Buy OEM 2011 Audi Part # 4H0819439 (4H0-819-439). Cabin Air Filter. A6, S6. A7, S7, RS7. A8, S8. FRONT. Cabin Air Filter - Repair or Replace If the air coming out of your vents smells a

Cabin Air Filter. Filter INS.
Cabin Air Filter.

Cabin Air Filter

Fits A6, A7, A7 Sportback, A8, RS7, S6, S7, S7 Sportback, S8

A6, S6. A7, S7, RS7. A8, S8. FRONT.
Cabin Air Filter - Repair or Replace
If the air coming out of your vents smells a little funny—like mildew or funk—or if your windshield fogs up with the A/C on, your 2011 Audi may have a clogged cabin filter. Many manufacturers recommend replacing the cabin filter, or pollen filter, as part of its scheduled maintenance.