Buy OEM Audi Part # 1K1819669 (1K0819644B, 1K1-819-669, 1K1819653B). Cabin Air Filter. Cabin Air Filter - Repair or Replace If the air coming out of your vents smells a little funny—like mildew or funk—or

Filter. Air. element. Cabin. Od.
Cabin Air Filter. Odor & Pollen. Odor and Fine Particulates Filter.

Cabin Air Filter

Fits A3, Q3, TT, TT RS, TTS

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 Audi may have a clogged cabin filter. Many manufacturers recommend replacing the cabin filter, or pollen filter, as part of its scheduled maintenance.