Subaru Thermostats

The cooling system in your Subaru is something that is pretty complex. It relies on the operation of a range of parts to work properly. It's important that you are checking the condition of the various cooling parts in your vehicle to help prevent things from overheating. All of them work together to help keep your engine running smoothly. The thermostat is one of these components. The thermostat works by opening and shutting to allow the flow of coolant to your engine as needed, or to prevent it when not needed. This regulation is important so that you are able to get your engine heated up to an appropriate temperature but so it won't overheat. Having a good quality thermostat in place is key. If your thermostat starts to malfunction, it can cause problems with the operation of your car. You could notice the engine temperature jumping drastically after starting your car, which is an indicator of a problem. If you need a replacement thermostat, make sure you get one that is made for your Subaru make and model. Shop here at Subaru Parts Mall for the best one.

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Thermostat
Part Number: 21210AA120
Other Names: Thermostat And Gasket Ay, More Names
Description: Outback. Legacy. 2.5L without turbo, 2010-12. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
$29.95
$23.18
$29.95
$23.18
Thermostat
Part Number: 21210AA221
Positions: Front
Other Names: Thermostat And Gasket Ay, More Names
Replaces: 21210AA220
Description: Forester. WRX. 2.0L. Front. With turbo. More Info
Fits:
  • Subaru:
    • Ascent,
    • Forester,
    • WRX
$29.95
$23.18
$29.95
$23.18
Thermostat
Part Number: 21200KA050
Other Names: PT500289 Thermostat, More Names
Replaces: 417535500
Description: Justy. All models. Without fuel injection. More Info
Fits:
  • Subaru:
    • Justy
$21.95
$16.99
$21.95
$16.99
Thermostat
Part Number: 21210AA160
Other Names: Thermostat And Gasket Ay, More Names
Description: Legacy. 2.5L with turbo. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
$29.95
$23.18
$29.95
$23.18
Thermostat
Part Number: 21210AA290
Positions: Upper
Other Names: Thermostat And Gasket Ay, More Names
Description: Upper. More Info
Fits:
  • Subaru:
    • Forester
$29.95
$23.18
$29.95
$23.18
Thermostat
Part Number: 21210AA260
Other Names: Thermostat And Gasket Ay, More Names
Description: Legacy, Outback. 2.5L. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
$29.95
$23.18
$29.95
$23.18
Thermostat Housing
Part Number: 11060AA061
Other Names: Thermostat Cover, Water Inlet, Engine Coolant Thermostat Housing, Cover Thermo, More Names
Replaces: 11060AA060
Description: Legacy/Outback. Forester. WRX STI. Impreza. Baja. SVX. All. 2.0l. 2.5L, 2006-07. 2.5L without turbo, 2010-12. More Info
Notes: Included With Thermostat Unit. Included With Repair Kit. More Notes
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • SVX,
    • WRX STI
  • 2 more
$30.42
$23.54
$30.42
$23.54
Thermostat Housing
Part Number: 11060AA071
Other Names: Thermostat Cover, Cover-Thermo, More Names
Replaces: 11060AA050, 11060AA070
Description: Legacy/Outback. Forester. Impreza. Baja. All. 2.5L, 2005. 2.5L, 2006-07. 2.5L, 2002-05. Manual trans. Without turbo. More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
$22.53
$17.44
$22.53
$17.44
Thermostat Cover
Part Number: 11060AA190
Other Names: Thermostat Housing, Cover Thermo, More Names
Description: Legacy/Outback. Tribeca. 3.6L. 2008-14. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback,
    • Tribeca
$20.03
$15.51
$20.03
$15.51
Thermostat Unit
Part Number: 21200AA200
Other Names: Thermostat Assembly, More Names
Description: 2.5L without turbo, 2010-12. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
$21.95
$16.99
$21.95
$16.99
Thermostat Housing
Part Number: 11060AA030
Other Names: Engine Coolant Thermostat Housing, Cover Thermo, More Names
Description: XT coupe. Loyale. 1.8l. From 01/87. All models. Sedan, coupe, wagon. Without injection & turbo. More Info
Fits:
  • Subaru:
    • DL,
    • GL,
    • GL-10,
    • Loyale,
    • XT
$20.10
$15.56
$20.10
$15.56
Thermostat Cover
Part Number: 11060AA150
Other Names: Thermostat Housing, Cover Thermo, More Names
Description: Legacy/Outback. Tribeca. 3.0L. 2006-07. More Info
Fits:
  • Subaru:
    • B9 Tribeca,
    • Legacy,
    • Outback
$22.02
$17.04
$22.02
$17.04
Thermostat Unit
Part Number: 21210AA080
Other Names: Thermostat, Thermostat And Gasket Ay, More Names
Description: Legacy/Outback. Tribeca. 3.0l. 3.6L. 2008-14. 2.5L, 2006-07. 2.5L without turbo, 2009-10. More Info
Fits:
  • Subaru:
    • B9 Tribeca,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • Tribeca
  • 1 more
$29.95
$23.18
$29.95
$23.18
Thermostat Housing
Part Number: 11060AA300
Positions: Lower, Front
Other Names: Water Inlet, Thermostat Cover, Water Outlet, Cover Thermo, More Names
Description: Crosstrek. Forester. Impreza. WRX. 2.0L. Front. Lower. With turbo. More Info
Fits:
  • Subaru:
    • Ascent,
    • Crosstrek,
    • Forester,
    • Impreza,
    • WRX
$32.17
$24.90
$32.17
$24.90
Thermostat Unit
Part Number: 21200AA230
Other Names: Thermostat Assembly, More Names
Description: 2.5L with turbo. More Info
Notes: Included With Thermostat. More Notes
Fits:
  • Subaru:
    • Legacy,
    • Outback
$21.95
$16.99
$21.95
$16.99
Thermostat Housing
Part Number: 11060AA260
Positions: Lower
Other Names: Thermostat Cover, Water Inlet, Outlet Tube, Engine Coolant Thermostat Housing, Cover Thermo, More Names
Description: Legacy, Outback. XV Crosstrek. Forester. Impreza. BRZ. Lower. With hybrid. Engine Cooling. 2.5L without turbo, 2013-14. 2.5L without... More Info
Fits:
  • Subaru:
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
  • 2 more
$22.85
$17.69
$22.85
$17.69
Engine Coolant Thermostat
Part Number: 21200AA072
Other Names: Thermostat, More Names
Replaces: 21200AA070, 21200AA071
Description: Forester, Impreza. Legacy, Outback. WRX STI. Baja. SVX. 3.0L. Thermostat. With turbo. 2.5L turbo. All models. 2.5L, 2002-05. 2.0L,... More Info
Notes: Included With Thermostat Unit. Included With Repair Kit. More Notes
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • SVX,
    • WRX STI
  • 2 more
$21.95
$16.99
$21.95
$16.99
Engine Coolant Thermostat
Part Number: 21210AA030
Other Names: Thermostat Unit, Thermostat, Repair Kit, Thermostat And Gasket Ay, More Names
Description: Legacy/Outback. Forester. 3.6L. 2.5L, 2005. Thermostat. Incl.Gasket. 2.5L with turbo. 2.0L, with gasket. More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX STI
  • 1 more
$29.95
$23.18
$29.95
$23.18
Thermostat Housing Bolt
Part Number: 21177AA000
Other Names: Engine Coolant Thermostat Housing Bolt, Bolt, More Names
Description: 2.5L 2005. More Info
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
$0.74
$0.48
$0.74
$0.48
Engine Coolant Thermostat
Part Number: 21210AA211
Other Names: Thermostat, Thermostat And Gasket Ay, More Names
Replaces: 21210AA210
Description: XV Crosstrek. Impreza. Outback. Legacy. Incl.Gasket. Engine Cooling. 2.5L without turbo, 2013-14. More Info
Notes: Includes Gasket. More Notes
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
$29.95
$23.18
$29.95
$23.18
Engine Coolant Thermostat
Part Number: 21210AA181
Positions: Lower
Other Names: Thermostat, Thermostat And Gasket Ay, More Names
Replaces: 21210AA180
Description: Forester. BRZ. Lower. Incl.Gasket. Engine Cooling. No.2 ( at water pump). 2.5L without turbo, 2011-13. More Info
Notes: Includes Gasket. More Notes
Fits:
  • Subaru:
    • BRZ,
    • Forester
$29.95
$23.18
$29.95
$23.18
Engine Coolant Thermostat
Part Number: 21200AA170
Other Names: Thermostat, Thermostat Cover Bolt, Thermostat Assembly, More Names
Description: Forester, Impreza. Thermostat. 2.5L, 2006-07. 2.5L without turbo, 2009-10. More Info
Notes: Included With Thermostat Unit. More Notes
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • Tribeca
$21.95
$16.99
$21.95
$16.99
Engine Coolant Thermostat
Part Number: 21210AA190
Positions: Upper, Rear
Other Names: Thermostat, Thermostat And Gasket Ay, More Names
Description: XV Crosstrek. Impreza. BRZ. Incl.Gasket. Transmission Cooling. Upper, auto trans only. No.1 (at rear of engine). More Info
Notes: Includes Gasket. More Notes
Fits:
  • Subaru:
    • Ascent,
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
  • 3 more
$29.95
$23.18
$29.95
$23.18
Engine Coolant Thermostat Housing
Part Number: 11060AA320
Other Names: Cover, Thermostat Housing, Cover Thermo, More Names
Description: BRZ. Block-Off Plate. Manual trans only. Transmission Cooling. More Info
Fits:
  • Subaru:
    • BRZ
$7.10
$5.50
$7.10
$5.50
Engine Coolant Thermostat Housing
Part Number: 11060AA360
Positions: Rear
Other Names: Thermostat Cover, Thermostat Housing, Cover Thermo, More Names
Description: Rear. Transmission Cooling. More Info
Fits:
  • Subaru:
    • Ascent,
    • Crosstrek,
    • Impreza
$16.92
$13.09
$16.92
$13.09
Engine Coolant Thermostat Housing
Part Number: 11060AA102
Other Names: Thermostat Cover, Thermostat Housing, Cover-Thermo, More Names
Description: Outback. 3.0L. More Info
Fits:
  • Subaru:
    • Outback
$27.63
$21.39
$27.63
$21.39
Engine Coolant Thermostat Gasket
Part Number: 21236AA100
Positions: Rear
Other Names: Gasket, Thermostat O-Ring, Thermostat Gasket, Gasket-Thermo, More Names
Description: Impreza. Rear. Transmission Cooling. More Info
Notes: Included With Thermostat. More Notes
Fits:
  • Subaru:
    • Ascent,
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
  • 3 more
$3.80
$2.94
$3.80
$2.94
Engine Coolant Thermostat Housing Bolt
Part Number: 808206040
Other Names: Thermostat Housing Bolt, Water Pump Bolt, Water Pipe Bolt, Water Manifold Bolt, Thermostat Cover Bolt, Engine Coolant Pipe Bolt,... More Names
Description: 2.5L. 3.6L. 2.0L. More Info
Notes: Included With Water Pipe. More Notes
Fits:
  • Subaru:
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX,
    • XV Crosstrek
  • 3 more
$1.94
$1.25
$1.94
$1.25
Engine Coolant Thermostat Housing Bolt
Part Number: 01040625A
Other Names: Thermostat Cover Bolt, Thermostat Bolt, Thermostat Housing Bolt, Cooling Pipe Bolt, Water Manifold Bolt, Water Pump Bolt, Water... More Names
Description: 3.6L. 2.0L. 2.5L, 2002-05. 2.5L, 2006-07. 2.5L without turbo, 2011-13. 2.5L without turbo, 2010-12. More Info
Notes: Included With Water Pipe. More Notes
Fits:
  • Subaru:
    • B9 Tribeca,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • Tribeca
  • 1 more
$0.76
$0.49
$0.76
$0.49
Thermostat
Part Number: 21200AA121
Other Names: More Names
Replaces: 21200AA050, 21200AA060, 21200AA100, 21200AA120, 317534302, 417537000, 417537300
Description: XT, sedan, coupe, wagon,hatchback. Loyale. Brat. 1.8l. All models. More Info
Fits:
  • Subaru:
    • Brat,
    • DL,
    • GL,
    • GL-10,
    • Justy,
    • Loyale,
    • RX,
    • Standard,
    • XT
  • 4 more
$21.95
$16.99
$21.95
$16.99
Thermostat
Part Number: 21200KA131
Other Names: More Names
Replaces: 21200KA130
Description: Justy. With fuel injection. More Info
Fits:
  • Subaru:
    • Justy
$21.95
$16.99
$21.95
$16.99
Thermostat
Part Number: 21210AA300
Other Names: More Names
Description: Crosstrek. More Info
Notes: Includes Gasket. More Notes
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza
$29.95
$23.18
$29.95
$23.18
Thermostat
Part Number: 21200AA080
Other Names: More Names
Description: XT coupe. Xt6. 2.7l. All models. More Info
Fits:
  • Subaru:
    • XT
$21.95
$16.99
$21.95
$16.99
Thermostat Cover
Part Number: 11054AA010
Other Names: Cover CP Thermo, More Names
Description: Auto trans. More Info
Fits:
  • Subaru:
    • Forester
$31.63
$24.48
$31.63
$24.48
Thermostat Housing
Part Number: 11060AA220
Other Names: Water Inlet, Cover Thermo, More Names
Description: Legacy. 2.5L with turbo. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
$32.17
$24.90
$32.17
$24.90
Thermostat Housing
Part Number: 417547100
Other Names: Cover Thermo, More Names
Description: Brat. Hatchback. All models. More Info
Fits:
  • Subaru:
    • Brat,
    • DL,
    • GL,
    • GL-10,
    • Justy,
    • RX,
    • Standard,
    • XT
  • 3 more
$17.57
$13.60
$17.57
$13.60
HVAC Evaporator Temperature Switch
Part Number: 73071AA030
Other Names: Thermostat Control, More Names
Fits:
  • Subaru:
    • Legacy
$74.88
$51.67
$74.88
$51.67
Thermistor
Part Number: 73540AC100
Other Names: Thermostat Ay, More Names
Notes: Included With Evaporator Assembly. More Notes
Fits:
  • Subaru:
    • Legacy
$61.75
$42.61
$61.75
$42.61
Thermistor
Part Number: 73540SA020
Other Names: Thermostat Cooling, More Names
Description: Manual control, from 2-1-05. More Info
Notes: Included With Evaporator Assembly. More Notes
Fits:
  • Subaru:
    • Forester
$83.58
$57.17
$83.58
$57.17
Gasket
Part Number: 21236AA010
Other Names: Thermostat Gasket, Engine Coolant Thermostat Gasket, Thermostat Housing Gasket, Thermostat Unit Gasket, Thermostat Cover Gasket,... More Names
Replaces: 21236AA000
Description: Legacy/Outback. Forester. Tribeca. WRX STI. Impreza. 3.0L. 2.0L. 3.6L. 2008-14. 2.5L, 2005. 2.5L, 2002-05. 2.5L, 2006-07. 2.5L without... More Info
Notes: Included With Thermostat Unit. Included With Repair Kit. More Notes
Fits:
  • Subaru:
    • B9 Tribeca,
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • SVX,
    • Tribeca,
    • WRX STI
  • 4 more
$3.52
$2.72
$3.52
$2.72
HVAC Evaporator Temperature Switch
Part Number: 73540FL500
Other Names: Thermostat Ay Cooling, More Names
Fits:
  • Subaru:
    • Crosstrek
$46.00
$31.74
$46.00
$31.74
Gasket
Part Number: 21236AA050
Other Names: Thermostat Gasket, Engine Coolant Thermostat Gasket, Gasket Thermo, More Names
Description: Legacy/Outback. XV Crosstrek. Forester. Impreza. Engine Cooling. 2.5L without turbo, 2011-13. More Info
Notes: Included With Thermostat. Part Is Not Reuseable, Replace Only. More Notes
Fits:
  • Subaru:
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
  • 2 more
$3.82
$2.95
$3.82
$2.95
Thermostat Cover
Part Number: 11060AA390
Positions: Upper
Other Names: Cover-Thermo, More Names
Description: Upper. More Info
Fits:
  • Subaru:
    • Forester
$16.90
$13.08
$16.90
$13.08
Water Pump Bolt
Part Number: 808206210
Other Names: Thermostat Housing Bolt, Water Pipe Bolt, Thermostat Cover Bolt, Bolt 6X25X18, More Names
Description: 2.5L without turbo, 2013-14. More Info
Fits:
  • Subaru:
    • Ascent,
    • Impreza,
    • Legacy,
    • Outback
$0.92
$0.59
$0.92
$0.59
Cover O-Ring
Part Number: 806929050
Other Names: Engine Coolant Thermostat Gasket, Engine Coolant Thermostat O-Ring, O Ring 29.7X3.5, More Names
Description: Block-Off Plate. Transmission Cooling. More Info
Fits:
  • Subaru:
    • BRZ
$1.78
$1.38
$1.78
$1.38
Thermostat Housing
Part Number: 11060AA290
Positions: Upper
Other Names: Cover Thermo, More Names
Description: BRZ. Upper, auto trans only. More Info
Fits:
  • Subaru:
    • BRZ
$16.90
$13.08
$16.90
$13.08
Thermostat Gasket
Part Number: 21236AA070
Positions: Front
Other Names: Gasket, Gasket Thermo, More Names
Description: Crosstrek. Forester. WRX. 2.0L. Front. With turbo. More Info
Notes: Included With Thermostat. Part Is Not Reuseable, Replace Only. More Notes
Fits:
  • Subaru:
    • Ascent,
    • Crosstrek,
    • Forester,
    • Impreza,
    • WRX
$3.80
$2.94
$3.80
$2.94
Thermostat Housing
Part Number: 417545900
Other Names: Cover Thermo, More Names
Description: Justy. All models. Without fuel injection. More Info
Fits:
  • Subaru:
    • Justy
$16.30
$12.62
$16.30
$12.62
Temp Sending Unit
Part Number: 21203AA000
Other Names: Engine Coolant Temperature Sender, Thermostat Guage Ay, More Names
Replaces: 820804150
Description: Xt6, XT, sedan,coupe, wagon. Loyale, XT coupe. All models. More Info
Fits:
  • Subaru:
    • DL,
    • GL,
    • GL-10,
    • Loyale,
    • RX,
    • XT
  • 1 more
$34.37
$23.71
$34.37
$23.71
Pulley Bolt
Part Number: 800606980
Other Names: Thermostat Housing Bolt, Engine Water Pump Pulley Bolt, Bolt 6X12X12, More Names
Description: 2.0L. 2.5L without turbo, 2013-14. 2.5L without turbo, 2011-13. More Info
Fits:
  • Subaru:
    • Ascent,
    • BRZ,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX,
    • XV Crosstrek
  • 4 more
$0.60
$0.39
$0.60
$0.39

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