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- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Intercooler to Cut-Off Valve Pressure Hoses
These intercooler to cut-off valve pressure
hoses are designed for the Porsche 991.2 GT2 RS and form an essential part of
the charge air system. They connect the intercooler to the cut-off (diverter)
valve, ensuring controlled airflow and pressure regulation within the turbo
system.
Fits:
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Diagram ref no 5 and 6
In a high-performance twin-turbo engine, managing boost pressure is critical. These hoses allow pressurised air to be routed correctly between components, supporting both performance and system protection.
What These Pressure Hoses Do
These hoses link the intercooler to the cut-off valve, which regulates excess boost pressure when the throttle closes.
They help:
• Maintain stable and controlled boost
pressure
• Allow excess pressure to be safely redirected via the cut-off valve
• Ensure smooth throttle transitions and turbo response
• Support efficient airflow within the charge air system
• Protect turbochargers from pressure surges
A properly functioning hose ensures the turbo system operates smoothly and efficiently.
Why Intercooler to Cut-Off Valve Hoses Fail
Due to their position within the turbo system, these hoses are exposed to high pressure, heat and constant airflow.
Common causes include:
Heat and pressure cycling
Repeated expansion and contraction weakens hose material.
Cracking or splitting
Rubber or reinforced sections can degrade over time.
Boost pressure stress
High boost levels place additional strain on hose walls.
Seal and connection wear
Clamps and joints may deteriorate, leading to leaks.
Symptoms of Failing Pressure Hoses
• Boost leaks or inconsistent turbo pressure
• Hissing noise during acceleration or gear changes
• Reduced engine performance
• Poor throttle response
• Engine warning lights related to boost control
• Increased turbo lag
Replacing worn hoses restores proper boost regulation and system efficiency.
Why You May Need to Replace These Hoses
Restore Boost Control
Ensures the cut-off valve operates correctly under all conditions.
Eliminate Boost Leaks
Prevents pressure loss within the charge air system.
Improve Throttle Response
Supports smooth transitions during acceleration and gear changes.
Protect Turbo Components
Prevents pressure spikes that can damage turbochargers.
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99111023
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.jpg?width=197 "Fillister head screw 3,5 x 12. Porsche 987 Boxster / 970 Panamera - 99991923901")
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
Fits:
Porsche 987.1 Boxster - 2005 to 2008
Porsche 987.2 Boxster - 2009 to 2012
Porsche 970.1 / 970.2 Panamera turbo - 2009 to 2016
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99991923901
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- Porsche 970.1 Panamera S V8 4.8L 2009-13
- Porsche 970.1 Panamera 4S V8 4.8L 2009-13
- Porsche 970.1 Panamera GTS V8 4.8L 2011-13
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
- Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
Sold each.
Fits:
Porsche 970.1 Panamera 4.8L 2010-13
Porsche 970.2 Panamera 4.8L 2013-16
Porsche 970.2 Panamera 3.0L 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 14
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- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
Fits:
Porsche 970 Panamera Turbo 4.8L 2010 - 2016
Engine code: 4870 / CWBA / CWB / CWC
Diagram ref no 11 (left) or 12 (right)
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97011017
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- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
Fits:
Porsche 970 Panamera Turbo 4.8L 2010 - 2016
Engine code: 4870 / CWBA / CWB / CWC
Diagram ref no 11 (left) or 12 (right)
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