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- Porsche 955 Cayenne 3.2L V6 2003-06
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Related, superseded, cross reference or alternative numbers for comparison.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 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 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 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
Water Temperature Sensor
OE Match replacement water temperature sensor for Porsche
Boxster 986 and Porsche 996 models.
Fits:
- 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
Diagram Ref No 29
This essential engine management component monitors coolant temperature and sends information to the engine control unit (ECU), helping regulate fuel delivery, engine performance and cooling system operation.
Designed as an original-style replacement, it helps restore accurate temperature monitoring and reliable engine operation when the original sensor becomes faulty.
What Does the Water Temperature Sensor Do?
The sensor measures engine coolant temperature and sends an electrical signal to the ECU.
This information helps the engine management system adjust fuel mixture, cold-start operation and other temperature-dependent functions, ensuring efficient engine performance.
Why Does It Fail?
Over time, repeated heating and cooling cycles, moisture and electrical deterioration can affect sensor accuracy.
Common problems include:
- Internal sensor failure
- Corroded or damaged electrical connections
- Incorrect or fluctuating temperature readings
- Intermittent electrical signals
- Damage caused by coolant leaks or overheating
When Should It Be Replaced?
Replacement may be necessary if you experience:
- Incorrect or erratic engine temperature readings
- Difficult cold starting or poor warm-up performance
- Increased fuel consumption
- Engine management warning lights
- Cooling fan operation that appears abnormal
Before replacement, check the coolant level, electrical connector, wiring and relevant fault codes to confirm the cause.
Additional 996 variants may have different sensor arrangements. Confirm compatibility using the original part number or vehicle VIN before ordering.
Porsche Boxster 986 & 911 996 Coolant Temperature Sensors
The coolant temperature sensor plays an important role in the engine management system of water-cooled Porsche models, providing accurate temperature information for efficient engine operation.
A faulty sensor can cause incorrect temperature readings, poor cold starting, increased fuel consumption and engine management faults.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660640501
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