Premium welded seam stainless steel and a durable heat shield means our Alero catalytic converter stands up to years of extreme temperatures and intense road wear. And, they bolt onto your exhaust, with no welding or problematic bending of pipes. We also have premium Alero catalytic converters that meet stringent California emissions standards. Plus, as if it all that wasn't enough, a 5-year, 50,000-mile warranty assures you of years of trouble free driving! Find out what thousands of our satisfied customers already know - we guarantee only the best!