Additional center coolant radiator. Porsche 9YA Cayenne 3.0L / 4.0L Hybrid 2018>>  ❭  PAB145804

Additional center coolant radiator
This radiator is designed for direct-fit installation using existing mounting points and coolant hoses, without modification. It is ideal for replacement during cooling system servicing, radiator upgrades, or when a worn or damaged unit is affecting system performance.

Fits:
Porsche 9YA (E3) Cayenne 3.0L  / 4.0L Hybrid  2018 - 2024
Porsche 9YA.2 (E3 PA) Cayenne 3.0L Hybrid 2023 >>

Diagram ref no 1

The additional centre coolant radiator increases the total heat rejection capacity of the cooling system. By providing supplementary heat dissipation ahead of or in conjunction with the main radiator, it helps:
• Maintain consistent operating temperatures under heavy load or high ambient heat
•  Improve thermal stability for engine and hybrid components
•  Reduce strain on the primary radiator and cooling fans
•  Support extended performance driving or high-duty cycles

An inefficient or failing additional radiator can reduce the cooling system’s ability to control engine temperature, leading to overheating, reduced performance, and increased stress on the main radiator. On hybrid models, inadequate thermal management can also impact electrified components. Replacing a compromised unit with an OE Match radiator restores correct cooling capacity and helps maintain performance, reliability, and long-term engine health.

When to replace:
•  Visible damage, bent fins, or leaks
•  Coolant stains or corrosion on the radiator cores
•  Overheating or rising temperature gauges
•  After front-end impact/collision damage
•  During complete cooling system overhaul

Related reference numbers
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PAB145804

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