Looking for in-stock aftermarket parts to modify or upgrade your 2003 GMC Sierra 1500 with catalytic converter direct fit? At Tunersports.com we carry a huge selection of the top name brand performance catalytic converter direct fit parts and accessories for your Sierra 1500.
Whether you have a 2003 GMC Sierra 1500 in Base to WT trim we have you covered. We have 5 catalytic converter direct fit available to mod your Sierra 1500. All parts have free shipping to the Continental US 48 States.
 IN STOCK 93419MagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv DF 02-06 Cadillac Escalade / 02-06 Chevy Avalanche 5.3L Dual Conv Y-Pipe Assembly 2WD 1999-2003 GMC Sierra 1500 SL 1999-2006 GMC Sierra 1500 SLE / SLT 2002-2005 GMC Sierra 1500 Base 2002-2006 GMC Sierra 1500 WT $595.00 |