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Looking for aftermarket parts to modify or upgrade your 2003 GMC Sierra 2500 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.
 OUT OF STOCK 23781Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23781. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no ... MagnaFlow Conv DF 05 Silverado 2500HD 6.0L 2001-2004 GMC Sierra 2500 SLE 2002-2004 GMC Sierra 2500 Base 2003-2004 GMC Sierra 2500 WT $1,176.00 |
 OUT OF STOCK 4551601Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551601. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, ... MagnaFlow 2003 GMC Savana 3500 6.0L Direct Fit Converter 2003-2003 GMC Sierra 2500 Base / SLE / SLT / WT $2,003.00 |
 OUT OF STOCK 4551602Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551602. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, ... MagnaFlow 2003 GMC Savana 3500 6.0L Direct Fit Converter 2003-2003 GMC Sierra 2500 Base / SLE / SLT / WT $2,035.00 |
 OUT OF STOCK 49006Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49006. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no... MagnaFlow Direct Fit Catalytic Converter 05 Silverado 2500HD 6.0L 2002-2004 GMC Sierra 2500 Base / SLE 2003-2004 GMC Sierra 2500 WT $1,281.00 |