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- 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
The Breather Line is a genuine Porsche OEM coolant vent hose designed to connect the coolant expansion tank to the engine cooling system. This breather/vent line allows the cooling system to manage air and pressure changes while routing overflow coolant back into the closed-loop circuit. By supporting proper ventilation and fluid balance, it helps maintain stable engine operating temperatures and reliable cooling performance. Manufactured to Porsche specifications, it ensures precise fitment, durability, and resistance to heat and coolant exposure for Porsche Panamera (970) models.
Fits:
- 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
Diagram Ref No 11
What This Product Does:
- Vents trapped air and pressure from the cooling circuit into the expansion tank.
- Routes overflow coolant back to the coolant reservoir as temperatures rise.
- Helps maintain proper coolant level and pressure balance in the closed-loop cooling system.
- Supports stable coolant circulation, helping prevent air pockets that can reduce cooling efficiency.
- Cracks or loose connections can cause coolant seepage, staining, or dripping around the reservoir and hose joints.
- A leaking breather line can slowly reduce coolant level, requiring frequent top-ups.
- If the hose cannot vent properly, the system may build excess pressure or struggle to regulate pressure during heat cycles.
- Low coolant warnings may appear if coolant loss occurs through the breather line.
- A coolant smell in the engine bay often indicates leakage from the hose.
- Common signs include cracking or splitting, hardened/brittle rubber, swollen hose sections, degraded fittings or connectors, coolant residue buildup.
- Air entering the system or coolant loss may cause poor circulation, leading to unstable temperature readings.
Why Replacement Matters:
- Prevents coolant leaks that lead to low coolant levels and reduced cooling performance.
- Maintains proper venting, allowing the cooling system to release trapped air and manage pressure changes.
- Helps avoid overheating, since coolant loss or air pockets can disrupt coolant circulation.
- Protects cooling system components, as pressure imbalance can stress hoses, seals, and the expansion tank.
- Restores reliable cooling system operation, ensuring overflow coolant is routed correctly back to the reservoir.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97010631061
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