• Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, valve and gasket detail
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, housing and mounting detail
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, valve and gasket detail; repeated source photo 3
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, housing and mounting detail; repeated source photo 4
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, valve and gasket detail; repeated source photo 5
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, housing and mounting detail; repeated source photo 6
  • Genuine VW/Audi 06E-121-111-AL 3.0T coolant thermostat assembly, valve and gasket detail; repeated source photo 7
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Genuine VW/Audi

06E-121-111-AL Genuine VW/Audi Engine Coolant Thermostat Assembly

06E-121-111-AL Genuine VW/Audi Engine Coolant Thermostat Assembly

$134.99 USD
$134.99 USD
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06E-121-111-AL

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OVERVIEW

Restore proper coolant regulation with the 06E-121-111-AL Genuine VW/Audi engine coolant thermostat assembly for the listed supercharged 3.0L TFSI applications. The thermostat controls coolant circulation as the engine warms up and operating temperature changes. Correct regulation supports consistent engine temperature rather than allowing unrestricted flow or retaining heat when additional cooling is needed.

Technical details

  • Part number: 06E-121-111-AL / 06E121111AL.
  • Assembly: thermostat mechanism, housing and installation gasket. The source photos show the spring-loaded valve, housing connection and seven mounting positions.
  • Quantity: one thermostat assembly; coolant, water pump, pipes and other service seals are separate.
  • Installation: located beneath the supercharger on the documented 3.0T applications; access requires substantial disassembly.

Common reasons to replace

  • A thermostat that remains closed or does not open correctly after cooling-system diagnosis confirms restricted coolant circulation.
  • A thermostat that remains open and produces abnormally slow warm-up or temperature regulation problems.
  • A cracked housing or confirmed leakage at the thermostat assembly after inspecting nearby coolant pipes and seals.

Audi bulletin 2040491/4 addresses DTC P1B1C00 and a cooling-system warning. Its diagnostic procedure separates a thermostat fault from an ECM software issue: freeze-frame coolant temperature of at least 115°C calls for thermostat replacement and a software update, while a lower recorded temperature calls for software correction. That threshold is diagnostic information, not the thermostat opening temperature. A warning or code alone does not establish that this part has failed.

Service notes

Follow the current VIN-specific repair procedure, renew disturbed seals as specified, and inspect the coolant pipe connections before reassembly. Refill with the specified coolant, bleed the cooling system and check for leaks and stable operating temperature. Address an overheating condition before continuing to operate the vehicle.

Fitment

Vehicle Model years Engine Configuration Application restrictions
Audi A6 2012–2015 3.0L TFSI supercharged gasoline V6 Sedan; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi A7 2012–2016 3.0L TFSI supercharged gasoline V6 Sportback; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi A8 2013–2014 3.0L TFSI supercharged gasoline V6 Sedan; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi Q5 2013–2017 3.0L TFSI supercharged gasoline V6 SUV; 2016–2017 Premium Plus only in additional catalog confirmation; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi S4 2011–2012 3.0L TFSI supercharged gasoline V6 Sedan; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi S5 2010–2013 3.0L TFSI supercharged gasoline V6 Cabriolet only; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi Q7 2011–2012 3.0L TFSI supercharged gasoline V6 SUV; Verify VIN-specific installation Match installed thermostat and VIN; gasoline 3.0T only. Excludes diesel and 4.2L V8.
Audi SQ5 2014–2017 3.0L TFSI supercharged gasoline V6 8R; Premium Plus SUV; Match VIN-specific cooling assembly Confirm installed thermostat and VIN; specified gasoline engine and body/trim only. Excludes other engines.
Audi S5 2013 3.0L TFSI supercharged gasoline V6 B8; quattro Coupe; Match VIN-specific cooling assembly Confirm installed thermostat and VIN; specified gasoline engine and body/trim only. Excludes other engines.
Audi S5 2014–2016 3.0L TFSI supercharged gasoline V6 B8.5; Prestige quattro Coupe; Match VIN-specific cooling assembly Confirm installed thermostat and VIN; specified gasoline engine and body/trim only. Excludes other engines.

Match the installed thermostat and verify VIN-specific part applicability before ordering. Only the listed gasoline 3.0T applications apply; diesel engines and the S5 4.2L V8 coupe are excluded.

Technical references

Audi service bulletin 2040491/4; Audi 24AP/H6 thermostat replacement procedure.