Ecogard XC25838C COMPATIBLE with Saab 9-3 2006-2011, 9-4X 2011, 9-3X 2010-2011 REPLACES FIAT 46844822, PUROLATOR C25838, SAAB 1808617, 1808619, 1808624, 6808601, 9166107, 9179904, 9179905, 9196107, 9196343, 9201440, 93172129, 93172299, WIX 24472, 24525 FILTERS 99.5% of airborne solids and impurities from the outside air before it reaches the vehicle's interior cabin. HELPS PREVENT PREMATURE WEAR on your car's HVAC (air conditioning and heating) system blower by promoting good airflow inside the car. Replace per manufacturer recommendations or when existing cabin air filter inhibits airflow.