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CalorstatPart #: TH6736.78J
Calorstat TH6736.78J Engine Coolant Thermostat
⚙️ 85 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Baja, Forester, Impreza, Legacy, Outback, WRX, and WRX STI
🔄Easy Returns — Return within 60 days for a full refund
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Calorstat TH6736.78J Engine Coolant Thermostat
| Brand | Calorstat |
| Part Number | TH6736.78J |
| Sealing Flange Outside Diameter | 2.2 |
| Height Between Flanges | 1.33 |
| Design | Off-set valve seat |
| Type | Standard |
| Gasket Or Seal Included | Yes |
| Seal Type | Gasket |
| Start to Open Temperature | 172.0 |
| Seal Material | Rubber |
| 9841 | 1 |
| 9844 | 1 |
| 9852 | 1 |
| 9943 | Yes |
This part fits 85 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2019 | Subaru | Legacy | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2019 | Subaru | Outback | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2019 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2018 | Subaru | Legacy | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2018 | Subaru | Outback | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2018 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2017 | Subaru | Legacy | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2017 | Subaru | Outback | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2017 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2016 | Subaru | Legacy | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2016 | Subaru | Outback | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2016 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2015 | Subaru | Legacy | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2015 | Subaru | Outback | 3.6L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2015 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2014 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2014 | Subaru | WRX | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2014 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2013 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2013 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2013 | Subaru | WRX | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2013 | Subaru | WRX STI | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2012 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2012 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2011 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2011 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2010 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2010 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2009 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2009 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2009 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2009 | Subaru | Outback | 2.5L | H4 | N/A | To 04/30/2009 |
| 2008 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2008 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2008 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2008 | Subaru | Outback | 2.5L | H4 | N/A | To 04/30/2008 |
| 2007 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2007 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2007 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2007 | Subaru | Outback | 2.5L | H4 | N/A | To 03/31/2007 |
| 2006 | Subaru | Baja | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2006 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2006 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2006 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2006 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2005 | Subaru | Baja | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2005 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2005 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2005 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2005 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2004 | Subaru | Baja | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2004 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2004 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2004 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2004 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2003 | Subaru | Baja | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2003 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2003 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2003 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2003 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2002 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2002 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2002 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2002 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2001 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2001 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2001 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2001 | Subaru | Outback | 3.0L | H6 | N/A | Opening Temp: 78 C / 172 F |
| 2000 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2000 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2000 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 2000 | Subaru | Outback | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1999 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1999 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1999 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1998 | Subaru | Forester | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1998 | Subaru | Impreza | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1998 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1997 | Subaru | Impreza | 2.2L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1997 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1996 | Subaru | Impreza | 2.2L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1996 | Subaru | Legacy | 2.5L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1995 | Subaru | Impreza | 2.2L | H4 | N/A | Opening Temp: 78 C / 172 F |
| 1995 | Subaru | Legacy | 2.2L | H4 | N/A | Opening Temp: 78 C / 172 F |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
141472094-17021200AA07021200AA07121200AA07221210AA030294-17033857340124614746457484575294-1707294-170
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.