Heating Hose. Porsche 971.1 / 971.2 / 976 Panamera 2017>>  ❭  9A781933400

Heating Hose.
The Heating Hose is a genuine Porsche OEM heater coolant hose designed to carry hot engine coolant through the HVAC heating circuit. This hose ensures proper coolant flow between heater system components, supporting consistent cabin heating and stable cooling system operation. Manufactured to Porsche specifications, it provides precise fitment, excellent resistance to heat and pressure, and long-term durability. Designed for Porsche Panamera (971 and 976) models, this heating hose helps maintain reliable heater performance and overall cooling system efficiency.

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 Turbo V8 4.0L 4WD (550 Hp) 2017-20
• Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
• Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 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 GTS 4.0L V8 2021-23
• Porsche 971.2 Panamera GTS Sport Turismo 4.0L V8 2021-23
• Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
• Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
• Porsche 976 Panamera V6 2.9L 2023>>
• Porsche 976 Panamera 4 V6 2.9L 2023>>
• Porsche 976 Panamera GTS V8 4.0L 2023>>

  
Diagram Ref No 3

What This Product Does:

• Transports hot engine coolant to and from heater system components such as the heater core or heater control valve.
• Enables the HVAC system to produce warm air for cabin heating.
  
• Maintains proper coolant circulation within the heater portion of the cooling system.
  
• Provides a flexible, heat-resistant connection that accommodates engine movement and thermal expansion.
  
  

Symptoms Of Wear Or Failure:

• Coolant may seep or drip from cracks in the hose or at the connection points, often leaving visible residue.
• A leaking heater hose can cause gradual coolant loss, requiring frequent topping up.
• If hot coolant cannot circulate properly through the heater core, the HVAC system may blow lukewarm or cold air.
• Coolant loss or restricted flow in the heater circuit can reduce overall cooling efficiency.
• A noticeable coolant odor in the engine bay or cabin can indicate a heater hose leak.
• Signs may include cracking or splitting, swelling or bulging, hardened or brittle rubber, coolant staining along the hose.
  
• Low coolant or temperature warnings may appear if leakage becomes significant.

Why Replacement Matters:

• Prevents coolant leaks that can lead to low coolant levels and loss of system pressure.
  
• Maintains consistent cabin heating, since the heater core depends on proper coolant flow.
  
• Helps prevent engine overheating, as coolant loss reduces overall cooling efficiency.
  
• Restores proper coolant circulation, ensuring stable engine operating temperatures.
  
• Protects surrounding components, because leaking coolant can damage sensors, wiring, and nearby engine parts.

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9A781933400

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