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Porsche Thermostats

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What Happens If the Car Thermostat is Removed?

Removing a car's thermostat from the cooling system can cause problems. The thermostat regulates engine temperature by controlling coolant flow. Removal or permanent opening of the thermostat can cause engine overcooling, delayed warm-up, poor heater effectiveness, reduced fuel efficiency, increased engine wear, and engine damage. If the thermostat is broken, replacing it is better than removing it, which can affect engine performance, efficiency, and longevity.

Other Components

  1. Fuses

    Fuses prevent electrical circuit overloads. They are installed in a vehicle's fuse box and interrupt the circuit if the current runs too high.

  2. Water Pumps

    Water pumps are essential to vehicle cooling. The engine drives them to circulate coolant to disperse combustion heat.

  3. Radiator

    A vehicle's cooling system relies on the radiator. It helps coolant and air heat exchange. Coolant dissipates heat via the engine and radiator, preventing overheating.

Order Factory Porsche Thermostats at Delaware Porsche Parts

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Thermostat
Part Number: 958-106-126-02
Porsche Porsche
Description: Cayenne. Without turbo. 3.6L, 2011-14.
Fits:
  • Porsche:
    • Cayenne
MSRP $107.38
$75.45
MSRP $107.38
$75.45
Thermostat
Part Number: 955-106-126-01
Porsche Porsche
Replaces: 955-106-126-00
Description: Cayenne. 3.6L.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $96.85
$68.06
MSRP $96.85
$68.06
Thermostat
Part Number: 9A1-106-225-03
Porsche Porsche
Replaces: 9A1-106-225-01, 9A1-106-225-02
Description: 2009-12. Boxster. Cayman. 3.8L, water pump and thermostat. 4.0L. With gt3. 3.8l. 911 Turbo.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $102.16
$71.78
MSRP $102.16
$71.78
Thermostat
Part Number: 4E0-121-113
Porsche Porsche
Description: Electric motor cooling, 2014-16.
Fits:
  • Porsche:
    • Panamera
MSRP $76.50
$54.20
MSRP $76.50
$54.20
Thermostat
Part Number: 955-106-113-00
Porsche Porsche
Description: Cayenne. 3.2L.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $102.69
$72.15
MSRP $102.69
$72.15
Thermostat
Part Number: 996-106-125-54
Porsche Porsche
Other Names: R P 99610612554
Replaces: 996-106-125-52, 996-106-125-53
Description: 911. 2005-08. Boxster. Without gt3. 2006-08. Cayman, caymans.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $74.56
$56.15
MSRP $74.56
$56.15
Thermostat
Part Number: 9GT-121-113
Porsche Porsche
Description: 4.0l. 911.
Fits:
  • Porsche:
    • 718 Cayman,
    • 911
MSRP $370.48
$249.43
MSRP $370.48
$249.43
Thermostat
Part Number: 944-106-129-05
Porsche Porsche
Replaces: 944-106-129-04
Description: 944. Large dia. 924.
Fits:
  • Porsche:
    • 924,
    • 944
MSRP $36.14
$31.06
MSRP $36.14
$31.06
Thermostat
Part Number: 948-106-125-01
Porsche Porsche
Description: 4.8L. Cayenne.
Fits:
  • Porsche:
    • Cayenne
MSRP $108.98
$76.58
MSRP $108.98
$76.58
Thermostat
Part Number: 951-107-155-01
Porsche Porsche
Replaces: 951-107-155-00
MSRP $96.96
$72.42
MSRP $96.96
$72.42
Thermostat Unit
Part Number: PAB-121-115-B
Porsche Porsche
Other Names: Thermostat, Thermostat Housing, Engine Coolant Thermostat Housing, Engine Coolant Thermostat Kit
Replaces: 9A7-121-115-10, 9A7-121-115-11, PAC-121-115
Description: 3.0L, to 02/03/2019.
Notes: Includes Thermostat Gasket. Part has related component that cannot be reused/reinstalled. o-ring. Part cannot be reused/reinstalled.
Fits:
  • Porsche:
    • Cayenne,
    • Macan,
    • Panamera
MSRP $325.65
$223.07
MSRP $325.65
$223.07
Thermostat Housing
Part Number: PAC-121-111-C
Porsche Porsche
Other Names: Thermostat, Coolant Regulator
Replaces: PAC-121-111, PAC-121-111-A, PAC-121-111-B
Description: 2.0L. Macan.
Fits:
  • Porsche:
    • Macan
MSRP $702.62
$473.05
MSRP $702.62
$473.05
Thermostat Housing
Part Number: 948-106-080-02
Porsche Porsche
Other Names: Water Outlet
Replaces: 948-106-080-00
Description: Panamera. 4.8L. 3.6L. Cayenne. Without turbo.
Fits:
  • Porsche:
    • Cayenne,
    • Panamera
MSRP $586.82
$395.08
MSRP $586.82
$395.08
Thermostat Cover
Part Number: 948-106-130-06
Porsche Porsche
Other Names: Cover, Thermostat Housing
Description: Cayenne. 4.5L.
Fits:
  • Porsche:
    • Cayenne
MSRP $648.58
$464.14
MSRP $648.58
$464.14
Thermostat Housing
Part Number: 955-106-060-00
Porsche Porsche
Description: 3.6L. Cayenne.
Fits:
  • Porsche:
    • Cayenne
MSRP $128.98
$90.63
MSRP $128.98
$90.63
Thermostat Cover
Part Number: 955-106-131-00
Porsche Porsche
Other Names: Water Outlet, Lid
Description: 3.6L. Cayenne.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $32.38
$26.18
MSRP $32.38
$26.18
Thermostat Housing
Part Number: 996-106-013-61
Porsche Porsche
Other Names: Housing
Replaces: 996-106-013-59
Description: 2005-08. Boxster. Without gt3. 911. 2006-08. Cayman, caymans.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $90.11
$67.30
MSRP $90.11
$67.30
Thermostat Housing
Part Number: 996-106-121-72
Porsche Porsche
Other Names: Engine Coolant Thermostat Housing, Lid
Replaces: 996-106-121-71, 996-106-121-91
Description: 3.6L. With gt3. 911.
Fits:
  • Porsche:
    • 911
MSRP $54.54
$41.08
MSRP $54.54
$41.08
Thermostat Cover
Part Number: 9A1-106-121-00
Porsche Porsche
Other Names: Water Guide Housing
Description: 2009-12.
Fits:
  • Porsche:
    • Boxster,
    • Cayman
MSRP $165.60
$116.36
MSRP $165.60
$116.36
Thermostat Housing
Part Number: 9A2-106-022-02
Porsche Porsche
Other Names: Water Guide Housing
Replaces: 9A2-106-022-01, 9A2-106-122-01
Description: Boxster. Cayman. Water pump & thermostat.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman
MSRP $228.30
$156.39
MSRP $228.30
$156.39
Thermostat Housing
Part Number: 946-106-080-61
Porsche Porsche
Description: 3.6L, 2015-18. 3.0L. Cayenne. With turbo. 3.6L, 2015-17.
Fits:
  • Porsche:
    • Cayenne,
    • Panamera
MSRP $682.93
$459.79
MSRP $682.93
$459.79
Thermostat Housing
Part Number: 958-106-032-02
Porsche Porsche
Other Names: Thermostat Unit
Replaces: 958-106-032-00, 958-106-032-01
Description: Cayenne hybrid. Panamera hybrid.
Notes: Includes Thermostat.
Fits:
  • Porsche:
    • Cayenne,
    • Panamera
MSRP $193.79
$132.75
MSRP $193.79
$132.75
Thermostat Screw
Part Number: 9A7-008-132-00
Porsche Porsche
Other Names: Hexagon Head Bolt
Description: Water pump & thermostat.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman
MSRP $3.57
$2.89
MSRP $3.57
$2.89
Thermostat Housing
Part Number: 9GT-121-716
Porsche Porsche
Description: With gt3. 4.0l. 911.
Notes: Includes Thermostat And Gasket.
Fits:
  • Porsche:
    • 718 Cayman,
    • 911
MSRP $324.13
$222.04
MSRP $324.13
$222.04
Thermostat Housing
Part Number: 946-106-080-31
Porsche Porsche
Description: 2015-18. Macan. 3.0l. Macan. 3.6l.
Fits:
  • Porsche:
    • Macan
MSRP $732.87
$493.41
MSRP $732.87
$493.41
Thermostat Housing
Part Number: 948-106-140-02
Porsche Porsche
Other Names: Insert
Description: 4.5L. Cayenne.
Fits:
  • Porsche:
    • Cayenne
MSRP $95.44
$67.06
MSRP $95.44
$67.06
Thermostat Housing
Part Number: 955-106-111-00
Porsche Porsche
Description: 3.2L. Cayenne.
Notes: Includes Thermostat.
Fits:
  • Porsche:
    • Cayenne
MSRP $255.36
$174.92
MSRP $255.36
$174.92
Thermostat Housing
Part Number: 930-107-017-01
Porsche Porsche
Replaces: 911-107-015-01, 911-107-015-02, 911-107-015-03, 930-107-017-00
MSRP $557.17
$398.72
MSRP $557.17
$398.72
Thermostat Housing
Part Number: 9A1-106-150-01
Porsche Porsche
Other Names: Housing
Description: 2009-12. Boxster. Cayman. 3.8L, water pump and thermostat. With gt3. 911 Turbo.
Notes: Includes Thermostat And Gasket.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $250.14
$171.35
MSRP $250.14
$171.35
Thermostat Cover
Part Number: 955-106-121-00
Porsche Porsche
Other Names: Connection Piece
Description: 3.2L.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $41.85
$33.84
MSRP $41.85
$33.84
Thermostat Housing
Part Number: 958-106-060-00
Porsche Porsche
Options: Lower
Other Names: Engine Coolant Thermostat Housing
Description: Cayenne. Without turbo.
Fits:
  • Porsche:
    • Cayenne
MSRP $144.44
$101.49
MSRP $144.44
$101.49
Engine Coolant Thermostat
Part Number: 9A7-121-110-00
Porsche Porsche
Other Names: Thermostat
Replaces: 9A1-106-226-02, 9A1-106-226-03
Description: 3.4, 3.8L, without gt3. 3.0l. Boxster. Cayman. 4.0L, without gt4 rs. Water pump & thermostat. 911 Turbo. Spyder.
Notes: Included with water thermostat housing. Part cannot be reused/reinstalled.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • 718 Spyder,
    • 911,
    • Boxster,
    • Cayman
MSRP $236.29
$161.87
MSRP $236.29
$161.87
Engine Coolant Thermostat
Part Number: 948-106-034-04
Porsche Porsche
Other Names: Thermostat, Thermostat Unit
Replaces: 948-106-034-00, 948-106-034-01, 948-106-034-02, 948-106-034-03
Description: Panamera. 4.8L. 2015-18. Cayenne. Macan. 3.0l. Without turbo. Macan. 3.6l. Incl.Gasket.
Fits:
  • Porsche:
    • Cayenne,
    • Macan,
    • Panamera
MSRP $300.94
$206.15
MSRP $300.94
$206.15
Engine Coolant Thermostat
Part Number: 996-106-125-73
Porsche Porsche
Other Names: Thermostat
Replaces: 996-106-125-70, 996-106-125-71, 996-106-125-72
Description: 911 Turbo. 4.5L. Cayenne. 3.6L. With gt3.
Fits:
  • Porsche:
    • 911,
    • Cayenne
MSRP $87.78
$65.56
MSRP $87.78
$65.56
Engine Coolant Thermostat
Part Number: 944-106-019-00
Porsche Porsche
Other Names: Thermostat
Description: 968. All Required. 944.
Fits:
  • Porsche:
    • 928,
    • 944,
    • 968
MSRP $36.14
$31.06
MSRP $36.14
$31.06
Thermostat Housing Gasket **(2 REQ'D)**
Part Number: 948-106-124-02
Porsche Porsche
Other Names: Connector Tube Gasket, Thermostat Housing O-Ring, Engine Coolant Thermostat Housing Gasket, Gasket
Description: 4.8L. 2015-18. O-Ring. Without turbo. 3.6L, 2015-17. **(2 REQ'D)**
Fits:
  • Porsche:
    • Cayenne,
    • Macan,
    • Panamera
MSRP $8.81
$7.13
MSRP $8.81
$7.13
Thermostat Housing Gasket
Part Number: 955-106-115-00
Porsche Porsche
Other Names: Gasket
Description: 3.2L.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $11.41
$9.24
MSRP $11.41
$9.24
Engine Coolant Thermostat
Part Number: 997-106-225-8A
Porsche Porsche
Other Names: Thermostat
Fits:
  • Porsche:
    • Carrera GT
MSRP $387.38
$375.69
MSRP $387.38
$375.69
Engine Coolant Thermostat
Part Number: 9A1-106-225-97
Porsche Porsche
Other Names: Thermostat
Description: 911. With gt3. 4.0l.
Fits:
  • Porsche:
    • 911
MSRP $132.38
$93.02
MSRP $132.38
$93.02
Thermostat Housing Gasket
Part Number: 9A7-121-139
Porsche Porsche
Other Names: Gasket, Seal
Replaces: 958-121-139-00
Description: 2.0L. Macan.
Notes: Part serviced with thermostat housing.
Fits:
  • Porsche:
    • Macan
MSRP $44.29
$32.77
MSRP $44.29
$32.77
Thermostat Housing Gasket
Part Number: 9A2-106-332-00
Porsche Porsche
Options: Inner
Other Names: Gasket
Description: Boxster. Inner. Cayman. Water pump & thermostat.
Notes: Part cannot be reused/reinstalled.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman
MSRP $13.61
$12.04
MSRP $13.61
$12.04
Thermostat Unit Bolt
Part Number: N-101-243-06
Porsche Porsche
Options: Left Rear, Left Lower, Right Rear, Right Lower
Other Names: Water Pump Bolt, Oil Cooler Bolt, Intake Tube Screw, Secondary Air Injection Pump Hose Bolt, Valve Screw, Fan Assembly Bolt, Lower...
Replaces: N-101-253-06
Description: Water pump & thermostat, 2.0, 2.5L. 3.6L. 3.0L, without e-hybrid. Without turbo. 2.9L, engine. 3.0L diesel. 2019-21. 4.0L with e-hybrid...
Notes: Included with heat exchanger.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • Cayenne,
    • Macan,
    • Panamera
MSRP $1.36
$1.10
MSRP $1.36
$1.10
Thermostat Outlet Bolt
Part Number: N-106-112-01
Porsche Porsche
Other Names: Oval Head Panel Screw
Description: 3.6L, 2011-14.
Fits:
  • Porsche:
    • Cayenne
MSRP $0.69
$0.56
MSRP $0.69
$0.56
Engine Coolant Thermostat
Part Number: 951-106-311-00
Porsche Porsche
Other Names: Thermostat
Description: 944. Small dia. All Required.
Fits:
  • Porsche:
    • 944
MSRP $51.49
$38.78
MSRP $51.49
$38.78
Thermostat Housing Support
Part Number: 955-106-501-00
Porsche Porsche
Other Names: Support
Description: 3.2L.
Fits:
  • Porsche:
    • Cayenne
MSRP $19.98
$16.16
MSRP $19.98
$16.16
Engine Coolant Thermostat
Part Number: 918-106-281-00
Porsche Porsche
Other Names: Thermostat
Fits:
  • Porsche:
    • 918 Spyder
MSRP $439.78
$296.09
MSRP $439.78
$296.09
Engine Coolant Thermostat
Part Number: 928-106-129-17
Porsche Porsche
Other Names: Thermostat
Replaces: 928-106-129-04, 928-106-129-05, 928-106-129-06, 928-106-129-15, 928-106-129-16
Description: 928 GTS.
Fits:
  • Porsche:
    • 928
MSRP $55.04
$41.45
MSRP $55.04
$41.45
Thermostat Housing Adapter
Part Number: PAA-121-147
Porsche Porsche
Other Names: Connector, Connection Piece
Replaces: 9A1-106-642-00
Description: 4.0L, without gt4 rs. Water pump & thermostat.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • 718 Spyder,
    • Cayman
MSRP $10.51
$9.30
MSRP $10.51
$9.30
Thermostat Housing Bolt
Part Number: WHT-004-972
Porsche Porsche
Other Names: Hexagon Head Bolt
Description: 2.0L.
Fits:
  • Porsche:
    • Macan
MSRP $3.03
$2.45
MSRP $3.03
$2.45
Thermostat Cover O-Ring
Part Number: WHT-000-863
Porsche Porsche
Other Names: Gasket, Thermostat O-Ring, Engine Coolant Thermostat Gasket, Seal Ring
Description: Without turbo. Cayenne. 3.6L. O-Ring.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $4.55
$3.69
MSRP $4.55
$3.69
Engine Coolant Thermostat Gasket
Part Number: 0PB-121-688
Porsche Porsche
Other Names: Engine Coolant Thermostat Housing O-Ring, Thermostat Housing Gasket, Thermostat Gasket, Gasket
Description: 2.0, 2.5L water pump & thermostat. 4.0L without gt4 rs water pump & thermostat. 3.0L turbo. 911.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • 718 Spyder,
    • 911,
    • Cayman
MSRP $16.19
$14.33
MSRP $16.19
$14.33
Engine Coolant Thermostat Gasket
Part Number: 0PB-121-688-A
Porsche Porsche
Options: Upper, Inner
Other Names: Engine Coolant Thermostat Seal, Engine Coolant Thermostat Housing Gasket, Seal Ring
Replaces: 9A1-106-558-00
Description: 3.8L water pump and thermostat. 4.0l.
Fits:
  • Porsche:
    • 718 Cayman,
    • 911,
    • 918 Spyder,
    • Boxster,
    • Cayman
MSRP $17.53
$14.19
MSRP $17.53
$14.19
Engine Coolant Thermostat Gasket
Part Number: PAF-008-955-A
Porsche Porsche
Options: Center, Outer
Other Names: O-Ring, Thermostat O-Ring, Thermostat Gasket, Gasket, O Ring
Replaces: 999-707-625-40
Description: 2009-12. 3.8L, water pump and thermostat. 911. With gt3. Center. 4.0l.
Fits:
  • Porsche:
    • 718 Cayman,
    • 911,
    • 918 Spyder,
    • Boxster,
    • Cayman
MSRP $6.97
$5.64
MSRP $6.97
$5.64
Engine Coolant Thermostat Gasket
Part Number: 999-707-283-40
Porsche Porsche
Other Names: Round Seal
Replaces: 900-174-049-40
Description: All Required.
Fits:
  • Porsche:
    • 944
MSRP $4.88
$3.67
MSRP $4.88
$3.67
Engine Coolant Thermostat Housing
Part Number: 918-106-213-08
Porsche Porsche
Other Names: Thermostat Housing
Replaces: 918-106-213-07
Fits:
  • Porsche:
    • 918 Spyder
MSRP $903.96
$608.60
MSRP $903.96
$608.60
Engine Coolant Thermostat Gasket
Part Number: 951-106-155-00
Porsche Porsche
Other Names: Sealing Ring
Description: All Required.
Fits:
  • Porsche:
    • 924,
    • 944,
    • 968
MSRP $14.67
$13.80
MSRP $14.67
$13.80
Thermostat Housing O-Ring
Part Number: 955-106-119-00
Porsche Porsche
Other Names: Gasket
Description: 3.2L.
Notes: Included with thermostat housing.
Fits:
  • Porsche:
    • Cayenne
MSRP $5.13
$4.15
MSRP $5.13
$4.15
Engine Coolant Thermostat Housing
Part Number: 9A1-106-111-01
Porsche Porsche
Options: Upper
Other Names: Housing, Water Guide Housing
Description: 3.8L, water pump and thermostat.
Fits:
  • Porsche:
    • 911
MSRP $930.05
$665.57
MSRP $930.05
$665.57
Engine Coolant Thermostat Housing
Part Number: 980-106-921-00
Porsche Porsche
Other Names: Thermostat Housing
Fits:
  • Porsche:
    • Carrera GT
MSRP $943.07
$830.63
MSRP $943.07
$830.63
Engine Coolant Thermostat Kit
Part Number: 0PB-121-115
Porsche Porsche
Other Names: Water Guide Housing
Description: Incl.Housing and Thermostat. 3.0l.
Fits:
  • Porsche:
    • 911
MSRP $516.62
$347.82
MSRP $516.62
$347.82
Engine Coolant Thermostat Housing
Part Number: 0PB-121-117
Porsche Porsche
Other Names: Thermostat Housing
Description: 3.0l.
Fits:
  • Porsche:
    • 911
MSRP $323.98
$221.93
MSRP $323.98
$221.93

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