Radiator Coolant Breather Line. Porsche 9YA Cayenne S 2.9L 2018-23  ❭  PAB12108120

Radiator Coolant Breather Line.

The Radiator Coolant Breather Line is a OE MATCH cooling system component designed to vent trapped air from the radiator circuit and maintain proper cooling system pressure. This breather hose allows air and vapour to escape safely, ensuring efficient coolant circulation and consistent engine temperature control.

Fits:

• Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
• Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23

  
Diagram Ref No 13

What This Product Does:

• Allowing trapped air to vent from the radiator circuit
• Preventing airlocks that reduce cooling performance
• Maintaining stable cooling system pressure
• Supporting steady coolant circulation
• Helping regulate engine operating temperature

Symptoms Of Wear Or Failure:

• Coolant leaks near the radiator or hose connections
• Cracked, brittle, or split hose material
• Coolant smell from the engine bay
• Low coolant warning light
• Difficulty bleeding the cooling system
• Fluctuating or rising engine temperature
• Coolant residue around hose fittings

Why Replacement Matters:

• Maintain correct cooling system pressure
• Prevent airlocks and circulation issues
• Protect the engine from overheating damage
• Restore reliable coolant flow
• Avoid costly repairs caused by cooling system failure

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB12108120

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