by circulating coolant.
• Helps control engine operating temperature.
• Returns cooled fluid to the engine cooling circuit.
  
  

Technical Details

• Product type: engine coolant radiator / coolant cooler.
• Brand: OE Match.
• Supplied reference numbers: 9A712125310 and PAE121253A.
• Application requirements: equipment code A8C and drive-system code 0K0.
  
  

Symptoms of Fault

• Temperature climbing during demanding driving or warm weather.
• Falling coolant level, damp radiator surfaces or puddles beneath the vehicle.
• Sweet odour or dried deposits near radiator seams.
• Discoloured coolant containing corrosion residue or debris.
• Dashboard warning indicating excessive engine temperature.
• Weak cabin heating when coolant is low or circulation is impaired.
• Steam beneath the bonnet associated with escaping or boiling coolant.
• Damaged fins, visible corrosion or gurgling following shutdown.
  
  

Why Replacement Matters

Leaks and restricted coolant passages can reduce the radiator's ability to remove heat. Prolonged overheating may damage cylinder heads and gaskets, affect engine oil and lead to further repairs. Renewing a radiator with confirmed damage addresses the faulty component rather than repeatedly topping up lost coolant.

Inspect nearby hoses, joints, seals and mounting hardware during the repair. Similar symptoms can arise elsewhere in the cooling circuit, so establish the source before replacing parts.

FAQs

How can a radiator leak be distinguished from a hose leak?
Look for moisture or deposits on the radiator core and seams, then inspect hose connections. A cooling-system pressure test can help locate the source.

Can overheating occur without a visible leak?
Yes. Deposits inside coolant passages can restrict circulation without producing external seepage. Fan operation and thermostat behaviour also need checking.

What else should be inspected during replacement?
Check the pressure cap, thermostat, hoses and connections. Renew supporting components where inspection identifies deterioration rather than assuming every item needs replacement.

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

PAE121253A

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