Cooling water breather pipe for Porsche 970 Panamera / Cayenne 958 4.8L V8  ❭  94810602622

Cooling water breather pipe
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

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