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- Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
- Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
- 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 Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
Intercooler Lower Pressure Hoses
These intercooler lower pressure hoses are designed for the Porsche Cayenne 9YA turbo and Cayenne GTS models. They form a vital part of the turbocharged intake system by transferring compressed air from the intercooler into the engine intake system.
Fits:
- Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
- Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
- 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 Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
Diagram ref no 28 and 31
Turbocharged Porsche engines rely on efficient airflow and boost pressure control to deliver performance. These pressure pipes ensure that compressed air flows smoothly and efficiently through the system, helping maintain engine power and responsiveness.
What These Intercooler Pressure Pipes Do
The intercooler pressure pipes, also known as charge air pipes, carry compressed air from the turbocharger through the intercooler and into the engine.
They help:
• Maintain consistent boost pressure
• Deliver cooled, dense air to the engine for optimal combustion
• Support engine performance and throttle response
• Ensure efficient operation of the turbocharging system
Any restriction or leak in these pipes can significantly affect engine performance.
Why Intercooler Pressure Pipes Fail
Modern turbocharged engines operate under high pressure and temperature conditions. Over time, plastic charge pipes can degrade or fail.
Common causes include:
Heat and pressure stress
Repeated exposure to high boost pressure and temperature cycles can weaken
plastic components.
Cracking or splitting
Plastic pipes can develop cracks, especially at joints or connection points.
Boost leaks
Seals and connections may wear, leading to loss of pressure.
Material fatigue
Over time, plastic materials lose strength and flexibility.
Symptoms of Failing Intercooler Pipes
• Loss of engine power
• Reduced turbo boost pressure
• Hissing or air leak noises under acceleration
• Engine warning lights related to boost pressure
• Poor throttle response
• Increased fuel consumption
Replacing worn or damaged pressure pipes restores proper airflow and turbo efficiency.
Why You May Need to Replace These Pipes
Restore Turbo Performance
New pipes ensure correct boost pressure delivery and engine efficiency.
Fix Boost Leaks
Replacing cracked or leaking pipes eliminates air loss in the intake system.
Improve Engine Response
Proper airflow improves throttle response and acceleration.
Prevent Further Damage
Boost leaks can cause the turbo system to work harder, leading to additional
wear.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB14573
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
- Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16
or 
Hella ref no 6PP 009 400-471
Fits:
Porsche 991.1 2013-16
I011 - Special models GTS (991/981)
IX51 - For cars with Powerkit 250kW
Click 'Zoom in' for large parts diagram.
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
03G906051D
The product you are viewing cross references to these numbers