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Thermostat / Temperature Sensor

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DISPLAYING 1 to 16 (of 22 products)
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Special Order item
7PP906270
Product Information
Product Information
Change-over valve for water cooling and air intake. 

porsche

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 981 Boxster / Cayman - 2012 to 2016
Porsche 718 Boxster / Cayman - 2017 Onwards
Porsche 993 - 1994 to 1997 
Porsche 996 - 1997 to 2005 
Porsche 970 Panamera - 2009 to 2016
Porsche 958 Cayenne - 2010 to 2017

 

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7PP906270
7PP906270
99660512301

The product you are viewing cross references to these numbers
7PP906270/1
Product Information
Product Information
Change-over valve for water cooling and air intake. 

oematch

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 981 Boxster / Cayman - 2012 to 2016
Porsche 718 Boxster / Cayman - 2017 Onwards
Porsche 993 - 1994 to 1997 
Porsche 996 - 1997 to 2005 
Porsche 970 Panamera - 2009 to 2016
Porsche 958 Cayenne - 2010 to 2017

 

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Related, superseded, cross reference or alternative numbers for comparison.

7PP906270
7PP906270
99660512301

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Special Order item
99610674110
Product Information
Product Information
Coolant return water hose.

porsche

Fits:
Porsche 996 C4 3.4L 1998-01 MANUAL

This product supersedes Porsche's old part numbers:
- 99610674104
- 99610674106

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

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Related, superseded, cross reference or alternative numbers for comparison.

99610674110
99610674110
1614300100
99610674106

The product you are viewing cross references to these numbers
99610674110/1
Product Information
Product Information
Coolant return water hose.

oematch

Fits:
Porsche 996 C4 3.4L 1998-01 MANUAL

This product supersedes Porsche's old part numbers:
- 99610674104
- 99610674106

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

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Related, superseded, cross reference or alternative numbers for comparison.

99610674110
99610674110
99610674106
99610674104

The product you are viewing cross references to these numbers
Special Order item
99610674111
Product Information
Product Information
Coolant return water hose.

Fits:
Porsche 996 C4 3.4L 1998-01 TIPTRONIC

This product supersedes Porsche's old part numbers:
- 99610674107

Diagram ref no 3

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

99610674111
99610674107
99610674111

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Special Order item
99610674006
Product Information
Product Information
Coolant supply water hose.
This Porsche Genuine OE Coolant Supply Water Hose is an original-equipment cooling system hose designed specifically for the Porsche 911 (996) Carrera 4 with the 3.4 L engine. Manufactured to Porsche’s factory specifications, this hose provides the exact fit, material quality, and durability required to maintain reliable coolant circulation within the engine cooling system.

Fits:
Porsche 996 C4 3.4L 1998 - 2001

Diagram ref no 1

This genuine Porsche hose replaces earlier part numbers 99610674003 and 99610674004, ensuring compatibility with the original cooling system design used in early 996 Carrera 4 models.

The coolant supply water hose carries engine coolant between key cooling system components, helping transport hot coolant from the engine to the radiator or distribution pipes where heat is dissipated. By maintaining steady coolant flow, it helps regulate engine temperature and prevents overheating.

A correctly functioning coolant hose ensures the cooling system maintains proper pressure and flow, allowing the engine to operate within its designed temperature range even under high load or spirited driving conditions.

Functions & Technical Role
  Coolant transfer: Moves coolant between the engine and the main cooling supply pipes
  Temperature regulation: Supports the cooling system in maintaining optimal engine operating temperature
  Pressure resistance: Designed to withstand high coolant pressure and temperature cycles
  Durable construction: Manufactured from heat- and ozone-resistant rubber compounds for long service life
  OEM precision fit: Exact hose shape and connections to match Porsche’s original cooling layout

Fitment / Position on Car
  Installed on: Engine cooling system
  Location: Between the rear coolant supply pipe and the main distribution pipe / radiator supply line
  Function: Forms part of the primary coolant circulation circuit between engine and cooling components.

Coolant hoses are exposed to constant heat, pressure, and vibration. Over time they can harden, crack, or leak, which may lead to coolant loss and potential engine overheating. Replacing worn hoses with genuine Porsche OE parts ensures the correct material quality, fitment, and durability required to maintain the performance and reliability of the Porsche cooling system.

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

99610674006
99610674003
99610674004
99610674006

The product you are viewing cross references to these numbers
99610674006/1
Product Information
Product Information
Coolant supply water hose.
This OE Match coolant supply water hose is a direct-fit replacement hose designed for the Porsche 996 Carrera 4 (1998–2001) with the 3.4L engine. Manufactured to match the original Porsche part in shape, material and durability, this hose ensures reliable coolant flow within the engine’s cooling system.

Fits:
Porsche 996 C4 3.4L 1998 - 2001

Diagram ref no 1

This product supersedes Porsche's old part numbers:  99610674003, 99610674004

This coolant supply hose forms part of the engine cooling system in the Porsche 996. It connects key cooling system components and allows coolant to circulate between the engine and cooling circuit, helping maintain the correct operating temperature.

The OE Match hose replicates the original hose design with the correct bends, diameter and reinforced rubber construction to ensure proper fitment and long-term reliability.

The hose carries coolant through the engine cooling circuit, allowing the radiator and thermostat system to regulate engine temperature. Proper coolant circulation prevents overheating and ensures the engine operates within its designed temperature range.

Replacing old or deteriorated hoses helps maintain efficient cooling system performance and prevents coolant leaks that could lead to engine damage.

Function
• Coolant Circulation: Transfers coolant through the engine cooling system
  Temperature Regulation: Supports stable engine operating temperature
  Leak Prevention: Reinforced rubber construction ensures secure coolant flow

Coolant hoses are exposed to heat, pressure and coolant chemicals over time, which can cause the rubber to harden, crack or weaken. A failing hose may lead to coolant leaks or sudden rupture, potentially resulting in engine overheating. Replacing ageing hoses ensures reliable coolant circulation and protects the engine from temperature-related damage.

Consider replacing the coolant hose if you notice:
   Coolant leaks around hose connections
   Cracked or brittle rubber hose material
   Swelling or soft spots in the hose
   During cooling system servicing or preventative maintenance

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

99610674006
99610674003
99610674004
99610674006

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Special Order item
99660615002
Product Information
Product Information
Oil level sender.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 MKI 2005-08

Click 'Zoom in for large parts diagram.
Diagram ref no 26.

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99660615002
99660615000
99660615001
99660615002
99970220650

The product you are viewing cross references to these numbers
99660615002/1
Product Information
Product Information
Oil level sender. Measures both oil level and temperature.

oematch

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 MKI 2005-08

Click 'Zoom in for large parts diagram.
Diagram ref no 26.

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99660615002
99660615000
99660615001

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Special Order item
99610632651
Product Information
Product Information
Thermostat housing gasket.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 C2 / C4 / C2S / C4S 2005-08

Click 'Zoom in' for large parts diagram.
Diagram Ref No 7.

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

99610632651
99610632650
184.980
184.981
99610632651

The product you are viewing cross references to these numbers
99610632651/1
Product Information
Product Information
Thermostat housing gasket.

elring

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 C2 / C4 / C2S / C4S 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 7.

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

99610632651
99610632650
184.980
184.981
99610632651

The product you are viewing cross references to these numbers
99610632651/2
Product Information
Product Information
Thermostat housing gasket.

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster - 2005 to 2008
Porsche 987C Cayman - 2005 to 2008
Porsche 996 C2 / C4 / C4S - 1998 to 2005
Porsche 997 C2 / C4 / C2S / C4S - 2005 to 2008

Diagram ref no 7

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

99610632651
99610632650
99610632651

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Special Order item
99610601361
Product Information
Product Information
Water thermostat with thermostat insert.

porsche

Gasket not included. Please add separately. Part number 99610601359.

Fits:
Porsche 986 Boxster 1997-2004
Porsche 996 C2 / C4
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2006-08
Porsche 997 Carrera / S 2005-08 (Coupe / Cabrio)

This product supersedes Porsche's old part numbers:
- 99610612153, 99610612155,

Click 'Zoom in' for large parts diagram.
Diagram Ref No 5.

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

99610601361
99610612153
99610612155
99610601359
996.106.013.59
99610601359
99610601361
99610601360

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Special Order item
99610650256
Product Information
Product Information
Water Hose that fits to the Water Pump part number 99610612155.

porsche

Fits:
Porsche 996 C2 / C4 / C4S 1998-05

This product supersedes Porsche's old part numbers:
- 99610650253
- 99610650254

Click 'Zoom in' to see the diagram.
Diagram ref no 24.

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

99610650256
99610650253
99610550254
99610550256

The product you are viewing cross references to these numbers
99610650256/1
Product Information
Product Information
Water hose that fits to the water pump part number 99610612155.

oematch

Fits:
Porsche 996 C2 / C4 / C4S 1998-05

This product supersedes Porsche's old part numbers:
- 99610650253
- 99610650254

Click 'Zoom in' to see the diagram.
Diagram ref no 24.

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

99610650256
99610650253
99610550254
99610550256

The product you are viewing cross references to these numbers
Special Order item
99660640501
Product Information
Product Information
Water temperature sensor.

porsche

Fits:
Porsche 986 Boxster 2.5L 1997-99
Porsche 996 >>2001

Click 'Zoom in' for large parts diagram.
Diagram Ref No 29.
DISPLAYING 1 to 16 (of 22 products)
1 2
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About Thermostat / Temperature Sensor

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.

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