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- 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 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- 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 971.1 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 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD Executive 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 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 971.2 Panamera Turbo S E-Hybrid 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S E-Hybrid 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 4 E-Hybrid V6 2.9L 2023>>
- Porsche 976 Panamera 4S E-Hybrid V6 2.9L 2023>>
- Porsche 976 Panamera GTS V8 4.0L 2023>>
- Porsche 976 Panamera Turbo E-Hybrid V8 4.0L 2023>>
- Porsche 976 Panamera Turbo S E-Hybrid V8 4.0L 2023>>
Fits:
Porsche 971.1 Panamera MKI 2017>>2021
Cars With Option Codes:
8X0 - Without Headlamp Washer System
9M0 - Without Auxiliary Heater/Parking Heater
9M7 - High-Voltage Battery Heating
Porsche 971.2 Panamera MKII 2021>>2024
Cars With Option Codes:
9R0 - Without Night Vision
9M0 - Without Auxiliary Heater/Parking Heater
9M7 - High-Voltage Battery Heating
Porsche 976 Panamera 2024>>
Cars With Option Codes:
9R0 - Without Night Vision
7VQ - With Engine Preheating
9M0 - Without Auxiliary Heater/Parking Heater
9M7 - Electric Quick Heater
Diagram Ref No 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
971955453E
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Fits left or right - 2 required per car
Fits:
Porsche 955 Cayenne - 2003 to 2006
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95562818000
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Fits:
Porsche 955 Cayenne 2003-06 (not Turbo)
Left and right.
Please select below.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95562816
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
Coolant Expansion Tank (Water Tank Reservoir)
Keep your Porsche Cayenne's cooling system operating
efficiently with this OE Match Coolant Expansion Tank (Water Tank Reservoir).
Manufactured to the original factory specification, this
direct replacement provides the
correct fit, capacity and connection points for a straightforward installation.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
(D9J
Engines)
- Porsche 955 Cayenne S 4.5L V8 2003-06 (T90 / T91 Engines)
- Porsche 955 Cayenne Turbo 4.5L 2003-06 (T90 / T91 Engines)
- Porsche 955 Cayenne Turbo S 4.5L 2006>> (T90 / T91 Engines)
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
Diagram ref no. 1
The expansion tank is a vital part of the engine cooling system, storing coolant as it expands during normal engine operation and returning it to the cooling system as temperatures decrease. Replacing a worn or leaking reservoir helps maintain the correct coolant level, prevents overheating and protects the engine from costly damage.
What Does the Coolant Expansion Tank Do?
The coolant expansion tank performs several essential functions within the engine cooling system.
Its primary roles include:
- Providing a reservoir for expanding engine coolant.
- Maintaining the correct coolant level throughout the cooling system.
- Allowing coolant to return to the radiator and engine as temperatures fall.
- Helping maintain the correct system pressure when used with the pressure cap.
- Assisting with bleeding trapped air from the cooling system.
- Providing a convenient point for checking and topping up coolant.
A correctly functioning expansion tank is essential for maintaining stable engine operating temperatures.
Why Does the Expansion Tank Fail?
Expansion tanks are subjected to constant temperature fluctuations and system pressure, which can eventually weaken the plastic housing.
Common causes of failure include:
- Age-related plastic fatigue.
- Hairline cracks caused by repeated heating and cooling cycles.
- Coolant leaks around hose connections.
- Damage caused by excessive cooling system pressure.
- Discolouration and brittleness from prolonged engine bay heat.
- Internal contamination reducing coolant quality.
A leaking or cracked expansion tank can lead to coolant loss, low system pressure and engine overheating if left unrepaired.
When Should It Be Replaced?
Replacement is recommended when:
- Coolant leaks are visible around the tank.
- The reservoir has become cracked or distorted.
- The plastic has become brittle or heavily discoloured.
- Coolant level warnings occur without any obvious hose leaks.
- The cooling system is being overhauled.
- Replacing other ageing cooling system components during preventative maintenance.
Replacing the expansion tank before it fails can help prevent overheating and reduce the risk of expensive engine repairs.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510614723
The product you are viewing cross references to these numbers