Premium Guard Cabin Air Filter PC5484 | Fits 2002-2008 Audi A4, 2002-2009 Audi S4, 2007-2008 Audi RS4, 1999-2005 Audi A6, 2002-2003 Audi S6, 2003-2004 Audi RS6 Premium Guard Cabin Filters prevents harmful spores and pollen from entering the vehicle cabin while keeping passengers protected. We have maximized the filtration area in our cabin filters without affecting the free-flow of air into the passengers' cabin. Compatible with Audi A4, Audi S4, Audi RS4, Audi A6, Audi S6, Audi RS6. Precisely designed for Audi cabin air filter requirements. Cabin Air Filter installs smoothly with easy-to-follow product replacement instructions inside each Premium Guard Cabin Air Filter box. Installation only takes a few minutes in most cars. Replaces Volkswagen/Audi 8E0 819 439 cabin air filters