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Autotecnica GM0718508 Engine Coolant Thermostat Housing - UpperOE Quality 60-Day Returns
Part #: GM0718508

Autotecnica GM0718508 Engine Coolant Thermostat Housing - Upper

Upper
225 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, and Saab, 9-7x, Ascender, Avalanche 1500, Camaro, Corvette, CTS, Envoy, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, Firebird, G8, GTO, H2, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD, SSR, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Trailblazer EXT, Yukon, Yukon XL 1500, and Yukon XL 2500
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Not what you need? See all Engine Coolant Thermostat Housing options

Engine Coolant Thermostat Housing

Restore proper coolant flow with this Autotecnica engine coolant thermostat housing, part number GM0718508. Built for upper cooling-system applications on a wide range of Chevrolet, GMC, Cadillac, Pontiac, Hummer, Isuzu, and Saab vehicles, it is a direct-fit housing-only replacement for service work where the original housing is cracked, warped, or leaking.

Autotecnica manufactures aftermarket cooling components to ISO/TS 16949 QMS specifications, giving technicians and DIY owners an OE-style replacement option for GM truck and car platforms. This GM0718508 thermostat housing is made from A384 material with a silver finish and an EPDM gasket material specification.

Key Features

  • Engine coolant thermostat housing for upper cooling-system service
  • Autotecnica part number GM0718508
  • A384 material with silver finish
  • One outlet port with 1.43 in. outlet diameter
  • 2 mounting holes and 6 bolt holes
  • EPDM gasket material specification
  • Thermostat not included
  • Gasket or seal not included
  • No air vent (bleeder valve) included

Detailed Description

This thermostat housing is engineered for vehicles such as the Chevrolet Silverado 1500, Chevrolet Tahoe, GMC Sierra 1500, Cadillac Escalade, Pontiac GTO, and related GM applications listed below. It serves as the upper housing only, making it a practical replacement when the original coolant outlet or housing body is damaged but the thermostat assembly is being reused or serviced separately. The housing is specified with a 179.6 deg F temperature rating, a 1.991 in. center bore diameter, and a 16.91 in. flange diameter for application-specific fitment.

This part cross-references Dorman OE Solutions 902-836 for the same application.

Vehicle Fitment

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

Installation Notes and Tips

Confirm the upper housing location, outlet port diameter, bolt-hole layout, and center bore before installation. Because the thermostat is not included, inspect the existing thermostat, gasket surface, and coolant passages during service. Replace any worn sealing components and clean the mating surfaces thoroughly to help prevent seepage after reassembly.

Quality Assurance

Autotecnica manufactures replacement parts in accordance with ISO/TS 16949 QMS specifications, supporting consistent fit and material control for cooling-system repairs. GM0718508 is positioned as an OE-style aftermarket alternative for technicians servicing Chevrolet Silverado, GMC Sierra, and other GM upper thermostat housing applications.

BrandAutotecnica
Part NumberGM0718508
MaterialA384
ColorSilver
Outlet Port Diameter1.43
Gasket Or Seal IncludedNo
Mounting Hole Quantity2
Flange Thickness0.139
Air Vent (Bleeder Valve) IncludedNo
Base Width (In)1.941
Bolt Hole Diameter (In)0.349
Center Bore Diameter (In)1.991
Flange Diameter (In)16.91
Flange Length (In)86.22
Flange Width (In)0
Gasket MaterialEpdm
Hardware IncludedNo
Housing Neck Angle (Deg)0
Number Of Bolt Holes6
Number Of Outlet Ports1
Temperature (Deg F)179.6
Thermostat IncludedNo

This part fits 225 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009ChevroletSilverado 25005.3LV8UpperHousing Only
2009PontiacG86.0LV8UpperHousing Only
2008ChevroletCorvette7.0LV8UpperHousing Only
2008ChevroletSilverado 25005.3LV8UpperHousing Only
2008GMCSierra5.3LV8UpperHousing Only
2008PontiacG86.0LV8UpperHousing Only
2007BuickRainier5.3LV8UpperHousing Only
2007CadillacCTS6.0LV8UpperHousing Only
2007ChevroletCorvette6.0LV8UpperHousing Only
2007ChevroletSilverado 1500 Classic6.0LV8UpperHousing Only
2007ChevroletSilverado 1500 HD Classic6.0LV8UpperHousing Only
2007ChevroletSilverado 25005.3LV8UpperHousing Only
2007ChevroletSilverado 2500 HD Classic6.0LV8UpperHousing Only
2007ChevroletSilverado 3500 Classic6.0LV8UpperHousing Only
2007ChevroletSilverado 3500 HD6.0LV8UpperHousing Only
2007GMCSierra5.3LV8UpperHousing Only
2007GMCSierra 1500 Classic6.0LV8UpperHousing Only
2007GMCSierra 1500 HD Classic6.0LV8UpperHousing Only
2007GMCSierra 2500 HD Classic6.0LV8UpperHousing Only
2007GMCSierra 3500 Classic6.0LV8UpperHousing Only
2006BuickRainier5.3LV8UpperHousing Only
2006CadillacCTS6.0LV8UpperHousing Only
2006CadillacEscalade6.0LV8UpperHousing Only
2006CadillacEscalade ESV6.0LV8UpperHousing Only
2006CadillacEscalade EXT6.0LV8UpperHousing Only
2006ChevroletAvalanche 15005.3LV8UpperHousing Only
2006ChevroletCorvette6.0LV8UpperHousing Only
2006ChevroletExpress 15005.3LV8UpperHousing Only
2006ChevroletExpress 25006.0LV8UpperHousing Only
2006ChevroletExpress 35006.0LV8UpperHousing Only
2006ChevroletSilverado 15006.0LV8UpperHousing Only
2006ChevroletSilverado 1500 HD6.0LV8UpperHousing Only
2006ChevroletSilverado 25004.8LV8UpperHousing Only
2006ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2006ChevroletSilverado 35006.0LV8UpperHousing Only
2006ChevroletSSR6.0LV8UpperHousing Only
2006ChevroletSuburban 15005.3LV8UpperHousing Only
2006ChevroletSuburban 25006.0LV8UpperHousing Only
2006ChevroletTahoe4.8LV8UpperHousing Only
2006ChevroletTrailblazer5.3LV8UpperHousing Only
2006ChevroletTrailblazer EXT5.3LV8UpperHousing Only
2006GMCEnvoy5.3LV8UpperHousing Only
2006GMCEnvoy XL5.3LV8UpperHousing Only
2006GMCSavana 15005.3LV8UpperHousing Only
2006GMCSavana 25006.0LV8UpperHousing Only
2006GMCSavana 35006.0LV8UpperHousing Only
2006GMCSierra 15006.0LV8UpperHousing Only
2006GMCSierra 1500 HD6.0LV8UpperHousing Only
2006GMCSierra 2500 HD6.0LV8UpperHousing Only
2006GMCSierra 35006.0LV8UpperHousing Only
2006GMCYukon4.8LV8UpperHousing Only
2006GMCYukon XL 15005.3LV8UpperHousing Only
2006GMCYukon XL 25006.0LV8UpperHousing Only
2006HummerH26.0LV8UpperHousing Only
2006IsuzuAscender5.3LV8UpperHousing Only
2006PontiacGTO6.0LV8UpperHousing Only
2006Saab9-7x5.3LV8UpperHousing Only
2005BuickRainier5.3LV8UpperHousing Only
2005CadillacCTS5.7LV8UpperHousing Only
2005CadillacEscalade6.0LV8UpperHousing Only
2005CadillacEscalade ESV6.0LV8UpperHousing Only
2005CadillacEscalade EXT6.0LV8UpperHousing Only
2005ChevroletAvalanche 15005.3LV8UpperHousing Only
2005ChevroletCorvette6.0LV8UpperHousing Only
2005ChevroletExpress 15005.3LV8UpperHousing Only
2005ChevroletExpress 25004.8LV8UpperHousing Only
2005ChevroletExpress 35004.8LV8UpperHousing Only
2005ChevroletSilverado 15004.8LV8UpperHousing Only
2005ChevroletSilverado 1500 HD6.0LV8UpperHousing Only
2005ChevroletSilverado 25005.3LV8UpperHousing Only
2005ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2005ChevroletSilverado 35006.0LV8UpperHousing Only
2005ChevroletSSR6.0LV8UpperHousing Only
2005ChevroletSuburban 15005.3LV8UpperHousing Only
2005ChevroletSuburban 25006.0LV8UpperHousing Only
2005ChevroletTahoe4.8LV8UpperHousing Only
2005ChevroletTrailblazer EXT5.3LV8UpperHousing Only
2005GMCEnvoy5.3LV8UpperHousing Only
2005GMCEnvoy XL5.3LV8UpperHousing Only
2005GMCEnvoy XUV5.3LV8UpperHousing Only
2005GMCSavana 15005.3LV8UpperHousing Only
2005GMCSavana 25004.8LV8UpperHousing Only
2005GMCSavana 35004.8LV8UpperHousing Only
2005GMCSierra 15004.8LV8UpperHousing Only
2005GMCSierra 1500 HD6.0LV8UpperHousing Only
2005GMCSierra 2500 HD6.0LV8UpperHousing Only
2005GMCSierra 35006.0LV8UpperHousing Only
2005GMCYukon4.8LV8UpperHousing Only
2005GMCYukon XL 15005.3LV8UpperHousing Only
2005GMCYukon XL 25006.0LV8UpperHousing Only
2005HummerH26.0LV8UpperHousing Only
2005IsuzuAscender5.3LV8UpperHousing Only
2005PontiacGTO6.0LV8UpperHousing Only
2005Saab9-7x5.3LV8UpperHousing Only
2004BuickRainier5.3LV8UpperHousing Only
2004CadillacCTS5.7LV8UpperHousing Only
2004CadillacEscalade6.0LV8UpperHousing Only
2004CadillacEscalade ESV6.0LV8UpperHousing Only
2004CadillacEscalade EXT6.0LV8UpperHousing Only
2004ChevroletAvalanche 15005.3LV8UpperHousing Only
2004ChevroletCorvette5.7LV8UpperHousing Only
2004ChevroletExpress 15005.3LV8UpperHousing Only
2004ChevroletExpress 25006.0LV8UpperHousing Only
2004ChevroletExpress 35006.0LV8UpperHousing Only
2004ChevroletSilverado 15006.0LV8UpperHousing Only
2004ChevroletSilverado 25006.0LV8UpperHousing Only
2004ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2004ChevroletSilverado 35006.0LV8UpperHousing Only
2004ChevroletSSR5.3LV8UpperHousing Only
2004ChevroletSuburban 15005.3LV8UpperHousing Only
2004ChevroletSuburban 25006.0LV8UpperHousing Only
2004ChevroletTahoe4.8LV8UpperHousing Only
2004ChevroletTrailblazer EXT5.3LV8UpperHousing Only
2004GMCEnvoy XL5.3LV8UpperHousing Only
2004GMCEnvoy XUV5.3LV8UpperHousing Only
2004GMCSavana 15005.3LV8UpperHousing Only
2004GMCSavana 25006.0LV8UpperHousing Only
2004GMCSavana 35006.0LV8UpperHousing Only
2004GMCSierra 15006.0LV8UpperHousing Only
2004GMCSierra 25006.0LV8UpperHousing Only
2004GMCSierra 2500 HD6.0LV8UpperHousing Only
2004GMCSierra 35006.0LV8UpperHousing Only
2004GMCYukon6.0LV8UpperHousing Only
2004GMCYukon XL 15006.0LV8UpperHousing Only
2004GMCYukon XL 25006.0LV8UpperHousing Only
2004HummerH26.0LV8UpperHousing Only
2004IsuzuAscender5.3LV8UpperHousing Only
2004PontiacGTO5.7LV8UpperHousing Only
2003CadillacEscalade6.0LV8UpperHousing Only
2003CadillacEscalade ESV6.0LV8UpperHousing Only
2003CadillacEscalade EXT6.0LV8UpperHousing Only
2003ChevroletAvalanche 15005.3LV8UpperHousing Only
2003ChevroletCorvette5.7LV8UpperHousing Only
2003ChevroletExpress 15005.3LV8UpperHousing Only
2003ChevroletExpress 25006.0LV8UpperHousing Only
2003ChevroletExpress 35006.0LV8UpperHousing Only
2003ChevroletSilverado 15005.3LV8UpperHousing Only
2003ChevroletSilverado 1500 HD6.0LV8UpperHousing Only
2003ChevroletSilverado 25006.0LV8UpperHousing Only
2003ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2003ChevroletSilverado 35006.0LV8UpperHousing Only
2003ChevroletSSR5.3LV8UpperHousing Only
2003ChevroletSuburban 15005.3LV8UpperHousing Only
2003ChevroletSuburban 25006.0LV8UpperHousing Only
2003ChevroletTahoe4.8LV8UpperHousing Only
2003ChevroletTrailblazer EXT5.3LV8UpperHousing Only
2003GMCEnvoy XL5.3LV8UpperHousing Only
2003GMCSavana 15005.3LV8UpperHousing Only
2003GMCSavana 25004.8LV8UpperHousing Only
2003GMCSavana 35004.8LV8UpperHousing Only
2003GMCSierra 15004.8LV8UpperHousing Only
2003GMCSierra 1500 HD6.0LV8UpperHousing Only
2003GMCSierra 25006.0LV8UpperHousing Only
2003GMCSierra 2500 HD6.0LV8UpperHousing Only
2003GMCSierra 35006.0LV8UpperHousing Only
2003GMCYukon5.3LV8UpperHousing Only
2003GMCYukon XL 15005.3LV8UpperHousing Only
2003GMCYukon XL 25006.0LV8UpperHousing Only
2003HummerH26.0LV8UpperHousing Only
2003IsuzuAscender5.3LV8UpperHousing Only
2002CadillacEscalade6.0LV8UpperHousing Only
2002CadillacEscalade EXT6.0LV8UpperHousing Only
2002ChevroletAvalanche 15005.3LV8UpperHousing Only
2002ChevroletCamaro5.7LV8UpperHousing Only
2002ChevroletCorvette5.7LV8UpperHousing Only
2002ChevroletSilverado 15005.3LV8UpperHousing Only
2002ChevroletSilverado 1500 HD6.0LV8UpperHousing Only
2002ChevroletSilverado 25006.0LV8UpperHousing Only
2002ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2002ChevroletSilverado 35006.0LV8UpperHousing Only
2002ChevroletSuburban 15005.3LV8UpperHousing Only
2002ChevroletSuburban 25006.0LV8UpperHousing Only
2002ChevroletTahoe4.8LV8UpperHousing Only
2002GMCSierra 15004.8LV8UpperHousing Only
2002GMCSierra 1500 HD6.0LV8UpperHousing Only
2002GMCSierra 25006.0LV8UpperHousing Only
2002GMCSierra 2500 HD6.0LV8UpperHousing Only
2002GMCSierra 35006.0LV8UpperHousing Only
2002GMCYukon5.3LV8UpperHousing Only
2002GMCYukon XL 15005.3LV8UpperHousing Only
2002GMCYukon XL 25006.0LV8UpperHousing Only
2002PontiacFirebird5.7LV8N/AHousing Only
2001ChevroletCamaro5.7LV8UpperHousing Only
2001ChevroletCorvette5.7LV8UpperHousing Only
2001ChevroletSilverado 15005.3LV8UpperHousing Only
2001ChevroletSilverado 1500 HD6.0LV8UpperHousing Only
2001ChevroletSilverado 25006.0LV8UpperHousing Only
2001ChevroletSilverado 2500 HD6.0LV8UpperHousing Only
2001ChevroletSilverado 35006.0LV8UpperHousing Only
2001ChevroletSuburban 15005.3LV8UpperHousing Only
2001ChevroletSuburban 25006.0LV8UpperHousing Only
2001ChevroletTahoe4.8LV8UpperHousing Only
2001GMCSierra 15004.8LV8UpperHousing Only
2001GMCSierra 1500 HD6.0LV8UpperHousing Only
2001GMCSierra 25006.0LV8UpperHousing Only
2001GMCSierra 2500 HD6.0LV8UpperHousing Only
2001GMCSierra 35006.0LV8UpperHousing Only
2001GMCYukon5.3LV8UpperHousing Only
2001GMCYukon XL 15005.3LV8UpperHousing Only
2001GMCYukon XL 25006.0LV8UpperHousing Only
2001PontiacFirebird5.7LV8N/AHousing Only
2000ChevroletCamaro5.7LV8UpperHousing Only
2000ChevroletCorvette5.7LV8UpperHousing Only
2000ChevroletSilverado 15005.3LV8UpperHousing Only
2000ChevroletSilverado 25006.0LV8UpperHousing Only
2000ChevroletSuburban 15005.3LV8UpperHousing Only
2000ChevroletSuburban 25006.0LV8UpperHousing Only
2000ChevroletTahoe4.8LV8UpperHousing Only
2000GMCSierra 15004.8LV8UpperHousing Only
2000GMCSierra 25006.0LV8UpperHousing Only
2000GMCYukon4.8LV8UpperHousing Only
2000GMCYukon XL 15005.3LV8UpperHousing Only
2000GMCYukon XL 25006.0LV8UpperHousing Only
2000PontiacFirebird5.7LV8N/AHousing Only
1999ChevroletCamaro5.7LV8UpperHousing Only
1999ChevroletCorvette5.7LV8UpperHousing Only
1999ChevroletSilverado 15005.3LV8UpperHousing Only
1999ChevroletSilverado 25005.3LV8UpperHousing Only
1999GMCSierra 15004.8LV8UpperHousing Only
1999GMCSierra 25006.0LV8UpperHousing Only
1999PontiacFirebird5.7LV8N/AHousing Only
1998ChevroletCamaro5.7LV8UpperHousing Only
1998ChevroletCorvette5.7LV8UpperHousing Only
1998PontiacFirebird5.7LV8N/AHousing Only
1997ChevroletCorvette5.7LV8UpperHousing Only

* 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:

12568911125815941260017215110578-12568-911-08-12581-594-08-12600-172-082415398508386220902-836CH2836CH5170CO34923GM0718508

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

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