What precautions should be taken when driving, and How to replace the thermostat on 2006 Audi A4?

Do not drive without a thermostat, as it can have a harmful effect on emissions and fuel economy. Four-cylinder engines contain a complete unit of thermostat. Start by removing engine covers, disconnection of the battery and emptying the coolant. Use specific steps in 1.8L and 2.0L engines, be sure to install correctly and check to make sure that engine does not leak.

Genuine 2006 Audi A4 Thermostat

Engine Coolant Thermostat

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3 Thermostats found

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2006 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
- Item Weight: 2.40 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 06D-121-111-G
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following 2006 Audi A4 Submodels:
- Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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2006 Audi A4 Thermostat Housing Part Number: 06E-121-111-G
$120.19 MSRP: $168.33
You Save: $48.14 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat; Thermostat Housing
- Replaces: 06E-121-111-D
- Item Weight: 2.40 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 06E-121-111-G
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
More Info
Fits the following 2006 Audi A4 Submodels:
- Base | 6 Cyl 3.2 L GAS
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2006 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
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Product Specifications
- Other Name: Thermostat
- Replaces: 06B-121-111-D, 06B-121-111-G, 06B-121-111-H
- Item Weight: 1.00 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 06B-121-111-K
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
More Info
Fits the following 2006 Audi A4 Submodels:
- Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS

2006 Audi A4 Thermostat Parts and Q&A

Q: What precautions should be taken when driving, and How to replace the thermostat on 2006 Audi A4?
A: Do not drive without a thermostat, as it can have a harmful effect on emissions and fuel economy. Four-cylinder engines contain a complete unit of thermostat. Start by removing engine covers, disconnection of the battery and emptying the coolant. Use specific steps in 1.8L and 2.0L engines, be sure to install correctly and check to make sure that engine does not leak.