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Porsche // Cayenne 9YA (E3) 2018-2023 // 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
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- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
The OE Match Radiator Water Fan is a replacement right-hand electric cooling fan for selected Porsche 987 Boxster, Cayman and 997 models.
Fits:- Porsche 987 Boxster 2005>>
- Porsche 987C Cayman 2005>>
- Porsche 997 2005-08
Diagram Ref No 2
Mounted at the front of the vehicle behind the right-hand coolant radiator, the fan draws air through the radiator whenever natural airflow created by vehicle movement is insufficient.
This is particularly important when the vehicle is:
Idling.
Moving slowly.
Sitting in traffic.
Operating in hot weather.
Running the air-conditioning system.
Recovering from sustained high-load driving.
Porsche's water-cooled engines depend on continuous circulation of coolant through the front-mounted radiators. At normal road speed, forward movement provides substantial airflow through the radiator cores. When road speed falls, however, the electric cooling fans must provide the airflow needed to remove heat from the coolant.
A worn or failed right-hand fan can therefore allow engine temperature to rise during low-speed driving even though the cooling system may appear normal at higher speeds.
Replacing a defective fan helps restore correct airflow through the right-hand radiator and supports stable engine temperature, air-conditioning performance and overall cooling-system reliability.
What This Product Does:
The right-hand radiator fan moves ambient air through the right-side coolant radiator.
Its main functions are to:
- Draw cooling air through the radiator.
- Maintain coolant temperature at low road speeds.
- Provide cooling while the vehicle is stationary.
- Supplement natural airflow.
- Help prevent overheating in traffic.
- Support the cooling system during hot-weather operation.
- Assist cooling when air-conditioning demand is high.
- Work together with the opposite-side cooling fan.
- Maintain reliable engine cooling under changing operating conditions.
Symptoms Of Wear Or Failure:
Possible symptoms include:
- Engine temperature rising in slow traffic.
- Temperature normal at speed but increasing at idle.
- Right-hand fan not operating.
- One cooling fan running while the other remains stationary.
- Intermittent fan operation.
- Fan running slowly.
- Grinding or rumbling noises.
- Squealing.
- Excessive vibration.
- Fan blades wobbling.
- Fan stopping after becoming hot.
- Electrical burning smell.
- Blown fuse.
- Overheated electrical connector.
- Air-conditioning performance becoming poor while stationary.
- Engine overheating during low-speed driving.
Why Replacement Matters:
Replacing a worn or failed Radiator Water Fan helps restore:
- Correct radiator airflow.
- Stable coolant temperature.
- Reliable low-speed cooling.
- Balanced left/right radiator airflow.
- Reduced overheating risk.
- Correct cooling performance in traffic.
- Proper electrical fan operation.
- Reliable air-conditioning heat-exchanger airflow.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99762412802
The product you are viewing cross references to these numbers
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
- Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
- Porsche 9YA.2 Cayenne E-Hybrid V6 3.0L (470Hp) 2023>>
- Porsche 9YA.2 Cayenne E-Hybrid Coupe V6 3.0L (470Hp) 2023>>
- Porsche 9YA.2 Cayenne S E-Hybrid V6 3.0L (519Hp) 2023>>
- Porsche 9YA.2 Cayenne S E-Hybrid Coupe V6 3.0L (519Hp) 2023>>
- Porsche 9YA.2 Cayenne GTS V8 4.0L Bi-Turbo Petrol 2023>>
- Porsche 9YA.2 Cayenne GTS Coupe V8 4.0L Bi-Turbo 2023>>
The Porsche Genuine OE Additional Center Coolant Radiator (PAB145804) is a specific auxiliary cooling component designed to manage excess heat in hybrid-assisted Cayenne 9YA models. It enhances the ability of the cooling system to regulate coolant temperature during heavy engine load or hybrid system operation - contributing to efficient engine performance and longevity through improved thermal management.
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
This additional center coolant radiator functions as a supplementary heat exchanger in the engine’s cooling system. It helps dissipate excess heat from the engine coolant, reducing overall operating temperature and relieving load on the primary radiator - particularly under higher thermal loads seen in hybrid-assisted or high-performance operation. By improving coolant temperature control, it supports optimal combustion efficiency, long-term durability, and consistent engine performance.
Applications
• Cooling system repair: Replace a damaged or failed auxiliary radiator component
• Performance reliability: Add or restore cooling capacity to support hybrid engine thermal loads
• Factory-standard restoration: Use when rebuilding or fully servicing cooling circuits
• Preventative maintenance: Install as part of coolant system servicing for consistent temperature control
Fitment / Position on Car
• Installed on: Engine bay, mounted centrally as part of the coolant heat-exchange system
• Location: Integrated with front cooling network alongside main radiator cores and intercoolers
• Connection: Works within the standard coolant piping and hose routing for the Cayenne 9YA hybrid platform
Modern performance and hybrid engines, such as those found in the Cayenne 9YA, generate additional heat due to electric motor assist, turbocharging, and high output demands. An auxiliary radiator increases total cooling surface area, helping prevent overheating, reduce thermal stress on primary components, and maintain consistent performance both in everyday driving and demanding conditions. Choosing a genuine Porsche OE cooling radiator means getting the exact specification, durability, and fitment that Porsche engineers designed for your vehicle’s thermal system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB145804
The product you are viewing cross references to these numbers
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
- Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
- Porsche 9YA.2 Cayenne E-Hybrid V6 3.0L (470Hp) 2023>>
- Porsche 9YA.2 Cayenne E-Hybrid Coupe V6 3.0L (470Hp) 2023>>
- Porsche 9YA.2 Cayenne S E-Hybrid V6 3.0L (519Hp) 2023>>
- Porsche 9YA.2 Cayenne S E-Hybrid Coupe V6 3.0L (519Hp) 2023>>
- Porsche 9YA.2 Cayenne GTS V8 4.0L Bi-Turbo Petrol 2023>>
- Porsche 9YA.2 Cayenne GTS Coupe V8 4.0L Bi-Turbo 2023>>
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
Related, superseded, cross reference or alternative numbers for comparison.
PAB145804
The product you are viewing cross references to these numbers