Premium Guard Cabin Air Filter PC5654 | Fits 2003-2015 Cadillac CTS, 2004-2009 Cadillac SRX, 2006-2010 Cadillac STS 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 Cadillac CTS, Cadillac SRX, Cadillac STS. Precisely designed for Cadillac 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 GM 25740404 cabin air filters