Home› Belts and Cooling > Thermostat and Housing› Calorstat TH2105.71J Engine Coolant Thermostat
Calorstat TH2105.71J Engine Coolant ThermostatOE Quality 60-Day Returns
Part #: TH2105.71J

Calorstat TH2105.71J Engine Coolant Thermostat

178 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$30.97Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, and Saab, 9-7x, Allure, Ascender, Avalanche 1500, Camaro, Corvette, CTS, Envoy, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 3500, Firebird, G8, Grand Prix, GTO, H2, Impala, LaCrosse, Monte Carlo, Rainier, Savana 2500, Savana 3500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Silverado 2500, SSR, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Trailblazer EXT, Yukon, Yukon XL 1500, and Yukon XL 2500
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Engine Coolant Thermostat options

Engine Coolant Thermostat for GM Applications

Calorstat TH2105.71J is a standard engine coolant thermostat with a 160°F opening temperature for controlled coolant flow and stable operating temperature. It includes a gasket seal and is built for direct replacement service on a wide range of GM, Cadillac, Chevrolet, GMC, Pontiac, Saab, Hummer, Isuzu, and Buick applications.

  • Standard engine coolant thermostat design
  • Starts to open at 160°F / 71°C
  • Gasket included for sealing at installation
  • Rubber seal material
  • Sealing flange outside diameter: 2.12 in.
  • Height between flanges: 1.83 in.
  • Valve outside diameter: 1.22 in.

Fitment and Application Details

Fits 2008-2009 Buick Allure, N/A. Fits 2008-2009 Buick LaCrosse, N/A. Fits 2006-2009 Chevrolet Impala, N/A. Fits 1999-2009 Chevrolet Silverado 2500, N/A. Fits 2008-2009 Pontiac G8, N/A. Fits 1997-2008 Chevrolet Corvette, N/A. Fits 2005-2008 Pontiac Grand Prix, N/A. Fits 2005-2008 Saab 9-7x, N/A. Fits 2005-2007 Cadillac CTS, N/A. Fits 2006-2007 Chevrolet Monte Carlo, N/A. Fits 2004-2006 Buick Rainier, N/A. Fits 2002-2006 Cadillac Escalade, N/A. Fits 2003-2006 Cadillac Escalade ESV, N/A. Fits 2002-2006 Cadillac Escalade EXT, N/A. Fits 2002-2006 Chevrolet Avalanche 1500, N/A. Fits 2003-2006 Chevrolet Express 3500, N/A. Fits 2003-2006 Chevrolet SSR, N/A. Fits 2000-2006 Chevrolet Suburban 1500, N/A. Fits 2000-2006 Chevrolet Suburban 2500, N/A. Fits 2001-2006 Chevrolet Tahoe, N/A. Fits 2006 Chevrolet Trailblazer, N/A. Fits 2003-2006 Chevrolet Trailblazer EXT, N/A. Fits 2005-2006 GMC Envoy, N/A. Fits 2003-2006 GMC Envoy XL, N/A. Fits 2006 GMC Savana 2500, N/A. Fits 2003-2006 GMC Savana 3500, N/A. Fits 2005-2006 GMC Sierra 1500 HD, N/A. Fits 2001-2003 GMC Sierra 1500 HD, N/A. Fits 2001-2006 GMC Sierra 2500 HD, N/A. Fits 2001-2006 GMC Sierra 3500, N/A. Fits 2001-2006 GMC Yukon, N/A. Fits 2000-2006 GMC Yukon XL 1500, N/A. Fits 2000-2006 GMC Yukon XL 2500, N/A. Fits 2003-2006 Hummer H2, N/A. Fits 2003-2006 Isuzu Ascender, N/A. Fits 2004-2006 Pontiac GTO, N/A. Fits 2004-2005 GMC Envoy XUV, N/A. Fits 1999-2004 GMC Sierra 2500, N/A. Fits 1998-2002 Chevrolet Camaro, N/A. Fits 1998-2002 Pontiac Firebird, N/A.

What This Thermostat Helps Address

  • Engine running too cool or taking too long to reach operating temperature
  • Temperature fluctuation caused by a worn thermostat
  • Coolant flow control issues in the cooling system
  • Overheating concerns related to thermostat sticking
  • Leak points at the thermostat seal or housing interface

Installation Notes and Tips

Verify the thermostat opening temperature and dimensions against the original part before installation. Clean the sealing surfaces thoroughly, install the included gasket seal correctly, and refill the cooling system with the proper coolant mixture after service. This part cross-references Four Seasons 14946 and 456160 for the same application.

Quality Assurance

Calorstat TH2105.71J is specified as a standard replacement thermostat with confirmed fitment data for a broad range of GM-platform vehicles, including Chevrolet Silverado 2500, Chevrolet Corvette, and GMC Yukon applications. Use the listed vehicle coverage and dimensions to confirm application match before installation.

BrandCalorstat
Part NumberTH2105.71J
Sealing Flange Outside Diameter2.12
Height Between Flanges1.83
TypeStandard
Gasket Or Seal IncludedYes
Seal TypeGasket
Start to Open Temperature160.0
Seal MaterialRubber
98131.37
98411
98441
99070.32
Valve Outside Diameter1.22 in.

This part fits 178 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009BuickAllure5.3LV8N/AOpening Temp: 71 C / 160 F
2009BuickLaCrosse5.3LV8N/AOpening Temp: 71 C / 160 F
2009ChevroletImpala5.3LV8N/AOpening Temp: 71 C / 160 F
2009ChevroletSilverado 25005.3LV8N/AOpening Temp: 71 C / 160 F
2009PontiacG86.2LV8N/AOpening Temp: 71 C / 160 F
2008BuickAllure5.3LV8N/AOpening Temp: 71 C / 160 F
2008BuickLaCrosse5.3LV8N/AOpening Temp: 71 C / 160 F
2008ChevroletCorvette7.0LV8N/AOpening Temp: 71 C / 160 F
2008ChevroletImpala5.3LV8N/AOpening Temp: 71 C / 160 F
2008ChevroletSilverado 25005.3LV8N/AOpening Temp: 71 C / 160 F
2008PontiacG86.0LV8N/AOpening Temp: 71 C / 160 F
2008PontiacGrand Prix5.3LV8N/AOpening Temp: 71 C / 160 F
2008Saab9-7x6.0LV8N/AOpening Temp: 71 C / 160 F
2007CadillacCTS6.0LV8N/AOpening Temp: 71 C / 160 F
2007ChevroletCorvette7.0LV8N/AOpening Temp: 71 C / 160 F
2007ChevroletImpala5.3LV8N/AOpening Temp: 71 C / 160 F
2007ChevroletMonte Carlo5.3LV8N/AOpening Temp: 71 C / 160 F
2007ChevroletSilverado 25005.3LV8N/AOpening Temp: 71 C / 160 F
2007PontiacGrand Prix5.3LV8N/AOpening Temp: 71 C / 160 F
2007Saab9-7x5.3LV8N/AOpening Temp: 71 C / 160 F
2006BuickRainier5.3LV8N/AOpening Temp: 71 C / 160 F
2006CadillacCTS6.0LV8N/AOpening Temp: 71 C / 160 F
2006CadillacEscalade6.0LV8N/AOpening Temp: 71 C / 160 F
2006CadillacEscalade ESV6.0LV8N/AOpening Temp: 71 C / 160 F
2006CadillacEscalade EXT6.0LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletAvalanche 15005.3LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletCorvette7.0LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletExpress 35006.6LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletImpala5.3LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletMonte Carlo5.3LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletSilverado 25005.3LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletSSR6.0LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletSuburban 15006.0LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletTrailblazer6.0LV8N/AOpening Temp: 71 C / 160 F
2006ChevroletTrailblazer EXT5.3LV8N/AOpening Temp: 71 C / 160 F
2006GMCEnvoy5.3LV8N/AOpening Temp: 71 C / 160 F
2006GMCEnvoy XL5.3LV8N/AOpening Temp: 71 C / 160 F
2006GMCSavana 25006.6LV8N/AOpening Temp: 71 C / 160 F
2006GMCSavana 35006.6LV8N/AOpening Temp: 71 C / 160 F
2006GMCSierra 1500 HD6.0LV8N/AOpening Temp: 71 C / 160 F
2006GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2006GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2006GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2006GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2006GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2006HummerH26.0LV8N/AOpening Temp: 71 C / 160 F
2006IsuzuAscender5.3LV8N/AOpening Temp: 71 C / 160 F
2006PontiacGrand Prix5.3LV8N/AOpening Temp: 71 C / 160 F
2006PontiacGTO6.0LV8N/AOpening Temp: 71 C / 160 F
2006Saab9-7x5.3LV8N/AOpening Temp: 71 C / 160 F
2005BuickRainier5.3LV8N/AOpening Temp: 71 C / 160 F
2005CadillacCTS5.7LV8N/AOpening Temp: 71 C / 160 F
2005CadillacEscalade6.0LV8N/AOpening Temp: 71 C / 160 F
2005CadillacEscalade ESV6.0LV8N/AOpening Temp: 71 C / 160 F
2005CadillacEscalade EXT6.0LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletAvalanche 15005.3LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletCorvette6.0LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletExpress 35006.0LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletSilverado 25005.3LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletSSR6.0LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletSuburban 15005.3LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2005ChevroletTrailblazer EXT5.3LV8N/AOpening Temp: 71 C / 160 F
2005GMCEnvoy5.3LV8N/AOpening Temp: 71 C / 160 F
2005GMCEnvoy XL5.3LV8N/AOpening Temp: 71 C / 160 F
2005GMCEnvoy XUV5.3LV8N/AOpening Temp: 71 C / 160 F
2005GMCSavana 35006.0LV8N/AOpening Temp: 71 C / 160 F
2005GMCSierra 1500 HD6.0LV8N/AOpening Temp: 71 C / 160 F
2005GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2005GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2005GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2005GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2005GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2005HummerH26.0LV8N/AOpening Temp: 71 C / 160 F
2005IsuzuAscender5.3LV8N/AOpening Temp: 71 C / 160 F
2005PontiacGrand Prix5.3LV8N/AOpening Temp: 71 C / 160 F
2005PontiacGTO6.0LV8N/AOpening Temp: 71 C / 160 F
2005Saab9-7x5.3LV8N/AOpening Temp: 71 C / 160 F
2004BuickRainier5.3LV8N/AOpening Temp: 71 C / 160 F
2004CadillacEscalade6.0LV8N/AOpening Temp: 71 C / 160 F
2004CadillacEscalade ESV6.0LV8N/AOpening Temp: 71 C / 160 F
2004CadillacEscalade EXT6.0LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletAvalanche 15005.3LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletExpress 35006.0LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletSSR5.3LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletSuburban 15005.3LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2004ChevroletTrailblazer EXT5.3LV8N/AOpening Temp: 71 C / 160 F
2004GMCEnvoy XL5.3LV8N/AOpening Temp: 71 C / 160 F
2004GMCEnvoy XUV5.3LV8N/AOpening Temp: 71 C / 160 F
2004GMCSavana 35006.0LV8N/AOpening Temp: 71 C / 160 F
2004GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
2004GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2004GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2004GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2004GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2004GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2004HummerH26.0LV8N/AOpening Temp: 71 C / 160 F
2004IsuzuAscender5.3LV8N/AOpening Temp: 71 C / 160 F
2004PontiacGTO5.7LV8N/AOpening Temp: 71 C / 160 F
2003CadillacEscalade6.0LV8N/AOpening Temp: 71 C / 160 F
2003CadillacEscalade ESV6.0LV8N/AOpening Temp: 71 C / 160 F
2003CadillacEscalade EXT6.0LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletAvalanche 15005.3LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletExpress 35006.0LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletSSR5.3LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletSuburban 15005.3LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2003ChevroletTrailblazer EXT5.3LV8N/AOpening Temp: 71 C / 160 F
2003GMCEnvoy XL5.3LV8N/AOpening Temp: 71 C / 160 F
2003GMCSavana 35006.0LV8N/AOpening Temp: 71 C / 160 F
2003GMCSierra 1500 HD6.0LV8N/AOpening Temp: 71 C / 160 F
2003GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
2003GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2003GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2003GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2003GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2003GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2003HummerH26.0LV8N/AOpening Temp: 71 C / 160 F
2003IsuzuAscender5.3LV8N/AOpening Temp: 71 C / 160 F
2002CadillacEscalade6.0LV8N/AOpening Temp: 71 C / 160 F
2002CadillacEscalade EXT6.0LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletAvalanche 15005.3LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletCamaro5.7LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletSuburban 15005.7LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2002ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2002GMCSierra 1500 HD6.0LV8N/AOpening Temp: 71 C / 160 F
2002GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
2002GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2002GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2002GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2002GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2002GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2002PontiacFirebird5.7LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletCamaro5.7LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletSuburban 15005.7LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletSuburban 25008.1LV8N/AOpening Temp: 71 C / 160 F
2001ChevroletTahoe5.3LV8N/AOpening Temp: 71 C / 160 F
2001GMCSierra 1500 HD6.0LV8N/AOpening Temp: 71 C / 160 F
2001GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
2001GMCSierra 2500 HD8.1LV8N/AOpening Temp: 71 C / 160 F
2001GMCSierra 35008.1LV8N/AOpening Temp: 71 C / 160 F
2001GMCYukon6.0LV8N/AOpening Temp: 71 C / 160 F
2001GMCYukon XL 15006.0LV8N/AOpening Temp: 71 C / 160 F
2001GMCYukon XL 25008.1LV8N/AOpening Temp: 71 C / 160 F
2001PontiacFirebird5.7LV8N/AOpening Temp: 71 C / 160 F
2000ChevroletCamaro5.7LV8N/AOpening Temp: 71 C / 160 F
2000ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
2000ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
2000ChevroletSuburban 15005.7LV8N/AOpening Temp: 71 C / 160 F
2000ChevroletSuburban 25006.0LV8N/AOpening Temp: 71 C / 160 F
2000GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
2000GMCYukon XL 15005.3LV8N/AOpening Temp: 71 C / 160 F
2000GMCYukon XL 25006.0LV8N/AOpening Temp: 71 C / 160 F
2000PontiacFirebird5.7LV8N/AOpening Temp: 71 C / 160 F
1999ChevroletCamaro5.7LV8N/AOpening Temp: 71 C / 160 F
1999ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
1999ChevroletSilverado 25006.0LV8N/AOpening Temp: 71 C / 160 F
1999GMCSierra 25006.0LV8N/AOpening Temp: 71 C / 160 F
1999PontiacFirebird5.7LV8N/AOpening Temp: 71 C / 160 F
1998ChevroletCamaro5.7LV8N/AOpening Temp: 71 C / 160 F
1998ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 F
1998PontiacFirebird5.7LV8N/AOpening Temp: 71 C / 160 F
1997ChevroletCorvette5.7LV8N/AOpening Temp: 71 C / 160 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:

14946456160

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Related Articles