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Thermostat / Temperature Sensor
By OE Match
- Porsche Boxster 986 2.5L 1997-99
- 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 Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- 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 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- 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 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
- Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
- 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 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
- 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
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7PP906270B
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
This OE Match coolant return water hose is a cooling system hose designed for Porsche 911 (996) Carrera 3.4L models with manual transmission produced between 1998 and 2001. This hose forms part of the engine’s coolant return circuit, transferring coolant from the engine return pipe to the main cooling system distribution pipe.
Fits:
Porsche 996 C2 3.4L 1998 - 2001 MANUAL
Diagram ref no 3
This product supersedes Porsche's old part numbers: 99610664156, 99610664158.
The coolant return hose allows coolant to flow back through the engine’s cooling circuit after absorbing heat from the engine. This circulation allows the cooling system to maintain stable engine operating temperatures and prevents overheating.
A properly functioning hose ensures uninterrupted coolant flow and supports efficient temperature control.
Function
• Coolant Return Flow: Transfers coolant from the engine return pipe to the cooling system distribution pipe
• Temperature Regulation: Supports the engine thermostat and radiator system
• Cooling System Integrity: Maintains sealed coolant circulation under pressure
• Engine Protection: Helps prevent overheating and coolant leaks
Coolant hoses are constantly exposed to heat, pressure and chemical contact from coolant. Over time the rubber can harden, crack or weaken, increasing the risk of coolant leaks. Replacing ageing hoses helps maintain cooling system reliability and protects the engine from overheating or coolant loss.
When to Replace. Consider replacing the hose when:
• Coolant leaks are visible around hose connections
• The hose shows cracks, swelling or deterioration
• During cooling system overhaul or thermostat service
• As preventative maintenance on higher-mileage engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610664162
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
Coolant Return Water Hose
Maintain the reliability and efficiency of your Porsche's
cooling system with this OE Match Coolant Return Water Hose. Manufactured for precise fitment and long-lasting
durability, this replacement hose restores the correct circulation of engine
coolant between key cooling system components, helping to regulate engine
temperature under all driving conditions.
- Porsche 996 C4 3.4L 1997-08/01
Diagram ref no 3
The cooling system on the Porsche 996 is critical to
protecting the M96 engine from excessive heat. The coolant return hose carries
coolant back through the system after it has absorbed heat from the engine,
allowing it to be cooled by the radiators before recirculating. Over time, the
original hose is subjected to constant heat cycles, coolant pressure, vibration
and age, causing the rubber to harden, crack or weaken. If left unchecked, this
can result in coolant leaks, pressure loss and ultimately engine overheating.
Replacing ageing coolant hoses is an important part of preventative maintenance and is highly recommended during engine repairs, cooling system overhauls or whenever signs of deterioration become evident.
Manufactured to OE Match standards, this coolant return hose provides dependable sealing, excellent durability and factory-quality fitment for long-term reliability.
What Does the Coolant Return Water Hose Do?
The coolant return hose forms part of the engine's closed cooling system, allowing coolant to circulate efficiently between the engine and cooling components.
Its primary functions include:
- Returning coolant through the cooling circuit.
- Maintaining continuous coolant circulation.
- Helping regulate engine operating temperature.
- Supporting efficient heat transfer.
- Maintaining cooling system pressure.
- Preventing coolant loss from deteriorated hoses.
A correctly functioning coolant hose is essential for maintaining engine efficiency and preventing overheating.
Why Replace the Coolant Return Water Hose?
Rubber coolant hoses gradually deteriorate through exposure to heat, pressure and coolant chemicals.
Common reasons for replacement include:
- Cracked or perished rubber.
- Coolant leaks.
- Soft or swollen hose walls.
- Internal hose degradation.
- Cooling system pressure loss.
- Age-related deterioration.
- Cooling system refurbishment.
- Preventative maintenance.
Replacing worn hoses helps maintain the integrity of the cooling system and significantly reduces the risk of unexpected failures.
Symptoms of a Failing Coolant Hose
A deteriorating coolant return hose may cause:
- Visible coolant leaks.
- Sweet smell of coolant.
- Low coolant warning.
- Damp or stained hoses.
- Cooling system pressure loss.
- Rising engine temperature.
- Steam from the engine compartment.
- Risk of engine overheating.
Replacing the hose restores reliable coolant circulation and helps protect the engine from heat-related damage.
Benefits
- Restores cooling system efficiency.
- Helps prevent coolant loss.
- Supports stable engine operating temperatures.
- Reduces the risk of overheating.
- Straightforward direct replacement.
- Long-lasting, durable construction.
Whenever replacing coolant hoses, it is advisable to inspect the remaining coolant hoses, hose clips, thermostat, water pump, expansion tank and coolant pipe connections, as these components often age together and replacing them at the same time can help prevent future cooling system failures.
Why Choose OE Match Cooling System Components?
OE Match cooling system components are manufactured to deliver factory-quality fitment, dependable durability and reliable long-term performance. Designed specifically for Porsche applications, they help maintain the efficiency of the cooling system while protecting the engine from overheating. Whether you're repairing a coolant leak, carrying out preventative maintenance or undertaking a complete cooling system overhaul, OE Match components provide the quality expected by Porsche enthusiasts and specialist workshops.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610674110
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.6L 09/01-2005
Fits:
Porsche 996 C4 3.6L 2002>> MANUAL
This product supersedes Porsche's old part numbers:
- 99610688802
- 99610688806
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610688808
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
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
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 / GT3 RS 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>>
(*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 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche Carrera GT 2003-06

Fits:
Porsche 996 Turbo 2001-05
Porsche 997 Turbo MKI & MKII 2007>>
Porsche Carrera GT 2004-06
Porsche 996 GT3 3.6L 2000-05
Porsche 997 GT3 3.6L 2007-09
Porsche 997 GT3 3.8L / 4.0L 2010>>
Click 'Zoom in' for large parts diagram.
Diagram Ref No 15.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660614002
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- 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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660615002
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
This OE Match water hose is a coolant hose designed to connect the engine cooling circuit to the water thermostat housing on Porsche 911 (996) models produced between 1998 and 2005. This hose forms part of the engine’s cooling system, allowing coolant to circulate between the engine and thermostat assembly to regulate operating temperature.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Diagram ref no 24
This product supersedes Porsche's old part numbers: 99610650253, 99610650254.
The hose carries coolant between the thermostat housing and the engine’s cooling pipes. This allows the thermostat to regulate coolant flow depending on engine temperature, ensuring the engine warms up efficiently and remains within the correct operating range.
A properly functioning coolant hose is essential to maintain stable engine temperatures and prevent overheating.
Function
• Coolant Circulation: Transfers coolant between the thermostat housing and engine cooling pipes
• Temperature Regulation: Supports thermostat operation in controlling engine temperature
• Cooling System Integrity: Maintains sealed coolant flow under pressure
• Engine Protection: Helps prevent overheating and cooling system leaks
Coolant hoses operate under constant heat and pressure. Over time the rubber can become brittle, swell or crack due to thermal cycling and coolant exposure. A deteriorated hose may cause coolant leaks or reduced cooling efficiency, potentially leading to engine overheating. Replacing worn hoses ensures the cooling system maintains proper pressure and flow.
When to Replace. Consider replacing the hose if you notice:
• Visible cracks, swelling or deterioration in the rubber
• Coolant leaks around the thermostat connection
• Loss of coolant pressure or overheating issues
• During cooling system overhaul or thermostat replacement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610650256
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02

Fits:
Porsche 986 Boxster 2.5L 1997-99
Porsche 996 >>2001
Click 'Zoom in' for large parts diagram.
Diagram Ref No 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660640501
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- 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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Standard Temperature 83 °C
The OE Match Water Thermostat Housing with Thermostat Insert and Gasket is a complete replacement cooling system assembly designed to regulate engine coolant flow and maintain the optimum operating temperature. Supplied with a standard temperature 83°C thermostat insert and sealing gasket, this OE-quality assembly provides a direct replacement solution for worn or faulty thermostat housings.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- 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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Diagram Ref No 5
Manufactured to OE specifications for fit, durability and cooling performance, the assembly features a precision-engineered thermostat housed within a robust, heat-resistant housing. The thermostat remains closed during engine warm-up to allow the engine to reach its correct operating temperature quickly before opening at approximately 83°C to allow coolant to circulate through the radiator, preventing overheating while maintaining efficient engine operation.
What This Product Does:
- Regulates coolant flow throughout the engine cooling system.
- Opens at approximately 83°C to maintain the correct engine operating temperature.
- Speeds up engine warm-up after a cold start.
- Prevents engine overheating during normal operation.
- Improves fuel efficiency by maintaining optimum engine temperature.
- Supports efficient cabin heater performance.
- Includes a new housing, thermostat insert and gasket for a complete installation.
Symptoms Of Wear Or Failure:
- Engine overheating.
- Engine taking an unusually long time to reach operating temperature.
- Fluctuating temperature gauge readings.
- Coolant leaks around the thermostat housing.
- Low coolant level warnings.
- Poor cabin heater performance.
- Engine running too hot or too cold.
- Illuminated engine or cooling system warning lights.
- Visible cracks or damage to the thermostat housing.
- Increased fuel consumption caused by incorrect engine temperature.
Why Replacement Matters:
- The thermostat and housing are essential components of the engine cooling system and are continuously exposed to heat cycles, coolant pressure and engine vibration. Over time, the thermostat can stick open or closed, while the housing and seals may deteriorate or develop leaks.
- A thermostat that remains closed can quickly cause engine overheating, while one that remains open prevents the engine from reaching its correct operating temperature. Both conditions reduce engine efficiency, increase fuel consumption and can lead to premature engine wear. Coolant leaks from a damaged housing can also result in coolant loss and severe engine damage if left unresolved.
- Replacing the complete thermostat housing assembly with a new thermostat insert and gasket restores correct coolant regulation, improves engine efficiency and protects against overheating. An OE Match replacement provides factory-style fitment, reliable temperature control and long-lasting durability, helping maintain the performance, reliability and longevity expected from your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601361
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- 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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2, C4
Porsche 987 Boxster 2005>>
Porsche 997 2005 - 2008
Installation recommended only by trained Porsche technician or Porsche service department using genuine Porsche coolant.
Diagram Ref No 5, 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601361
The product you are viewing cross references to these numbers
-
replacement engine: without drive plate tiptronic, without flywheel manual transmission, without compressor for 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 101-00
-
oil pump 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 104-00
-
engine lubrication 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 104-05
-
water pump, thermostat housing 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 105-00
-
water cooling - 1 - for 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 105-05
-
intake distributor 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 107-10
-
air injection 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 108-05
-
tiptronic atf cooler, atf lines 996 CARRERA 2/4 (M338/M339) A96.10/35 2002 ONWARDS 360-03
-
belt tensioner, belt drive 996 TURBO 2001-05 101-15
-
engine lubrication, oil tank 996 TURBO 2001-05 104-05
-
oil filter bracket 996 TURBO 2001-05 104-10
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air injection 996 TURBO 2001-05 108-05
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transmission oil cooler lines 996 GT2 G96.88 2001-05 307-00
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tiptronic atf cooler, atf lines 996 TURBO TIPTRONIC A96.50 2001-05 360-00
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belt tensioner, belt drive 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 101-15
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engine lubrication oil tank 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 104-05
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water pump, water pump housing 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 105-00
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throttle body 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 107-00
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air injection 996 GT3-1/GT3 RS M96.79 2004-05 108-05
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transmission oil cooler lines 996 GT3-1 G96.96 2004-05 307-00
OEMatch Thermostat / Temperature Sensor — Fit, Function, Confidence
Engine thermostats and temperature sensors control coolant flow and send temperature data to the engine control unit, helping to maintain correct operating temperature for Porsche models. Proper function supports warm-up, emissions control and cabin heating, and reduces the risk of avoidable engine stress. OEMatch focuses on Thermostat / Temperature Sensor-related items selected for Porsche applications.
Available Types
- Fixed-opening and temperature-controlled thermostats
- Coolant temperature sensors and senders (engine and radiator)
- Thermostat housings and integrated sender assemblies
Understanding OEMatch Thermostat / Temperature Sensor
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original thermostat / temperature sensor. OE (Original Equipment) refers to parts matching original specifications for the thermostat / temperature sensor and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM thermostat / temperature sensor engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. A thermostat opens at a specified temperature to allow coolant to circulate through the radiator, while temperature sensors measure coolant or cylinder head temperature and inform fan control, fuel mixture and emissions strategies. Both components work together to keep the engine within its designed operating window and to support reliable vehicle operation.
Benefits Include
- Stable engine operating temperature and predictable warm-up
- Accurate temperature input for ECU control and cooling fans
- Consistent cabin heating and support for emissions systems
Why Thermostat / Temperature Sensor Wear and Fail
- Thermostat valve sticking or corrosion caused by debris and old coolant
- Sensor degradation from prolonged heat exposure and contaminated coolant
- Electrical faults, corroded connectors or damaged wiring affecting readings
The Importance of Replacing with OEMatch Thermostat / Temperature Sensor
Replacing worn or faulty thermostats and sensors restores reliable temperature control and helps prevent overheating, long warm-up times and poor fuel economy. Correctly matched replacements reduce the chance of installation issues and support consistent ECU behaviour, heater performance and long-term engine condition across Porsche model ranges.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Components selected for compatibility with factory cooling circuits and mounting points
- Cost-effective alternatives that preserve fit and function for Porsche applications
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.