Coolant Hose. Porsche 971.1 / 971.2 Panamera 2.9L / 3.0L 2017>>  ❭  971121036H

Coolant Hose.
The Coolant Hose is a genuine Porsche OEM water inlet hose designed to transport engine coolant through the cooling system on Porsche Panamera (971) models. This hose ensures proper coolant circulation between key cooling components, helping maintain stable engine operating temperatures and efficient heat dissipation. Manufactured to Porsche specifications, it provides precise fitment, strong resistance to heat and pressure, and long-term durability.

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 2021-23Porsche 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  

Diagram Ref No 26

What This Product Does:

• Transfers engine coolant through the cooling circuit as a water inlet hose.
• Helps maintain proper coolant circulation, allowing heat to be carried away from the engine.
  
• Supports engine temperature regulation, ensuring efficient cooling performance and preventing overheating.
  
• Provides a flexible connection that absorbs vibration and thermal expansion without stressing rigid pipes or fittings.
  
  

Symptoms Of Wear Or Failure:

• Coolant may seep or drip from the hose body or around the clamp connections, often leaving wet residue or crusted deposits.
• A leaking hose can cause gradual coolant loss, requiring frequent top-ups.
• Loss of coolant or restricted flow can lead to overheating or unstable temperature readings.
• A noticeable sweet odor in the engine bay is a common sign of a coolant leak.
• Signs include cracks or splits, swelling or bulging, soft spots, hardened or brittle rubber, coolant staining along the hose.
  
• If coolant circulation is disrupted, cabin heating may become weak or inconsistent.
• Low coolant or overheating warnings may appear as the hose begins to fail.

Why Replacement Matters:

• Prevents coolant leaks that can cause low coolant levels and loss of system pressure.
  
• Helps avoid engine overheating, which can result in serious and costly engine damage.
  
• Restores proper coolant flow, ensuring efficient heat dissipation through the radiator and cooling system.
  
• Maintains reliable heater performance, since the heater system depends on steady coolant circulation.
  
• Protects surrounding components, as leaking coolant can damage sensors, wiring, seals, and nearby engine parts.

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Related, superseded, cross reference or alternative numbers for comparison.

971121036H

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