With Mandrel-bent tubing, your new Buick Regal exhaust headers provide a nearly unrestricted flow of exhaust gases, greatly reducing backpressure. They also improve engine scavenging, which siphons fumes out of the cylinders for additional improved performance. Power boosts between 10-25 horsepower aren't uncommon for many of the headers we carry here at AutoAnything. Not only do performance Buick Regal exhaust headers give you greater power, they look great and reward you with that unmistakable racetrack low rumbling roar. Finally, our Regal headers come with AutoAnything's 1-year lower price guarantee and free shipping offer.