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- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
This Wahler Water Pump Thermostat Insert is a Porsche 987.2 / 997.2 / 991.1 cooling system component designed to regulate coolant flow within the engine cooling circuit. Installed within the thermostat housing or water pump assembly, this thermostat insert opens and closes at predetermined temperatures to control coolant circulation between the engine and radiator.
Fits:
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Diagram Ref No 21
What This Product Does:
- Regulates coolant flow through the engine cooling system
- Maintains optimal engine operating temperature
- Controls engine warm-up and cooling efficiency
- Works with the water pump to ensure effective coolant circulation
- Helps prevent overheating and overcooling
- Supports fuel efficiency and emissions performance
Symptoms Of Wear Or Failure:
- Engine overheating
- Engine running too cool or warming up slowly
- Fluctuating temperature gauge readings
- Poor heater performance inside the cabin
- Coolant leaks around the thermostat housing
- Reduced fuel economy caused by incorrect operating temperature
- Check engine light related to cooling system faults
Why Replacement Matters:
- Restores proper coolant flow and temperature regulation
- Prevents overheating and potential engine damage
- Improves engine efficiency and fuel economy
- Ensures reliable heater and climate control operation
- Protects cooling system components from excessive wear and stress
- Maintains long-term engine reliability and performance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110622503
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
Fits:
Porsche 958 Cayenne Hybrid 3.0L 2011 - 2018
Porsche 970 Panamera Hybrid 3.0L 2011 - 2016
Diagram ref no 24
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95860656700
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
- Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16
Fits:
Porsche 958 Cayenne 3.0L HYBRID 2011-18
Porsche 970 Panamera HYBRID 2012-16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAC121018A
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
Fits:
Porsche 957 Cayenne 3.0L DIESEL 2009-10
Porsche 958 Cayenne 3.0L DIESEL 2011
Water pump impeller material: Sheet Steel
NOTE: Water Pump COMES WITH MOUNTING GASKET.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810603312
The product you are viewing cross references to these numbers