If you're viewing this item, chances are you're like the countless other people we run into who have a cracked, leaking, or otherwise bad catalytic converter on their vehicle. Pacesetter has your solution with this bolt on direct replacement catalytic converter. Simply unbolt and remove your bad converter and attached piping, and reinstall the new Pacesetter converter and attached piping. You'll be back on the road running as good as new in no time. The part number for this item is 324086 and it fits 1999-2006 Chevy Silverado, GMC Sierra 2000-2006 Chevy Tahoe, Suburban, GMC Yukon, 2002-2006 Chevy Avalanche, Cadillac Escalade Catalytic Converter (4.8 and 5.3 V8 Models).