Water / Coolant Pumps

Thermostat Insert with Aluminium Housing and O-Rings

Restore correct engine temperature control with this OE Match Thermostat Insert. The thermostat regulates coolant flow between the engine and radiator. It helps the engine reach operating temperature quickly when cold and then maintains the correct temperature by controlling coolant circulation through the radiator.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
• Porsche 970.1 Panamera S V8 4.8L 2009-13
• Porsche 970.1 Panamera 4S V8 4.8L 2009-13
• Porsche 970.1 Panamera GTS V8 4.8L 2011-13
• Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
• Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
• Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
• Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
• Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
• Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
• Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
• Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

Diagram ref no 6

What Does the Thermostat Insert Do?

When the engine is cold, the thermostat remains closed to restrict coolant flow through the radiator, helping the engine warm up efficiently.

As coolant temperature rises, the thermostat opens and allows coolant to circulate through the radiator where excess heat can be removed.

A correctly operating thermostat helps:

• Maintain the correct engine temperature
• Allow faster engine warm-up
• Regulate coolant flow through the radiator
• Prevent excessive engine temperatures
• Support efficient engine operation
• Maintain consistent cooling system performance

Why Do Thermostats Fail?

Thermostats operate through thousands of heating and cooling cycles and can gradually deteriorate with age.

Common causes include:

• Internal mechanical wear
• Thermostat valve sticking
• Weakening of the temperature-sensitive element
• Coolant contamination or deposits
• Corrosion within the cooling system
• Overheating General age-related deterioration

A thermostat can fail either open or closed. A thermostat stuck open can cause the engine to run too cool, while one stuck closed can restrict coolant circulation and cause overheating.

When Should the Thermostat Be Replaced?

Replacement should be considered if:

• The engine takes unusually long to warm up
• Engine temperature remains below normal
• Engine temperature becomes too high
• Temperature readings fluctuate unexpectedly
• Cabin heater performance is poor
• Diagnostic testing indicates incorrect coolant temperature
• The thermostat is sticking or no longer opening correctly
• Cooling system repairs make replacement advisable

Thermostat replacement is also commonly considered during major cooling system maintenance, particularly on higher-mileage vehicles.

Important Cooling System Checks

Overheating or incorrect engine temperature is not always caused by the thermostat.

The coolant level, water pump, radiator, cooling fans, hoses and cooling system should also be inspected when diagnosing temperature problems.

Any coolant leaks should be repaired and the cooling system correctly filled and bled after thermostat replacement.

Porsche Cayenne, Macan & Panamera Thermostats

The thermostat is a key component of the Porsche engine cooling system, controlling coolant circulation according to engine temperature.

As Cayenne, Macan and Panamera models age, thermostats can become slow to operate or stick partially open or closed. Typical symptoms include slow engine warm-up, low operating temperature, fluctuating temperature readings or overheating.

When diagnosing Porsche cooling system problems, the thermostat should be checked alongside the water pump, radiator, coolant level and other cooling system components.

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94810603404

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Thermostat with Two O-Rings
The thermostat housing is located at the top of the engine above and behind the water pump.

Fits:
Porsche Cayenne S / GTS / Turbo 2011 - 2018
Porsche 95B Macan S / Turbo 2014 - 2018
Porsche 970 Panamera S / GTS / Turbo 2010 - 2016

Previous numbers:
94810603400, 94810603401, 94810603402, 94810603403

Diagram ref no 6

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94810603404

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Fits:
Porsche 958 Cayenne Hybrid 3.0L 2011 - 2018
Porsche 970 Panamera Hybrid 3.0L 2011 - 2016

Diagram ref no 24

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95860656700

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Fits:
Porsche 958 Cayenne Hybrid 3.0L 2011 - 2018
Porsche 970 Panamera Hybrid 3.0L 2011 - 2016

Diagram ref no 24

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95860656700

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Fits:
Porsche 957 Cayenne S / GTS / Turbo 2007-10
Porsche 958 Cayenne / S / GTS / Turbo 2011-18
Porsche 970 Panamera / S / GTS / Turbo 2010-16
Porsche 95B Macan S / Turbo 2014-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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94810653300

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Water pump gasket.



Fits:
Porsche 957 Cayenne S / GTS / Turbo 2007-10
Porsche 958 Cayenne / S / GTS / Turbo 2011-18
Porsche 970 Panamera / S / GTS / Turbo 2010-16
Porsche 95B Macan S / Turbo 2014-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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94810653300

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Fits:
Porsche 958 Cayenne 3.0L HYBRID 2012-18
Porsche 970 Panamera 3.0L HYBRID 2012-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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95810643100

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Fits:
Porsche 958 Cayenne 3.0L HYBRID 2012-18
Porsche 970 Panamera 3.0L HYBRID 2012-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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Fits:
Porsche 957 Cayenne S / GTS / TURBO 4.8L 2007-10
Porsche 958 Cayenne S / GTS / TURBO / TURBO S 4.8L 2011>>
Porsche 970 Panamera S / GTS / TURBO 2010-13
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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Water pump pulley.



Fits:
Porsche 957 Cayenne S / GTS / TURBO 4.8L 2007-10
Porsche 958 Cayenne S / GTS / TURBO / TURBO S 4.8L 2011>>
Porsche 970 Panamera S / GTS / TURBO 2010-13
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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Fits:
Porsche 957 Cayenne S / GTS / TURBO 2007-10
Porsche 958 Cayenne S / GTS / TURBO 2011-17
Porsche 970 Panamera S / GTS / TURBO 2010>>
Porsche Macan S / GTS / TURBO 2014>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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94810603301

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Fits:
Porsche 957 Cayenne S / GTS / TURBO 2007-10
Porsche 958 Cayenne S / GTS / TURBO 2011-18
Porsche 970 Panamera S / GTS / TURBO 2010-16
Porsche Macan S / GTS / TURBO 2014-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

Related reference numbers
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94810603301

The product you are viewing cross references to these numbers

Water Pump.
Maintain efficient engine cooling with this OE Match Water Pump, manufactured as a direct replacement. Produced to OE-style specifications, this water pump is designed to circulate coolant throughout the engine and cooling system, helping to regulate operating temperatures and protect the engine from overheating under all driving conditions.

Fits:

• Porsche 957 Cayenne S / GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
• Porsche 970.1 Panamera S V8 4.8L 2009-13
• Porsche 970.1 Panamera 4S V8 4.8L 2009-13
• Porsche 970.1 Panamera GTS V8 4.8L 2011-13
• Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
• Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
• 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
• Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 Executive 2014-16
• Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 1

The water pump is a critical component of the cooling system, continuously driven whenever the engine is running. Over time, the internal bearings, shaft seal, and impeller can wear due to heat, coolant exposure, and high mileage. This can lead to coolant leaks, reduced coolant circulation, bearing noise, or complete pump failure. Replacing a worn water pump helps restore cooling system efficiency and provides reliable engine temperature control. This OE Match component is ideal for routine maintenance, cooling system repairs, engine overhauls, and Porsche restoration projects.  

What This Product Does:

• Circulates coolant throughout the engine and radiator.
• Maintains correct engine operating temperature.
• Helps prevent engine overheating.
• Supports efficient heat transfer from the engine.
• Replaces worn or leaking original water pumps.
• Restores reliable cooling system performance.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Coolant leaking from the water pump.
• Bearing noise or whining from the pump.
• Engine running hotter than normal.
• Overheating under load or in traffic.
• Excessive play in the water pump pulley.
• Visible corrosion or coolant staining around the pump.
• Poor coolant circulation.
• Age-related deterioration of the original component.

Why Replacement Matters:

• The water pump is responsible for maintaining continuous coolant circulation through the engine and radiator, ensuring heat is efficiently removed from the engine. A worn or failing water pump can lead to coolant leaks, reduced circulation, engine overheating, and potentially severe engine damage if left unresolved.
• Replacing the water pump restores reliable coolant flow, helping maintain correct operating temperatures and protecting the engine from unnecessary wear and overheating. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match water pump provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, cooling system repairs, engine rebuilds, and restoration projects.

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94810603301

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Replacement water pump with gasket.

Fits:
Porsche 957 Cayenne S / GTS / TURBO 2007-10
Porsche 958 Cayenne S / GTS / TURBO 2011-17
Porsche 970 Panamera S / GTS / TURBO 2010>>
Porsche Macan S / GTS / TURBO 2014>>

Diagram ref no 1

NOTE: Water Pump COMES WITH MOUNTING GASKET.

Related reference numbers
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94810603301

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Water pump with gasket.



Fits:
Porsche 958 Cayenne 3.0L HYBRID 2011-18
Porsche 970 Panamera HYBRID 2012-16

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PAC121018A

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Water pump with gasket.



Fits:
Porsche 958 Cayenne 3.0L DIESEL 2012-18
Porsche 970 Panamera 3.0L DIESEL 2012-16 (model: CRCC 184kW / CRCB 155kW)
Porsche 95B Macan 3.0L S 2014>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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