If an air filter is doing it’s job, it will get dirty. As a filter gets dirty, the amount of air that can flow through it is reduced. Without the proper amount of air, the engine will not be able to produce the power it should; nor it will be as fuel efficient as it should be. On turbocharged engines, air filtration is particularly important as debris can damage or destroy a very expensive turbocharger.
Car Models
- 2002–2009 Audi A4 B6/B7
Parts Required
- Audi A4 B6/B7 Air Filter (Part # 06C133843)
- K&N Performance Air Filter can also be used instead
Tools Required
- Phillips Head Screwdriver
Instruction
Step 1
Unscrew the 2 Phillips head screws that hold the air duct in.
Step 2
Remove air duct. The duct is in two pieces. The first piece (the part closer to the front of the car) should be separated from the second part and be pulled towards the back of the car for removal. The second part of the air duct lifts out of its location.
Step 3
Unclip the three clips that hold the adjacent line to the airbox. Simply grab the metal clip and pull it away from the airbox.
Step 4
Loosen, but do not remove, the two upper bolts on the airbox using the Phillips head screwdriver.
Step 5
Pull and separate the side of the airbox closest to the motor towards the motor and remove the old air filter, noting its orientation. Clean the debris out of the airbox and reinstall the new air filter. The orange lip should be closest to the motor.
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Step 6
Reassemble in reverse order. Double check all connections to make sure they are tight.
Step 7
You are done!
I have a B7 2007 and it is not like this.