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- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Fits:
Porsche 964 Turbo 1991-94
Porsche 993 Turbo 1995-98
Porsche 996 Turbo / GT2 2001-05
Porsche 944 Turbo 1985-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 25
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99311033751
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- Porsche 957 Cayenne 3.0L Diesel 2007-10
Fits:
Porsche Cayenne (955) 3.0 TDI 02/09-09/10
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PAB145873B
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Fits:
Porsche Cayenne (92A) 3.0 TDI 06/2010 - 05/2011
Porsche Cayenne (9PA) 3.0 TDI 02/2009 - 09/2010
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PAB145873B
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Diesel Turbocharger Actuator
This turbocharger actuator is designed for the Porsche
Cayenne 3.0ltr diesel engine fitted to the 957 and 958 generation models. The
actuator plays a critical role in controlling turbo boost pressure by
regulating the turbocharger’s variable geometry system.
Fits:
Porsche 957 Cayenne 3.0L Diesel 2007-10
Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Fits to diagram ref no 5 Diagram ref no 1
Modern turbo diesel engines rely on precise boost control to deliver efficient performance, strong torque and optimal fuel economy. A failing turbo actuator can significantly affect engine performance and trigger warning lights or limp mode.
What the Turbocharger Actuator Does
The turbo actuator controls the position of the turbocharger vanes or wastegate mechanism. It adjusts the amount of exhaust gas flowing through the turbocharger to regulate boost pressure.
This allows the engine to:
• Deliver strong acceleration and torque
• Maintain efficient combustion and fuel economy
• Prevent excessive boost pressure that could damage engine components
• Provide smooth power delivery across the rev range
The actuator communicates with the engine control unit to constantly adjust turbo boost depending on engine load and driving conditions.
Why Turbo Actuators Fail
Turbo actuators operate in extremely harsh conditions near the turbocharger where high heat and constant movement are present. Over time this can cause internal components to wear or fail.
Common causes of failure include:
Electrical motor or sensor failure
The actuator contains electronic components that can fail due to heat exposure.
Carbon buildup in the turbo mechanism
Soot deposits can restrict the movement of turbo vanes, causing excessive
strain on the actuator.
Internal gear wear
Mechanical wear inside the actuator can cause inaccurate positioning of the
turbo vanes.
Heat damage
Prolonged exposure to turbocharger heat can degrade actuator components.
Symptoms of a Faulty Turbo Actuator
• Loss of engine power or poor acceleration
• Turbo boost errors or warning lights
• Engine entering limp mode
• Inconsistent turbo performance
• Fault codes relating to boost pressure control
• Increased fuel consumption
Replacing a faulty turbo actuator restores proper boost regulation and helps return the engine to its intended performance levels.
Why You May Need to Replace the Turbo Actuator
Restore Turbo Performance
A new actuator allows the turbocharger to operate correctly and deliver the
expected engine power.
Prevent Engine Management Faults
Replacing a failing actuator can resolve boost control fault codes and warning
lights.
Improve Fuel Efficiency
Proper turbo boost control helps the engine run efficiently and maintain
optimal fuel consumption.
Avoid Further Turbocharger Damage
A malfunctioning actuator can place strain on the turbocharger mechanism if
left unresolved.
Related reference numbers
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PAB145873B
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
The OE Match Radiator Intercooler is a high-quality replacement charge air cooling component designed for turbocharged Porsche applications. Engineered to OE specifications for fit, performance and durability, this intercooler reduces the temperature of compressed air generated by the turbocharger before it enters the engine, helping to maximise power output, combustion efficiency and overall engine reliability.
Fits:
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Diagram Ref No 1 (LEFT) And 2 (RIGHT)
Featuring a precision-manufactured cooling core and durable end tank construction, the intercooler efficiently dissipates heat from the charge air system. By delivering cooler, denser intake air to the engine, it helps maintain consistent boost performance and supports the responsive driving characteristics expected from a Porsche vehicle.
What This Product Does:
- Cools compressed air from the turbocharger before it enters the engine.
- Increases intake air density for improved combustion efficiency.
- Supports optimum engine power and torque output.
- Helps maintain consistent boost pressure performance.
- Reduces intake air temperatures during demanding driving conditions.
- Improves turbocharger system efficiency.
- Enhances throttle response and engine reliability.
- Contributes to overall engine thermal management.
Symptoms Of Wear Or Failure:
- Reduced engine power and acceleration.
- Loss of turbocharger boost pressure.
- Sluggish throttle response.
- Increased fuel consumption.
- Hissing noises caused by boost leaks.
- Excessive black exhaust smoke under acceleration.
- Engine management warning lights.
- Oil residue around intercooler pipe connections.
- Visible corrosion, impact damage or cracking of the intercooler core.
- Fault codes relating to intake air pressure or boost system performance.
Why Replacement Matters:
- Intercoolers operate under demanding conditions and are continuously exposed to high-pressure intake air, temperature fluctuations, moisture, road debris and environmental contamination. Over time, the cooling core may become damaged, corroded or develop leaks that reduce cooling efficiency and compromise boost pressure retention.
- A failing intercooler can allow compressed air to escape, reducing engine performance and forcing the turbocharger to work harder to achieve target boost levels. Higher intake air temperatures can negatively affect combustion efficiency, fuel economy and engine longevity. Continued operation with a damaged intercooler may place additional strain on the turbocharger and associated intake system components.
- Replacing a worn or damaged intercooler restores efficient charge air cooling, maintains boost pressure integrity and helps preserve engine performance. An OE Match replacement provides factory-style fitment, effective heat dissipation and long-term durability, ensuring your Porsche continues to deliver optimum power, efficiency and reliability.
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95814580
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