Please wait… 
Please wait while we process your order,
do not press the back button… 
Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram

Water / Coolant Radiators

Filter by brand
DISPLAYING 1 to 5 (of 5 products)
PAE121253A/2
Product Information
Product Information

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
9A712125310
PAE121253A

The product you are viewing cross references to these numbers
Special Order item
PAE121253A
Product Information
Product Information
Radiator for Water Coolant Fluid.
Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.

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

Diagram Ref No 1

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Related, superseded, cross reference or alternative numbers for comparison.

PAE121253A
9A712125310
550248
PAE121253A

The product you are viewing cross references to these numbers
PAE121253A/1
Product Information
Product Information
Radiator for Water Coolant Fluid.
Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.

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

Diagram Ref No 1

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Related, superseded, cross reference or alternative numbers for comparison.

PAE121253A
9A712125310
PAE121253A

The product you are viewing cross references to these numbers
Special Order item
PAE121203
Product Information
Product Information
Water radiator fan with cowling.



Fits:
Porsche 971.1 Panamera / Panamera S  2017-19
Porsche 971.2 Panamera / Panamera S 2019>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 16

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Related, superseded, cross reference or alternative numbers for comparison.

PAE121203
PAE121203
9A712120311
9A712120312

The product you are viewing cross references to these numbers
PAE121203/1
Product Information
Product Information
Water radiator fan with cowling.

Fits:
Porsche 971.1 Panamera / Panamera S  2017-19
Porsche 971.2 Panamera / Panamera S 2019>>

Diagram ref no 16

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

PAE121203
PAE121203
9A712120312
9A712120311

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
About Water / Coolant Radiators

Water Coolant Radiators – Efficient Cooling Performance for Porsche Engines

Water coolant radiators are the heart of your Porsche’s cooling system, responsible for maintaining the perfect balance between performance and engine temperature. These components dissipate heat from the coolant as it passes through the radiator core, ensuring your engine operates at peak efficiency while preventing overheating - whether you’re cruising through city streets or pushing hard on the track.

At Design911, we offer a comprehensive range of genuine and high-quality water coolant radiators for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and transaxle cars. Each radiator is precision-engineered to provide efficient heat exchange, corrosion resistance, and a perfect fit, ensuring long-lasting performance and reliability for every driving condition.

What Do Water Coolant Radiators Do?

Radiators are essential to your Porsche’s engine cooling system. Their primary functions include:

  • Transferring heat from the coolant to the surrounding air.
  • Regulating coolant temperature to prevent engine overheating.
  • Supporting overall thermal balance for performance and emissions efficiency.
  • Enhancing reliability by maintaining optimal operating temperatures in all climates.

By efficiently dissipating heat, radiators protect your engine, prevent premature wear, and maintain consistent performance under pressure.

Why Do Radiators Fail?

Despite being built for endurance, radiators experience constant thermal stress, exposure to pressure, and environmental elements that can lead to failure. Common causes include:

  • Corrosion or rust due to contaminated or old coolant.
  • Leaks from cracked tanks, damaged cores, or failing seals.
  • Blockages caused by debris or scale build-up inside coolant passages.
  • Physical damage from road debris or stone impacts.
  • Coolant contamination from oil or combustion residue.

Symptoms of radiator failure include overheating, coolant loss, visible leaks, or fluctuating temperature readings.

Why Replace a Faulty Radiator?

A damaged or inefficient radiator compromises your Porsche’s cooling system, risking overheating and potential engine damage. Replacing your radiator with a high-quality, manufacturer-standard unit ensures optimal cooling efficiency, reliability, and peace of mind.

Benefits of replacement include:
Restored cooling efficiency and heat dissipation.
Prevention of engine overheating and coolant loss.
Enhanced vehicle performance and fuel economy.
Durable, corrosion-resistant materials for long service life.

All radiators in our range are designed using premium aluminium cores, precision welds, and reinforced end tanks to ensure excellent cooling capacity, leak prevention, and long-term reliability — perfect for both standard and high-performance Porsche applications.

You may also like
Popular Models