Need a few extra horsepower to get your rig going? Try installing a K&N Filtercharger in your tow vehicle this year. A Filtercharger can actually double airflow, which, in turn, can add up to 15 extra horsepower. Gain longer service life and improved throttle response with a reusable, cleanable K&N Filtercharger Air Filter. No modification is required to the stock airbox. Flat panel filter measures 240mm x 181mm (9 7/16 x 7 1/8 inches). Fits 2005-09 Buick Rendezvous, Buick Terraza, Chevrolet Uplander, and Saturn Relay.