Facet 7.8743S Engine Coolant Thermostat

Brand Facet 912009
Air Tube Qty None
Body Height (IN) 4
Body Length (IN) 10
Body Material Stainless Steel
Body Width (IN) 7.25
Executive Order D-280-101
Inlet Type A 2.25" ID Neck
Issued Company AirTek, Inc.
O2 Sensor Ports None
Outlet Type A 2.25" ID Neck
Overall Length (IN) 14
Shape Large Oval
Substrate Material Ceramic
Type CARB Compliant Universal
Fits —222 vehicles

Engine coolant thermostat. Regulates coolant flow to help maintain proper operating temperature.

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Engine Coolant Thermostat for Audi and Volkswagen

Facet 7.8743S is an engine coolant thermostat kit for select Audi and Volkswagen applications. It is used to regulate coolant flow so the engine reaches and maintains the proper operating temperature. This part number, 7.8743S, is listed for a wide range of turbocharged and non-turbocharged platform applications across the 2008-2016 model years.

Key Features

  • Engine coolant thermostat for temperature control in the cooling system
  • Facet part number 7.8743S
  • Compatible with select Audi A3, A4, A5, A6, Q3, Q5, TT, and allroad applications
  • Compatible with select Volkswagen Beetle, CC, Eos, GTI, Jetta, Passat, and Tiguan applications
  • Fitment includes applications where a gasket is included and applications where a gasket is not provided

Detailed Description

Facet 7.8743S is an engine coolant thermostat built for direct replacement in supported Audi and Volkswagen cooling systems. It helps control coolant circulation based on engine temperature, which is essential for stable warm-up and consistent operating temperature. This part number, 7.8743S, covers multiple model years of Audi A4, A4 Quattro, A5, A6, A6 Quattro, A3, A3 Quattro, Q3, Q5, TT, TT Quattro, and allroad, along with Volkswagen CC, Eos, Tiguan, GTI, Beetle, Jetta, and Passat applications.

This part cross-references no listed interchange numbers in the provided data.

What It Is Used For

  • Replacing a thermostat that is stuck open or stuck closed
  • Addressing slow engine warm-up or unstable coolant temperature
  • Correcting temperature-related warning lights tied to thermostat operation
  • Restoring proper coolant flow control in the engine cooling system
  • Supporting temperature regulation on Audi A4 and Volkswagen GTI, Jetta, and Tiguan applications

Installation Notes and Tips

Verify exact year, engine, and chassis fitment before installation. Some listed applications note that a gasket is included, while others note that a gasket is not provided, so confirm the vehicle-specific requirement before starting the repair. Clean the sealing surfaces thoroughly and inspect the cooling system for leaks, degraded hoses, or contaminated coolant during service.

Quality Assurance

Facet cooling components are built for replacement use in supported vehicle applications. Confirm the part number 7.8743S against the vehicle listing before installation to ensure the correct thermostat is selected for the application.

This part fits 222 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2016AudiA4Premium———N/AEngine coolant thermostat kit with gasket included.
2016AudiA4Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2016AudiA4 QuattroPremium Plus2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2016AudiA4 QuattroPremium2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2016AudiA4 QuattroPremium Plus2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2016AudiA4 QuattroPremium2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2016AudiA5 QuattroPremium Plus2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2016AudiA5 QuattroPremium2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2016AudiA5 QuattroPremium Plus2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2016AudiA5 QuattroPremium2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2016AudiallroadPremium———N/AEngine coolant thermostat kit with gasket included.
2016AudiallroadPremium Plus———N/AEngine coolant thermostat kit with gasket included.
2016AudiQ3Premium Plus———N/AGasket not provided.
2016AudiQ3Prestige———N/AGasket not provided.
2016AudiQ3 QuattroPremium Plus———N/AGasket not provided.
2016AudiQ3 QuattroPrestige———N/AGasket not provided.
2016AudiQ5Premium———N/AGasket not provided.
2016AudiQ5Hybrid Prestige———N/AGasket not provided.
2016AudiQ5Premium Plus2.0LL4—N/AGasket not provided.
2016VolkswagenCCR-Line Executive2.0LL4—N/AGasket not provided.
2016VolkswagenCCR-Line2.0LL4—N/AGasket not provided.
2016VolkswagenCCTrend2.0LL4—N/AGasket not provided.
2016VolkswagenCCSport2.0LL4—N/AGasket not provided.
2016VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2016VolkswagenTiguanR-Line2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2016VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2016VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2016VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2015AudiA4Premium———N/AEngine coolant thermostat kit with gasket included.
2015AudiA4Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2015AudiA4Prestige———N/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPremium2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPremium Plus2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPremium Plus2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPrestige2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPrestige2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA4 QuattroPremium2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPrestige2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPremium2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPremium Plus2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPrestige2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPremium Plus2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2015AudiA5 QuattroPremium2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2015AudiA6Premium———N/AEngine coolant thermostat kit with gasket included.
2015AudiA6Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2015AudiA6 QuattroPremium Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2015AudiA6 QuattroPremium———N/AEngine coolant thermostat kit with gasket included.
2015AudiallroadPremium———N/AEngine coolant thermostat kit with gasket included.
2015AudiallroadPrestige———N/AEngine coolant thermostat kit with gasket included.
2015AudiallroadPremium Plus———N/AEngine coolant thermostat kit with gasket included.
2015AudiQ3Prestige———N/AGasket not provided.
2015AudiQ3Premium Plus———N/AGasket not provided.
2015AudiQ3 QuattroPrestige———N/AGasket not provided.
2015AudiQ3 QuattroPremium Plus———N/AGasket not provided.
2015AudiQ5Hybrid Prestige———N/AGasket not provided.
2015AudiQ5Premium———N/AGasket not provided.
2015AudiQ5Premium Plus2.0LL4—N/AGasket not provided.
2015AudiTT QuattroBase———N/AGasket not provided.
2015VolkswagenCCR-Line2.0LL4—N/AGasket not provided.
2015VolkswagenCCSport2.0LL4—N/AGasket not provided.
2015VolkswagenCCExecutive2.0LL4—N/AGasket not provided.
2015VolkswagenEosFinal Edition2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenEosExecutive2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenTiguanR-Line———N/AEngine coolant thermostat kit with gasket included.
2015VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2014AudiA4Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2014AudiA4 QuattroBase2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2014AudiA4 QuattroBase2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2014AudiA5Cabriolet———N/AEngine coolant thermostat kit with gasket included.
2014AudiA5 QuattroCabriolet2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2014AudiA5 QuattroCabriolet2.0LL4FLEXN/AGasket not provided.
2014AudiA5 QuattroBase2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2014AudiA5 QuattroBase2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2014AudiA6Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2014AudiA6Premium———N/AEngine coolant thermostat kit with gasket included.
2014AudiA6 QuattroPremium Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2014AudiA6 QuattroPremium2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2014AudiallroadPremium———N/AEngine coolant thermostat kit with gasket included.
2014AudiallroadPrestige———N/AEngine coolant thermostat kit with gasket included.
2014AudiallroadPremium Plus———N/AEngine coolant thermostat kit with gasket included.
2014AudiQ5Premium Plus2.0LL4—N/AGasket not provided.
2014AudiQ5Premium———N/AGasket not provided.
2014AudiQ5Hybrid Prestige———N/AGasket not provided.
2014AudiTT QuattroBase———N/AGasket not provided.
2014VolkswagenCCR-Line2.0LL4—N/AGasket not provided.
2014VolkswagenCCExecutive2.0LL4—N/AGasket not provided.
2014VolkswagenCCSport2.0LL4—N/AGasket not provided.
2014VolkswagenEosSport2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenEosExecutive———N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenGTIDriver's Edition2.0LL4—N/AGasket not provided.
2014VolkswagenGTIWolfsburg Edition2.0LL4—N/AGasket not provided.
2014VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenTiguanR-Line———N/AEngine coolant thermostat kit with gasket included.
2014VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2013AudiA3Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013AudiA3 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2013AudiA4Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013AudiA4 QuattroBase2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2013AudiA4 QuattroBase2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2013AudiA5Cabriolet———N/AEngine coolant thermostat kit with gasket included.
2013AudiA5 QuattroCabriolet2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2013AudiA5 QuattroBase2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2013AudiA5 QuattroCabriolet2.0LL4GASN/AEngine coolant thermostat kit with gasket included.
2013AudiA5 QuattroBase2.0LL4FLEXN/AEngine coolant thermostat kit with gasket included.
2013AudiA6Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2013AudiA6Premium———N/AEngine coolant thermostat kit with gasket included.
2013AudiA6 QuattroPremium2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013AudiA6 QuattroPremium Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013AudiallroadPremium Plus———N/AEngine coolant thermostat kit with gasket included.
2013AudiallroadPrestige———N/AEngine coolant thermostat kit with gasket included.
2013AudiallroadPremium———N/AEngine coolant thermostat kit with gasket included.
2013AudiQ5Hybrid Prestige———N/AGasket not provided.
2013AudiQ5Premium Plus2.0LL4—N/AGasket not provided.
2013AudiQ5Premium———N/AGasket not provided.
2013AudiTT QuattroPremium Plus———N/AGasket not provided.
2013AudiTT QuattroPrestige———N/AGasket not provided.
2013VolkswagenBeetleTurbo2.0LL4—N/AGasket not provided.
2013VolkswagenCCSport Plus2.0LL4—N/AGasket not provided.
2013VolkswagenCCSport2.0LL4—N/AGasket not provided.
2013VolkswagenCCR-Line2.0LL4—N/AGasket not provided.
2013VolkswagenCCLux2.0LL4—N/AGasket not provided.
2013VolkswagenEosSport2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenEosExecutive2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenEosLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2013VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2013VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2012AudiA3Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012AudiA3 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2012AudiA4Base———N/AEngine coolant thermostat kit with gasket included.
2012AudiA4 QuattroAvant———N/AEngine coolant thermostat kit with gasket included.
2012AudiA4 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2012AudiA5Cabriolet———N/AEngine coolant thermostat kit with gasket included.
2012AudiA5 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2012AudiA5 QuattroCabriolet———N/AEngine coolant thermostat kit with gasket included.
2012AudiA6Premium Plus———N/AEngine coolant thermostat kit with gasket included.
2012AudiA6Premium———N/AEngine coolant thermostat kit with gasket included.
2012AudiQ5Premium Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012AudiQ5Premium———N/AEngine coolant thermostat kit with gasket included.
2012AudiTT QuattroPrestige———N/AGasket not provided.
2012AudiTT QuattroPremium Plus———N/AGasket not provided.
2012VolkswagenBeetleTurbo2.0LL4—N/AGasket not provided.
2012VolkswagenCCLux Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenCCR-Line2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenCCLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenCCSport2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenCCLux Limited2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenEosExecutive2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenEosLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2012VolkswagenJettaGLI2.0LL4—N/AFits vehicles up to 05/31/2012, includes gasket.
2012VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2012VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2011AudiA3Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011AudiA3 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2011AudiA4Base———N/AEngine coolant thermostat kit with gasket included.
2011AudiA4 QuattroAvant———N/AEngine coolant thermostat kit with gasket included.
2011AudiA4 QuattroBase2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011AudiQ5Premium Plus2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011AudiQ5Premium———N/AEngine coolant thermostat kit with gasket included.
2011AudiTT QuattroBase———N/AGasket not provided.
2011VolkswagenCCR-Line2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenCCLuxury2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenCCSport2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenEosLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2011VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2011VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2010AudiA3Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010AudiA3 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2010AudiA4Base———N/AEngine coolant thermostat kit with gasket included.
2010AudiA4 QuattroAvant———N/AEngine coolant thermostat kit with gasket included.
2010AudiA4 QuattroBase———N/AEngine coolant thermostat kit with gasket included.
2010AudiTT QuattroBase———N/AGasket not provided.
2010VolkswagenCCSport2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenCCLuxury2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenEosLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2010VolkswagenJettaWolfsburg Edition2.0LL4—N/AGasket not provided.
2010VolkswagenPassatKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenTiguanWolfsburg Edition———N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2010VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2009AudiA3Base2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2009AudiA3 QuattroBase2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2009AudiA4Base———N/AEngine coolant thermostat kit with gasket included.
2009AudiA4 QuattroAvant———N/AEngine coolant thermostat kit with gasket included.
2009AudiA4 QuattroBase2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2009AudiTTBase2.0LL4—N/AGasket not provided.
2009AudiTT QuattroBase2.0LL4—N/AGasket not provided.
2009VolkswagenCCSport———N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenCCLuxury———N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenEosKomfort2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenEosLux2.0LL4—N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2009VolkswagenJettaSEL2.0LL4—N/AGasket not provided.
2009VolkswagenJettaGLI2.0LL4—N/AGasket not provided.
2009VolkswagenJettaWolfsburg Edition2.0LL4—N/AGasket not provided.
2009VolkswagenPassatKomfort———N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenTiguanSE———N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenTiguanSEL———N/AEngine coolant thermostat kit with gasket included.
2009VolkswagenTiguanS———N/AEngine coolant thermostat kit with gasket included.
2008AudiA3Base2.0LL4—N/AGasket not provided.
2008VolkswagenGTIBase2.0LL4—N/AGasket not provided.
2008VolkswagenJettaGLI2.0LL4—N/AGasket not provided.
2008VolkswagenJettaWolfsburg Edition2.0LL4—N/AGasket not provided.
2008VolkswagenPassatKomfort2.0LL4—N/AGasket not provided.
2008VolkswagenPassatLux2.0LL4—N/AGasket not provided.
2008VolkswagenPassatTurbo2.0LL4—N/AGasket not provided.