2003 Audi A4 Quattro Thermostat and Water Outlet Assemblies

Your 2003 Audi A4 Quattro might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Thermostat and Water Outlet Assemblies you desperately need.

We currently carry 5 Thermostat and Water Outlet Assemblies to choose from for your 2003 Audi A4 Quattro, and our inventory prices range from as little as $44.99 up to $138.99.

On top of low prices, Advance Auto Parts offers 3 different trusted brands of Thermostat and Water Outlet Assemblies for the 2003 Audi A4 Quattro. We only sell parts from trusted brands like Dorman so that you can find quality parts you can count on.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Thermostat and Water Outlet Assemblies stock in-person!

Thermostat and Water Outlet Assemblies for Your 2003 Audi A4 Quattro

Dorman – Thermostat Assembly: Includes Complete Housing Assembly With Sensor, 212 Degrees (Part No.902-814)

Thermostat Assembly: Includes Complete Housing Assembly With Sensor, 212 Degrees

from

$138.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housing assemblies
See More

Motorad – Integrated Thermostat Housing: With Seal, 198 Degrees (Part No.914-198)

Integrated Thermostat Housing: With Seal, 198 Degrees

from

$64.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. This integrated thermostat housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant as well as the design and function of the housing. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Rein – Thermostat Assembly 100C (Part No.CTA0021)

Thermostat Assembly 100C

from

$112.99
Rein Automotive OE quality thermostat assemblies install, fit and perform the way the original manufacturer intended. These assemblies are designed to meet or exceed the OE materials used. Rein thermostat housings are constructed of metal or plastic based on vehicle specific factory requirements. The housings are constructed from molds cast directly from the OEM parts to meet the strict tolerances of the vehicle’s factory specifications. This ensures a smooth and easy installation, just as one would expect to find with OE quality. Rein thermostats are produced with high-quality metals and components to ensure proper durability and service life. The thermostats are temperature calibrated to have a consistent and precise response suiting cooling system needs. Our quality thermostat assemblies aim to provide the profession repair technician and vehicle owner the peace of mind and trust that is expected from an OE quality component.

Product Features:
  • Matches original equipment design specifications
  • Direct fitments allows easy installation
  • Manufactured to strict engineering standards/specifications in materials and tolerances
  • Thermostat set to 100 degrees Celsius to maintain optimal running temperature
See More

Dorman – Thermostat Assembly: Includes Housing, O-Ring, and Thermostat, 198 Degrees (Part No.902-5167)

Thermostat Assembly: Includes Housing, O-Ring, and Thermostat, 198 Degrees

from

$71.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housing assemblies
See More

Rein – OE Quality Thermostat Assembly (Part No.CTA0013)

OE Quality Thermostat Assembly

from

$44.99
Rein Automotive® OE quality thermostat assemblies install, fit and perform the way the original manufacturer intended. These assemblies are designed to meet or exceed the OE materials used. Rein thermostat housings are constructed of metal or plastic based on vehicle specific factory requirements. The housings are constructed from molds cast directly from the OEM parts to meet the strict tolerances of the vehicle’s factory specifications. This ensures a smooth and easy installation, just as one would expect to find with OE quality. Rein thermostats are produced with high-quality metals and components to ensure proper durability and service life. The thermostats are temperature calibrated to have a consistent and precise response suiting cooling system needs. Our quality thermostat assemblies aim to provide the profession repair technician and vehicle owner the peace of mind and trust that is expected from an OE quality component.

Product Features:
  • Matches original equipment design specifications
  • Direct fitments allows easy installation
  • Manufactured to strict engineering standards/specifications in materials and tolerances
  • Thermostat set to 92 degrees Celsius to maintain optimal running temperature
See More

FAQs for 2003 Audi A4 Quattro Thermostat and Water Outlet Assemblies

What are the most popular Thermostat and Water Outlet Assemblies for the 2003 Audi A4 Quattro?

With 3 brands you can trust, our most popular Thermostat and Water Outlet Assemblies for the 2003 Audi A4 Quattro parts are:
Thermostat Assembly: Includes Complete Housing Assembly With Sensor, 212 Degrees
from $138.99
This product is not rated
Thermostat Assembly: Includes Complete Housing Assembly With Sensor, 212 Degrees
Thermostat and Water Outlet Assemblies
Integrated Thermostat Housing: With Seal, 198 Degrees
from $64.99
This product is not rated
Integrated Thermostat Housing: With Seal, 198 Degrees
Thermostat and Water Outlet Assemblies
Thermostat Assembly: Includes Housing, O-Ring, and Thermostat, 198 Degrees
from $71.99
This product is not rated
Thermostat Assembly: Includes Housing, O-Ring, and Thermostat, 198 Degrees
Thermostat and Water Outlet Assemblies