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Audi RS6 Thermostat

4 items

Upgrade your vehicle's thermostat with A-Premium's high-quality options. Choose reliability and durability for a smoother ride.

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Vemo V15-99-2058 Engine Coolant ThermostatVemo V15-99-2058 Engine Coolant Thermostat
VemoPart # V15-99-2058
Vemo V15-99-2058 Engine Coolant Thermostat
4.99 Reviews
$39.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2007 Volkswagen Touareg, 2005-2006 Audi A8 Quattro, 2004-2006 Audi A8 Quattro, 2004-2006 Volkswagen Phaeton, 2004-2004 Volkswagen Touareg, 2003-2004 Audi RS6, 2002-2003 Audi S6, 2001-2003 Audi S8, 2000-2004 Audi A6 Quattro, 2000-2003 Audi A8 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Audi RS6
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2058, 216187312, TX3487D, 5304487, 077121113C, 22687, VT22687, TX3482D, 
...View more
item #1001QPEK
Note
With seal
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Beck/Arnley 143-0709 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0709
Beck/Arnley 143-0709 Engine Coolant Thermostat
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2006 Audi A8 Quattro, 2004-2009 Audi S4, 2004-2007 Volkswagen Touareg, 2004-2006 Volkswagen Phaeton, 2003-2005 Audi Allroad Quattro, 2003-2004 Audi RS6, 2002-2006 Audi A6 Quattro, 2002-2004 Audi A6 Quattro, 2002-2003 Audi S6, 2001-2003 Audi S8, 2001-2002 Audi Allroad Quattro, 2000-2002 Audi S4, 2000-2001 Audi A4, 1999-1999 Volkswagen Passat, 1999-1999 Volkswagen Passat, 1998-2004 Volkswagen Jetta, 1998-1999 Volkswagen Golf, 1998-1998 Volkswagen Passat, 1997-2004 Audi A8 Quattro, 1997-2001 Audi A4 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Audi RS6
Item LocatedUnited States
Quantity1
Part interchange
143-0709
item #1000XG5E
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Engine Coolant Thermostat - Mahle TX 34 82DSOLD OUT
MahlePart # TX 34 82D
Engine Coolant Thermostat - Mahle TX 34 82D
51 Reviews
$29.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2006 Audi A8 Quattro, 2004-2007 Volkswagen Touareg, 2004-2006 Volkswagen Phaeton, 2003-2004 Audi RS6, 2002-2003 Audi S6, 2001-2004 Audi A6 Quattro, 2001-2003 Audi S8, 2000-2004 Audi A8 Quattro, 2000-2000 Audi A6 Quattro, 1997-1999 Audi A8, 1997-1999 Audi A8 Quattro, 1995-1995 Audi 90, 1995-1995 Audi 90 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Audi RS6
Item LocatedUnited States
Quantity1
Part interchange
TX 34 82D, 33069, 48049, 304-192, TX3482D, 077 121 113 C, 077 121 113 D, 2.161.82.312
item #1000XRCK
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Engine Coolant Thermostat - Mahle TX 34 87DSOLD OUT
MahlePart # TX 34 87D
Engine Coolant Thermostat - Mahle TX 34 87D
51 Reviews
$31.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2006 Audi A8 Quattro, 2004-2007 Volkswagen Touareg, 2004-2006 Volkswagen Phaeton, 2003-2004 Audi RS6, 2002-2003 Audi S6, 2001-2004 Audi A6 Quattro, 2001-2003 Audi S8, 2000-2004 Audi A8 Quattro, 2000-2000 Audi A6 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Audi RS6
Item LocatedUnited States
Quantity1
Part interchange
TX 34 87D, 33069, TX3487D, 304-192, 077 121 113 D, 077 121 113 C, 077 121 113 B, 2.161.87.312
item #1000XRH3
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What is an engine thermostat?

 While all engines can become too hot, if your thermostat isn't working correctly, your engine's well-being is at serious risk. The engine thermostat, often simply referred to as a thermostat, regulates the engine's operating temperature within an optimal range (typically around 195 to 220 degrees Fahrenheit).

How does a car thermostat work?

As a temperature-sensitive valve within the cooling system, a car thermostat responds to changes in coolant temperature. Understanding how it works by the following breakdown steps:

  • Closed position (cold start)

Initially closed to help the engine warm up quickly.

  • Heating up

The engine generates heat during operation.

  • Opening the thermostat

A temperature-sensitive element (usually wax) causes the thermostat to open gradually.

  • Coolant flow

When open, coolant flows from the engine to the radiator.

  • Maintaining optimal temperature

Adjusts coolant flow to maintain the ideal engine temperature.

  • Temperature regulation

Continuously adjusts to prevent overheating and ensure efficient operation.

Signs of a bad thermostat

  1. Overheating: The engine becomes excessively hot due to a stuck-closed thermostat.
  2. Low or fluctuating temperature: A thermostat stuck open results in a cooler engine, affecting fuel efficiency and heating.
  3. Temperature warning light: Illuminates to indicate engine overheating due to a faulty thermostat.
  4. Poor fuel efficiency: Stuck-open thermostat reduces fuel efficiency as the engine operates less efficiently at lower temperatures.
  5. Inadequate cabin heating: Insufficient cabin heating in cold weather with a thermostat that's stuck open.
  6. Coolant leaks: Gasket or sealing issues can lead to coolant leaks.
  7. Rapid temperature fluctuations: The gauge shows rapid swings between hot and cold.
  8. Engine running hot at idle: Higher engine temperature during idle or in traffic due to restricted coolant flow.
  9. Slow or inconsistent warm-up: Longer-than-normal warm-up times, even in moderate weather.
  10. Inconsistent heater operation: This affects the performance of the vehicle's heater, causing inconsistent or inadequate heating in cold weather.

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Jul 29, 2026