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Porsche > Cayenne 92A (958) 2010-2017 > 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17 > Engine Rebuild Parts > Turbo Chargers / Intercoolers & Parts >

Turbocharger Shut-Off Valve. Porsche 971.1 / 971.2 Panamera / 9YA / 9YA.2 Cayenne 2017>>  ❭  PAB145710

Turbocharger Shut-Off Valve. Porsche 971.1 / 971.2 Panamera / 9YA / 9YA.2 Cayenne 2017>> - PAB145710
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PAB145710
Product Information
Product Information
Turbocharger Shut-Off Valve.
The Genuine Porsche Turbocharger Shut-Off Valve is an original equipment forced induction component designed to regulate boost pressure within the turbocharging system of compatible Porsche models. Manufactured to Porsche's exact specifications for fit, performance and durability, this precision-engineered valve relieves excess boost pressure during throttle lift-off, preventing compressor surge and ensuring smooth turbocharger operation, improved throttle response and long-term turbocharger reliability.  
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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.2 Cayenne S V8 4.0L Petrol (474Hp) 2023>>
  • Porsche 9YA.2 Cayenne S Coupe V8 4.0L (474Hp) 2023>>
  • Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
  • Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
  • Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
  • Porsche 971.2 Panamera GTS 4.0L V8 2021-23
  • Porsche 971.2 Panamera GTS Sport Turismo 4.0L V8 2021-23
  • Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
  • Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23 
 
Diagram Ref No 7

Manufactured from high-quality automotive-grade composite materials with a durable diaphragm or piston assembly (application dependent), precision-engineered internal components and high-temperature-resistant seals, the shut-off valve is designed to withstand high boost pressures, engine bay temperatures, vibration and continual operating cycles. Designed as a direct replacement for the original component, it integrates seamlessly with the turbocharger, intake system and engine management system, delivering factory-correct performance and dependable operation.  

What This Product Does:
  • Releases excess boost pressure when the throttle closes.
  • Prevents compressor surge within the turbocharger.
  • Protects the turbocharger from unnecessary stress.
  • Improves throttle response during gear changes.
  • Maintains smooth turbocharger operation.
  • Supports efficient engine performance and drivability.
  • Restores factory boost pressure control.
  • Forms an essential part of the turbocharging and intake system.

Symptoms Of Wear Or Failure:
  • Loss of turbo boost pressure.
  • Reduced engine performance.
  • Sluggish acceleration.
  • Fluttering or chattering noises from the turbocharger during throttle lift-off.
  • Hissing noises caused by boost leaks.
  • Illuminated engine management or check engine warning light.
  • Engine management fault codes relating to boost pressure.
  • Poor throttle response.
  • Increased fuel consumption.
  • Inconsistent turbocharger performance.

Why Replacement Matters:

  • The turbocharger shut-off valve operates every time the throttle is released while the turbocharger is producing boost pressure. It is continually exposed to high boost pressures, rapid pressure fluctuations, elevated temperatures and constant engine vibration. Over time, the internal diaphragm, piston, spring or seals can wear, crack or lose their ability to seal correctly.
  • A faulty shut-off valve can cause boost leaks, compressor surge and inconsistent turbocharger performance, resulting in reduced engine power, slower throttle response and increased stress on the turbocharger. Continued operation with a defective valve may accelerate wear of the turbocharger and reduce overall engine efficiency.
  • Replacing a worn or faulty valve with a Genuine Porsche component restores precise boost pressure regulation and protects the turbocharging system from unnecessary wear. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Turbocharger Shut-Off Valve provides factory-correct fitment, exceptional durability and long-lasting reliability, ensuring the performance, efficiency and driving experience expected from your Porsche.



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PAB145710
PAB145710

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Fits:
Porsche 996 Turbo / GT2 2001-05
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Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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Front radiator intercooler. Porsche 957 Cayenne Turbo 4.8L / 958 Cayenne Turbo 4.8L - 95511063901, 95511064001, 7L5145804B, 7L5145804C, 7L5145804D, 95511064000, 95511064002, 7L5145803B, 7L5145803C, 7L5145803D, 95511063900, 95511063902 - 177003N, PR4057, RA8430020, 74004057, 96276, 351319201780, 735005, 735006, DIT28011, 105067, 177002N, 30782, 30781, 105066, 351319201770, 74004056, 96178, DIT28010, PR4056, RA8430010, 735005O
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Front radiator intercooler. Porsche 957 Cayenne Turbo 4.8L / 958 Cayenne Turbo 4.8L
9551106
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Front radiator intercooler
This OE Match intercooler is a direct replacement for Porsche part, manufactured to original specifications, it ensures precise fitment and reliable performance within the turbocharged intake system. Installed at the front of the vehicle, the intercooler cools compressed air from the turbochargers before it enters the engine. By reducing intake air temperature, it improves combustion efficiency and supports optimal engine performance.

Fits:
Porsche 957 Cayenne Turbo 4.8L 2007 - 2010
Porsche 958 Cayenne Turbo 4.8L 2011 - 2018

Diagram ref no 1 (left) and 2 (right)

The intercooler lowers the temperature of compressed air from the turbochargers, increasing air density and improving engine efficiency. This results in better power output, improved throttle response, and enhanced reliability.

A properly functioning intercooler is essential for maintaining consistent turbo performance and preventing heat-related power loss.

Function
•  Cools compressed intake air from turbochargers
•  Improves combustion efficiency and engine performance
•  Maintains stable intake air temperatures
•  Supports consistent boost pressure and power delivery

This component is critical for performance and engine protection in turbocharged vehicles.

Over time, intercoolers can become clogged, corroded, or develop internal leaks, reducing their cooling efficiency. This can lead to higher intake temperatures, reduced performance, and increased engine stress.

Replacing a worn intercooler restores proper cooling, improves engine efficiency, and ensures reliable turbocharged performance.

When to replace:
•   Loss of power or reduced turbo efficiency
•   Boost leaks or hissing noises
•   Oil contamination inside intercooler
•   Visible external damage or corrosion
•   Fault codes related to intake temperature or boost pressure

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9551106
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Turbo charger. Porsche 957 Cayenne Turbo 4.8L Cylinder 1-4.
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Fits:
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