Thermostat / Temperature Sensor
Complete Water Pump Kit – Water Pump, Thermostat, Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water pump, thermostat, drive (serpentine) belt and the required gaskets for both the pump and thermostat housing.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.
The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.
What This Complete Water Pump Kit Does
This cooling system service kit:
- Replaces the water pump to restore proper coolant flow
- Includes a new thermostat for accurate temperature control
- Supplies a fresh serpentine belt to ensure reliable accessory drive operation
- Comes with all required gaskets to prevent leaks during installation
- Improves cooling efficiency, reducing the risk of overheating
- Ensures long-term reliability with coordinated component replacement
- Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.
Why Water Pumps, Thermostats & Belts Fail
Common failure points include:
- Bearing wear inside the water pump, causing leaks or noise
- Impeller degradation, reducing coolant flow
- Thermostat sticking, leading to overheating or overcooling
- Serpentine belt cracking, glazing or stretching
- Coolant contamination, accelerating component wear
- Heat cycling, which weakens gaskets and housings
Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.
Why These Components Should Be Replaced Together
Replacing the pump, thermostat and serpentine belt as a set ensures:
- Restored cooling performance across the entire system
- Correct belt tension and accessory drive function
- Reduced labour costs by avoiding repeat disassembly
- Balanced longevity, as all components age similarly
- Prevention of leaks, thanks to new gaskets and seals
- Peace of mind for daily driving, long trips or track use
This kit offers the most reliable and cost-effective approach to cooling system maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPUMP.955.2.GEB
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
Complete Water Pump Kit – Water Pump, Thermostat, Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water pump, thermostat, drive (serpentine) belt and the required gaskets for both the pump and thermostat housing.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.
The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.
What This Complete Water Pump Kit Does
This cooling system service kit:
- Replaces the water pump to restore proper coolant flow
- Includes a new thermostat for accurate temperature control
- Supplies a fresh serpentine belt to ensure reliable accessory drive operation
- Comes with all required gaskets to prevent leaks during installation
- Improves cooling efficiency, reducing the risk of overheating
- Ensures long-term reliability with coordinated component replacement
- Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.
Why Water Pumps, Thermostats & Belts Fail
Common failure points include:
- Bearing wear inside the water pump, causing leaks or noise
- Impeller degradation, reducing coolant flow
- Thermostat sticking, leading to overheating or overcooling
- Serpentine belt cracking, glazing or stretching
- Coolant contamination, accelerating component wear
- Heat cycling, which weakens gaskets and housings
Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.
Why These Components Should Be Replaced Together
Replacing the pump, thermostat and serpentine belt as a set ensures:
- Restored cooling performance across the entire system
- Correct belt tension and accessory drive function
- Reduced labour costs by avoiding repeat disassembly
- Balanced longevity, as all components age similarly
- Prevention of leaks, thanks to new gaskets and seals
- Peace of mind for daily driving, long trips or track use
This kit offers the most reliable and cost-effective approach to cooling system maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPUMP.955.2.OEM
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
(*on Porsche 996 Turbo there is also an additional of same the sensor used for Oil temperature)
Fits:
Porsche 986 Boxster 2.7L & 3.2L - for Coolant temperature
Porsche 996 Carrera 3.6L - for Coolant temperature
Porsche 996 Turbo - for Coolant & Oil temperature*
Porsche 996 GT3 - for Coolant temperature
Porsche 997 2005-08 -for Coolant temperature
Porsche 997 GT3 - for Coolant temperature
Porsche 955 Cayenne S & Turbo - Coolant temperature
Diagram Ref No 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660641000
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- 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>>
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(*on Porsche 996 Turbo there is also an additional of same the sensor used for Oil temperature)
Fits:Porsche 986 Boxster 2.7L, 3.2L - for Coolant temperature
Porsche 996 Carrera 3.6L - for Coolant temperature
Porsche 996 Turbo - for Coolant & Oil temperature*
Porsche 996 GT3 - for Coolant temperature
Porsche 997 2005-08 -for Coolant temperature
Porsche 997 GT3 - for Coolant temperature
Porsche 955 Cayenne S & Turbo - Coolant temperature
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660641000
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- 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>>
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne S 4.5L 2003-06
Porsche 955 Cayenne TURBO 4.5L 2003-06
Click 'Zoom in' for large parts diagram.
Diagram ref no. 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94860620301
The product you are viewing cross references to these numbers
- 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>>
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne S 4.5L 2003-06
Porsche 955 Cayenne TURBO 4.5L 2003-06
Click 'Zoom in' for large parts diagram.
Diagram ref no. 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94860620301
The product you are viewing cross references to these numbers
- 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>>
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne S 4.5L 2003-06
Porsche 955 Cayenne TURBO 4.5L 2003-06
Click 'Zoom in' for large parts diagram.
Diagram ref no. 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94860620301
The product you are viewing cross references to these numbers
- 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>>
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12 Month Warranty
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Sold each - 2 required per car
Fits:
Porsche 955 Cayenne 3.2ltr - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
N10458302
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
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12 Month Warranty
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Sold each
Fits:
Porsche 955 Cayenne 3.2ltr - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
- Porsche 955 Cayenne 3.2L V6 2003-06
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12 Month Warranty
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Fits:
Porsche 955 Cayenne 3.2L 2004-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510612501
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
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12 Month Warranty
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included seal.
Fits:
Porsche 955 Cayenne 3.2L 2004-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510612501
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne 3.2ltr - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510611100
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
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12 Month Warranty
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Fits:
Porsche 955 Cayenne S 4.5L V8
Porsche 955 Cayenne Turbo 4.5L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810612303
The product you are viewing cross references to these numbers
- 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>>
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12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne S 4.5L V8
Porsche 955 Cayenne Turbo 4.5L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810612303
The product you are viewing cross references to these numbers
- 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>>
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne S 4.5L V8 2003-06
Porsche 955 Cayenne Turbo 4.5L 2003-06
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810640101
The product you are viewing cross references to these numbers
- 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>>
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 955 Cayenne 3.2L 2004-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
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95510611900
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
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-
Oil filter / Console / heat exchanger - M48.00 / M48.50 - 955 Cayenne 2003-06 104-10
-
Water pump / thermostat housing - M48.00 / M48.50 - 955 Cayenne 105-00
-
Water pump / thermostat housing - M02.2Y - 955 Cayenne 2004>> 105-02
-
Water cooling 1 - M48.00 / M48.50 - 955 Cayenne 2003-06 105-05
-
Intake manifold / Throttle body - M02.2Y - 955 Cayenne 2004>> 107-02
-
Lining / Underbody / Heat protection Cayenne 9PA (955) 2003-06 801-70
Engine Thermostats & Temperature Sensors – Precision Cooling Control for Porsche Performance
Engine thermostats and temperature sensors are essential components in your Porsche’s cooling system. Together, they regulate and monitor engine temperature to ensure optimal performance, efficiency, and reliability. The thermostat controls coolant flow through the radiator, while the temperature sensor communicates vital data to the vehicle’s ECU - helping to maintain the perfect balance between power and protection.
At Design911, we supply a wide range of genuine and high-quality thermostats and temperature sensors for Porsche models including transaxle cars, 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each part is engineered to precise standards for seamless integration, fast response, and long-lasting accuracy - ensuring your Porsche performs at its peak in all conditions.
What Do Engine Thermostats & Temperature Sensors Do?
These components work hand-in-hand to manage and monitor
your Porsche’s engine temperature:
- Thermostat:
Opens and closes to regulate coolant flow between the engine and radiator.
- Temperature
Sensor: Measures coolant or cylinder head temperature and sends data
to the ECU to control fans, fuel mixture, and performance parameters.
- Together: They maintain optimal operating temperatures, prevent overheating, and ensure efficient combustion and emissions control.
Without a properly functioning thermostat or temperature sensor, your engine can overheat, run inefficiently, or suffer from poor fuel economy.
Why Do Thermostats & Temperature Sensors Fail?
These components operate under constant thermal stress and
can degrade over time. Common causes of failure include:
- Thermostat
sticking open or closed due to corrosion or wear.
- Sensor
degradation from prolonged exposure to coolant and heat.
- Electrical
faults or corrosion in wiring and connectors.
- Contamination
from old or incorrect coolant types.
- Age-related fatigue causing inaccurate readings or slow response.
Symptoms of failure include fluctuating engine temperatures, warning lights, poor heating performance, or inconsistent fuel economy.
Why Replace Faulty Thermostats & Temperature Sensors?
A malfunctioning thermostat or temperature sensor can severely impact cooling efficiency and engine safety. Replacing worn or faulty parts restores accurate temperature control and helps prevent costly engine damage.
Benefits of replacement include:
- Stable engine operating temperature.
- Improved performance and fuel efficiency.
- Prevention of overheating or over-cooling.
- Manufacturer-quality construction for accuracy and durability.
All thermostats and sensors in this range are built to meet or exceed exacting standards, offering precise calibration, corrosion-resistant materials, and reliable long-term operation.
