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Vent Breather Pipe. Porsche 957 Cayenne S / Cayenne GTS 4.8L ❭ 94810524504
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
The Vent Breather Pipe is a OE MATCH component designed for the engine’s crankcase ventilation (PCV) system. This breather pipe routes crankcase vapours and excess pressure from the engine to the air/oil separator or intake system, helping maintain proper internal engine pressure and emissions control. It ensures correct fitment, reliable sealing, and long-term durability on Porsche 957 Cayenne S / GTS 4.8L models.
Fits:
- Porsche 957 Cayenne S/GTS 4.8L 2007-10
Diagram Ref No 10 (Diagram Ref No 11 And 12 Included)
What This Product Does:
- Vents excess crankcase pressure created during engine operation.
- Routes blow-by gases and oil vapours to the PCV/air-oil separator system for proper ventilation.
- Helps reduce stress on engine seals and gaskets by preventing pressure build-up.
- Supports proper emissions control by returning vapours into the intake system rather than releasing them.
Symptoms Of Wear Or Failure:
- Cracks or splits in the breather pipe can cause a vacuum leak, leading to rough running or unstable idle.
- A leaking breather pipe can trigger engine management faults related to vacuum system leaks, PCV system performance, air/fuel mixture imbalance.
- If crankcase pressure is not vented correctly, it can push oil past seals and gaskets, causing leaks.
- Oil vapours escaping from a damaged breather pipe may cause an oily smell in the engine bay.
- Symptoms may include oil filler cap difficult to remove, whistling/hissing noises, pressure-related seal issues.
- Breather pipes often fail due to age and heat, showing hardened plastic/rubber, cracking, broken fittings or connectors.
- If ventilation is disrupted, oil vapour can be drawn into the intake incorrectly, contributing to oil burning.
Why Replacement Matters:
- Prevents vacuum leaks, which can cause rough idle, poor performance, and fault codes.
- Maintains proper crankcase ventilation, preventing pressure build-up inside the engine.
- Helps prevent oil leaks, since excessive crankcase pressure can force oil past seals and gaskets.
- Protects engine performance and efficiency, by keeping the air/fuel mixture stable and reducing unmetered air entering the system.
- Reduces risk of secondary damage, such as damaged seals, intake contamination, or long-term PCV system issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810524504
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- 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 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
This OE Match cooling water breather pipe is a direct replacement for the original Porsche coolant vent line fitted to selected Porsche 970 Panamera and 958 Cayenne V8 models. Installed within the engine cooling circuit, the breather pipe connects key coolant passages and allows trapped air and coolant vapour to be vented correctly through the system. Proper coolant venting is essential on high-performance Porsche V8 engines to prevent air pockets, maintain stable coolant flow, and support efficient engine temperature regulation.
Fits:
Porsche 970 Panamera 4.8L V8 2010-2016 S / GTS / TURBO
* engine codes: M48.20 / M48.40 / MCX.PA / MCX.RA / MCX.P / MCX.R / MCW.BA / MCW.CA / MCW.B / MCW.C
Porsche 958 Cayenne 4.8L V8 2011-2018 S / GTS / TURBO / TURBO S
* engine codes: M48.02 / M48.52 / MCF.TB / MCY.XA / MCF.T / MCY.X
Diagram ref no 11
The cooling water breather pipe vents and circulates coolant within the engine cooling system, helping eliminate trapped air and maintain correct coolant pressure and flow throughout the engine.
Function
• Vents trapped air from the cooling system
• Supports proper coolant circulation and pressure regulation
• Helps maintain stable engine operating temperature
• Reduces risk of air pockets within cooling system
• Protects against coolant leaks and overheating
Cooling system hoses and breather pipes are constantly exposed to heat, coolant pressure, and vibration. Over time, the material can harden, crack, or become porous, increasing the risk of coolant leaks and air entering the cooling system. Replacing ageing breather pipes helps maintain reliable cooling system operation and prevents potential engine overheating issues.
When to replace
• Visible coolant leaks or staining
• Cracked or brittle coolant hose material
• Cooling system pressure loss
• Overheating or fluctuating coolant temperatures
• During preventative cooling system maintenance
• During engine or coolant hose servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810602622
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- 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 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
90º coolant fitting at the alternator.
Includes O-ring; Premium Metal Construction
Fits:
Porsche 955 Cayenne S / Turbo 4.5L 2003-06
M 816 09867 >>
M 8260 4064 >>
Porsche 957 Cayenne 4.8L 2007-10
Porsche 958 Cayenne 4.8L 2010-18
Porsche 970 Panamera 4.8L 2010-16
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810646200PRM
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- 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 Diesel V6 3.0L (250Hp) 2014-16
- Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

Fits:
Porsche 958 Cayenne 3.6L 2011-18
Porsche 95B.1 Macan 3.0L / 3.6L 2014-18
Porsche 970.2 Panamera 3.0L 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94610602660
The product you are viewing cross references to these numbers
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