Engine Coolant Breather Line. Porsche 9YA / 9YA.2 Cayenne 4.0L 2018>>  ❭  PAB12108100

Engine Coolant Breather Line.

The Engine Coolant Breather Line is a genuine Porsche cooling system component designed to vent trapped air and regulate pressure within the engine’s coolant circuit. This breather hose ensures efficient coolant circulation by preventing air pockets that can reduce cooling performance and cause temperature instability.

Fits:

• Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
• Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
• Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
• Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
• Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
• Porsche 9YA.2 Cayenne S V8 4.0L Petrol (474Hp) 2023>>
• Porsche 9YA.2 Cayenne S Coupe V8 4.0L (474Hp) 2023>>

  
Diagram Ref No 11

What This Product Does:

• Allowing trapped air and vapour to vent from the coolant circuit
• Preventing airlocks that reduce cooling efficiency
• Maintaining correct cooling system pressure
• Supporting steady coolant flow
• Helping regulate engine operating temperature

Symptoms Of Wear Or Failure:

• Coolant leaks near 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 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Related, superseded, cross reference or alternative numbers for comparison.

PAB12108100

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