Breather Line, Reservoir. Porsche 971.1 / 971.2 / 976 Panamera 2017>>  ❭  9A712244710

Breather Line, Reservoir. 
Maintain proper engine and cooling system ventilation with the Breather Line, Reservoir. This component is designed to route air and vapor from the reservoir system, helping regulate pressure and support smooth, efficient operation.

Fits:

• Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
• Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
• Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
• Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
• Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
• Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
• Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
• Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
• Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
• Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
• Porsche 971.2 Panamera 2.9L V6 2021-23
• Porsche 971.2 Panamera 4 2.9L V6 2021-23
• Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
• Porsche 971.2 Panamera 4S 2.9L V6 2021-23
• Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
• Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
• Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
• Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
• Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
• Porsche 976 Panamera V6 2.9L 2023>>
• Porsche 976 Panamera 4 V6 2.9L 2023>>
• Porsche 976 Panamera 4 E-Hybrid V6 2.9L 2023>>
• Porsche 976 Panamera 4S E-Hybrid V6 2.9L 2023>>  

Diagram Ref No 9

What This Product Does:

• Releases trapped air and pressure from the reservoir system
• Helps prevent pressure buildup that can stress hoses and seals
  
• Supports proper coolant reservoir operation during heating/cooling cycles
• Maintains stable cooling system performance

Symptoms Of Wear Or Failure:

• Coolant or vapor leaks near the reservoir area
  
• Sweet coolant smell from the engine bay
  
• Cracked, brittle, or collapsed hose material
• Loose or damaged hose connections
• Coolant residue buildup around fittings or clamps
  
• Pressure buildup in the cooling system (may cause swelling hoses)
  
• Coolant loss over time without obvious major leaks
  
• Check engine light (in some cases, if pressure/venting issues affect sensors)
  
  

Why Replacement Matters:

• The reservoir breather line plays a key role in allowing the cooling system to safely vent air and vapor as temperatures rise and fall. If this line becomes cracked, brittle, or blocked, it can lead to improper pressure regulation within the system.
• Failure to replace a worn breather line may result in coolant leaks, pressure buildup, stressed hoses or seals, and reduced cooling system efficiency. Over time, this can contribute to overheating or additional component damage.
• Replacing the breather line helps maintain proper system ventilation, prevents unnecessary strain on cooling components, and supports long-term engine reliability.

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9A712244710

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