Thermostat / Temperature Sensor

O-ring (29 x 3.5 mm) – seals the connection between the thermostat housing and the three-way plastic coolant connector that houses the temperature sensor.

Fits:
Porsche 957 Cayenne 3.6L V6 2007-10
Porsche 958 Cayenne 3.6L V6 2011-18

Diagram ref. 14.



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WHT000862

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O-ring thermostat housing 34,5x4x6.



Fits:
Porsche 957 Cayenne 3.6ltr V6 - 2007 to 2010
Porsche 958 Cayenne 3.6ltr V6 - 2010 to 2017

Click 'Zoom in' for large parts diagram.
Diagram ref no 9


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WHT005190

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Thermostat Housing Seal Ring for Porsche 958 Cayenne 3.6L – Essential Cooling System Sealing Component

This thermostat housing seal ring is designed specifically for the Porsche 958 Cayenne 3.6-litre engine, providing a critical seal between the thermostat and its housing. Its role is to maintain system pressure and prevent coolant leaks, ensuring the engine operates within its correct temperature range under all driving conditions.

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol 300Hp 2010-17

Diagram ref no 11

Even though it is a small component, the thermostat housing seal ring plays a major role in cooling system reliability. Over time, heat cycling, coolant exposure and age can cause the seal to harden, flatten or crack—leading to coolant leaks, pressure loss and potential overheating. Replacing the seal during thermostat service or cooling system repairs is essential preventative maintenance.

What the Thermostat Housing Seal Ring Does

This sealing ring:

• Creates a watertight seal between the thermostat and housing
  
• Maintains correct cooling system pressure
• Prevents coolant leaks during engine operation
  
• Supports accurate thermostat function
• Ensures stable engine temperature regulation

A properly sealing thermostat housing is vital for efficient cooling performance.

Why Thermostat Housing Seal Rings Fail

Common causes of failure include:

• Heat cycling, causing the seal to harden or lose elasticity
  
• Coolant chemical exposure, degrading the sealing material
  
• Compression set, where the seal flattens over time
  
• Improper installation, leading to pinching or distortion
  
• Age-related material fatigue, especially on higher-mileage vehicles

Symptoms often include coolant residue around the housing, low coolant warnings or unexplained coolant loss.

Why the Seal Ring Should Be Replaced

Replacing the thermostat housing seal ring provides:

• Restored leak-free cooling system operation
• Correct pressure retention for efficient coolant flow
  
• Prevention of overheating and engine stress
• Reliable sealing after thermostat replacement
• Low-cost protection against expensive cooling repairs

It is strongly recommended to replace the seal ring whenever the thermostat is removed or serviced.

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WHT000863

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Sealing ring coolant connection. 



Fits:
Porsche 957 Cayenne 3.6ltr V6 - 2007 to 2010
Porsche 958 Cayenne 3.6ltr V6 - 2010 to 2017

Click 'Zoom in' for large parts diagram.
Diagram ref no 23


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95510651100

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Thermostat Cover.

The Thermostat Cover is a OE MATCH cooling system component designed to securely house and seal the thermostat within the engine’s cooling circuit. This cover protects the thermostat assembly while ensuring a leak-free connection between the thermostat housing and connected coolant hoses.

Fits:

• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17

Diagram Ref No 13

What This Product Does:

• Securing and sealing the thermostat assembly
• Maintaining correct coolant routing through the thermostat housing
• Ensuring proper cooling system pressure
• Preventing coolant leaks at the thermostat connection
• Supporting stable engine temperature regulation

Symptoms Of Wear Or Failure:

• Coolant leaks near the thermostat housing
• Visible cracks or damage to the cover
• Coolant smell from the engine bay
• Low coolant warning light
• Engine overheating due to coolant loss
• Coolant residue around housing connections

Why Replacement Matters:

• Prevent coolant leaks and system pressure loss
• Maintain proper thermostat operation
• Protect the engine from overheating damage
• Restore reliable cooling system performance
• Avoid costly engine repairs caused by heat-related issues

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95510613100

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Thermostat cover. 



Fits:
Porsche 957 Cayenne 3.6ltr V6 - 2007 to 2010
Porsche 958 Cayenne 3.6ltr V6 - 2010 to 2017

Click 'Zoom in' for large parts diagram.
Diagram ref no 13


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95510613100

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Aluminium Upgraded Thermostat Housing 

Upgrade your Porsche 958 Cayenne 3.6 cooling system with this high-performance aluminium thermostat housing, designed to replace the failure-prone OE plastic housing.

The original plastic housing is known to become brittle over time due to repeated heat cycles, often leading to cracks, warping, or failure—resulting in coolant leaks and potential engine overheating.

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17       

Diagram ref no 8  

This upgraded version is manufactured from aircraft-quality aluminium, offering superior strength, durability, and resistance to heat-related degradation. The robust alloy construction prevents flange warping and cracking, ensuring long-term reliability and improved cooling system performance.

Engineered for precise fitment and easy installation, this is a direct replacement upgrade designed for enthusiasts and professionals seeking a permanent solution to a common failure point.

Key Features

• Aluminium upgraded thermostat housing
• Designed for Porsche 958 Cayenne 3.6 litre
• Replaces OE plastic housing (95810606000)
• Aircraft-quality alloy construction
• Resistant to heat cycling, warping, and cracking
• Eliminates common coolant leak issues
• Direct replacement – OEM fitment
• Ideal for preventative maintenance and upgrades
• Long-term durability and reliability

Function and Purpose

This upgraded housing improves cooling system reliability.

It helps to:
• Maintain consistent coolant flow
• Prevent coolant leaks caused by plastic failure
• Support thermostat function
• Ensure stable engine operating temperature
• Enhance overall cooling system durability

Why Upgrade from Plastic to Aluminium

The factory plastic housing is a known weak point.

Common issues include:
• Cracking due to heat cycles
• Warping of sealing surfaces
• Coolant leaks
• Premature failure
• Risk of engine overheating

Upgrading to aluminium provides a permanent solution with improved strength and heat resistance.

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95810606000

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Thermostat Housing

High-quality thermostat housing designed specifically for the Porsche 958 Cayenne 3.6ltr engine. This component plays a critical role in regulating engine temperature by housing the thermostat and directing coolant flow through the cooling system.

The thermostat housing ensures efficient coolant circulation, helping the engine reach and maintain optimal operating temperature. Proper function is essential for engine performance, fuel efficiency, and long-term reliability.

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17       

Diagram ref no 8  

Manufactured to OEM specifications, this housing provides precise fitment, durability, and dependable performance—ideal for maintenance, repair, or replacement of worn or damaged cooling system components.

Key Features

• Thermostat housing – part number 95810606000
• Designed for Porsche 958 Cayenne 3.6ltr
• Houses and supports thermostat operation
• Ensures correct coolant flow and circulation
• Maintains optimal engine temperature
• OEM-quality fit and construction
• Durable and heat-resistant materials
• Ideal for replacement or maintenance

Function and Purpose

This thermostat housing is essential for cooling system efficiency.

It helps to:
• Direct coolant flow through the engine
• Maintain optimal engine operating temperature
• Support thermostat function
• Prevent overheating or overcooling
• Ensure consistent engine performance

Why Replace Thermostat Housing

Over time, thermostat housings can degrade due to heat and pressure.

Common issues include:
• Coolant leaks
• Cracking or warping of housing
• Poor temperature regulation
• Reduced cooling system efficiency
• Risk of engine overheating

Replacing a worn housing restores cooling system performance and reliability.

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95810606000

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Thermostat With Aluminium Housing And 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 2011-18
Porsche 95B Macan S / Turbo 2014-18
Porsche 970 Panamera S / GTS / Turbo 2010-16

Previous numbers:
94810603400, 94810603401, 94810603402, 94810603403

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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94810603404

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Thermostat With Aluminium Housing And 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 2011-18
Porsche 95B Macan S / Turbo 2014-18
Porsche 970 Panamera S / GTS / Turbo 2010-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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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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Water pump thermostat housing with insert and gasket.



Fits:
Porsche 958 Cayenne 3.0L DIESEL 2011 (Engine Code 059E)

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

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95810603210

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Water Pump Thermostat housing with insert.


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

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

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95810603202

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Water pump thermostat housing with insert.



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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95810603202

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Water temperature coolant sensor. 



Fits:

Porsche 718 Boxster - 2017 onwards
Porsche 718 Cayman - 2017 onwards
Porsche 970.1 Panamera V6 models - 2009 to 2013
Porsche 970.2 Panamera - 2014 to 2016
Porsche 992.1 - 2016 to 2019
Porsche 958 Cayenne - 2010 to 2017
Porsche 9YA Cayenne - 2018 to 2023

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95860662320

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Water Temperature Coolant Sensor.

Restore accurate coolant-temperature monitoring and dependable engine-management operation with this OE Match Water Temperature Coolant Sensor. Designed for compatible Porsche applications, this sensor measures coolant temperature and provides the relevant electronic control system with the information required to monitor engine operating conditions.  

Fits:

• Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
• Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
• Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
• Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
• Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
• Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
• Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
• Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
• Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
• Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
• Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
• Porsche 991.1 R 4.0L (500 Bhp) 2016
• Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
• Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
• Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
• Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
• Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
• Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
• Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
• Porsche 991.2 Speedster 4.0L (510Bhp) 2019
• Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
• Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
• Porsche Cayman 718 2.0L Manual (300 Bhp)
• Porsche Cayman 718 2.0L PDK (300 Bhp)
• Porsche Cayman S 718 2.5L Manual (350 Bhp)
• Porsche Cayman S 718 2.5L PDK (350 Bhp)
• Porsche Cayman T 718 2.0L Manual (300 Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
• Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
• Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
• Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
• Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
• Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
• Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
• Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
• Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
• Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
• Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
• Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
• Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
• Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
• Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
• Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
• Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
• 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
• Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 35

Coolant temperature is an important parameter for both engine performance and cooling-system management. As the engine warms from a cold start to normal operating temperature, the sensor continuously provides temperature information that can be used by the ECU for temperature-dependent operating strategies.

The sensor operates in a demanding environment, exposed to hot coolant, pressure and repeated heating and cooling cycles. Over time, the sensing element or electrical connections can deteriorate, causing inaccurate, intermittent or implausible temperature readings.

A defective sensor may incorrectly report that the coolant is hotter or colder than it actually is. This can result in warning messages, diagnostic fault codes and incorrect engine-management behaviour.

This OE Match Water Temperature Coolant Sensor provides a high-quality replacement for a failed or inaccurate original sensor.

What This Product Does:

• Measures engine coolant temperature.
• Provides temperature information to the relevant electronic control system.
• Helps determine whether the engine is cold, warming up or at operating temperature.
• Supports temperature-dependent engine-management strategies.
• Helps maintain correct warm-up operation.
• Supports accurate monitoring of cooling-system temperature.
• Can contribute to cooling-fan control depending on vehicle specification.
• Helps identify abnormal coolant temperatures.
• Supports engine protection and diagnostic functions.
• Helps maintain consistent engine operation as temperature changes.
• Replaces a faulty, inaccurate or intermittent temperature sensor.
• Provides an OE Match replacement for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Cooling-system warning messages.
• Coolant temperature-related diagnostic fault codes.
• Incorrect coolant temperature readings.
• Temperature readings that are unusually high or low.
• Temperature values changing suddenly or erratically.
• Difficult cold starting. Rough running during warm-up.
• Unstable idle. Increased fuel consumption.
• Poor engine performance while warming up.
• Cooling fans operating unexpectedly.
• Cooling fans running excessively.
• Cooling-fan behaviour inconsistent with actual engine temperature.
• Intermittent temperature information.
• Damaged or corroded electrical connector.
• Damaged wiring near the sensor.
• Coolant leakage around the sensor or its seal.  

Why Replacement Matters:

• Accurate coolant-temperature information allows the vehicle's electronic systems to respond correctly as engine temperature changes.
• When the engine is cold, its operating requirements differ from those at normal working temperature. If a defective sensor reports an incorrect temperature, the ECU may make adjustments based on inaccurate information.
• For example, a sensor incorrectly indicating a cold engine can potentially cause inappropriate warm-up strategies to remain active. This may contribute to poor running, increased fuel consumption or higher emissions.
• An incorrectly high reading can cause different control responses and may also make genuine cooling-system faults more difficult to diagnose.
• Intermittent sensors can be particularly problematic because they may operate normally at certain temperatures before suddenly producing implausible values. This can lead to intermittent warning lights, fault codes or inconsistent engine behaviour.
• Replacing a confirmed faulty sensor with this OE Match Water Temperature Coolant Sensor helps restore reliable temperature feedback and correct temperature-dependent system operation.

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95860662320

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