Not sure which 2009 Cadillac CTS Air Filters are right for you? We have over 14810 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Better throttle response and improved high RPM airflow, a worthwhile upgrade using the factory airbox. No significant change in mileage observed with the 1st fuel tank since install, but I am probably pushing the throttle a bit more." —Erik V from Raleigh, NC bought a K&N Air Filters for a 2009 Cadillac CTS, 3.6L V6.