Genuine Audi A4 Thermostat Housing

Engine Coolant Thermostat Housing

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9 Thermostat Housings found

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Audi A4 Thermostat Housing Part Number: 030-121-121-B
$25.49 MSRP: $40.78
You Save: $15.29 (38%)
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Product Specifications
- Other Name: Adapter; Cover
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1997-2001 Audi A4 | Base | 4 Cyl 1.8 L GAS
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Audi A4 Thermostat Housing Part Number: 06H-121-121-L
$29.86 MSRP: $47.78
You Save: $17.92 (38%)
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Product Specifications
- Other Name: Cover; Thermostat Cover, Thermostat Outlet
- Replaces: 06H-121-121-K
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2016 Audi A4 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A4 Thermostat Housing Part Number: 06J-121-121
$29.86 MSRP: $47.78
You Save: $17.92 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cover; Thermostat Outlet
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2014 Audi A4 | Base | 4 Cyl 2.0 L GAS
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Audi A4 Thermostat Housing Part Number: 06D-121-111-G
$86.87 MSRP: $121.67
You Save: $34.80 (29%)
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Product Specifications
- Other Name: Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005-2009 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Audi A4 Thermostat Housing Part Number: 06E-121-111-G
$120.19 MSRP: $168.33
You Save: $48.14 (29%)
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Product Specifications
- Other Name: Thermostat; Thermostat Housing
- Replaces: 06E-121-111-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2006-2008 Audi A4 | Base | 6 Cyl 3.2 L GAS
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Audi A4 Thermostat Housing Part Number: 06C-121-111-E
$117.80 MSRP: $164.98
You Save: $47.18 (29%)
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Product Specifications
- Other Name: Thermostat
- Replaces: 06C-121-111-C
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002-2005 Audi A4 | Base, Cabriolet | 6 Cyl 3.0 L GAS
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Audi A4 Water Pump Cover Plate Part Number: 078-121-121-J
$122.57 MSRP: $171.67
You Save: $49.10 (29%)
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Product Specifications
- Other Name: Cover
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1998-2001 Audi A4 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi A4 Water Pump Housing Part Number: 06L-121-111-P
$205.87 MSRP: $288.33
You Save: $82.46 (29%)
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Product Specifications
- Other Name: Thermostat
- Replaces: 06L-121-111-F, 06L-121-111-H, 06L-121-111-G, 06L-121-111-M, 06L-121-111-L, 06L-121-111-K, 06L-121-111-J
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A4 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A4 Thermostat Housing Part Number: 06B-121-111-K
$264.76 MSRP: $370.82
You Save: $106.06 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaces: 06B-121-111-D, 06B-121-111-G, 06B-121-111-H
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002-2006 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS

Audi A4 Thermostat Housing

The Audi A4 Thermostat Housing will only open when it is necessary, allowing the coolant to pass through to maintain the engine in its optimal temperature range. Placed between the radiator and the aluminum block, it contains a wax capsule that melts as the heat increases and forces a piston, which transfers overheated fluid to the radiator and replaces the coolant in the system with fresh coolant to cool it quickly. This fast cycle prevents the loss of power through overcooling and secures the vehicle's necessary gaskets against blistering highs to ensure they provide consistent performance in a bumper-to-bumper traffic jam or on open highways. Over the years of A4 production, two styles were introduced, an early cast-metal outlet and a current-day one-piece composite cluster, but both fit on a broad range of sedans, Avants, and allroad wagons with no complications. These two versions have one thing in common and that is offering the cold-blooded control that makes Audi engines legendary. The Thermostat Housing is designed to cut down on weight, eliminate additional gaskets, and straighten coolant paths, reducing the likelihood of leaks and increasing service life. The rapid reaction of the Thermostat Housing means that the engine enters the operating temperature more quickly, refining the fuel maps, reducing emissions, and allowing the electric fan to rest more frequently. The compatibility encompasses petrol and diesel engines, front-drive or Quattro, which means a single proven Thermostat Housing will be compatible with almost every small executive car leaving an Audi factory with a badge marked A4. This breadth reduces searches for parts and reflects the brand's intent to be straightforward, which has aided Audi in having a following of fans. Hard composite plastic resists corrosion and retains thread integrity during myriad heat cycles, and allows each Audi cooling loop to operate with the same crisp efficiency at one hundred thousand miles as on day one.

Choose original equipment manufacturer Thermostat Housing for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Thermostat Housing at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi A4 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your A4 needs now.