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Looking for aftermarket parts to modify or upgrade your 2003 GMC Sierra 3500 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 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 3500 Base / SLE / SLT $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 3500 Base / SLE / SLT $2,035.00 |
 IN STOCK - DROPSHIPS 4551642Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551642. 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 03-06 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter 2003-2003 GMC Sierra 3500 Base / SLE / SLT $1,674.00 |
 IN STOCK - DROPSHIPS 49643Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49643. 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 00-06 Chevy/GMC D/S OEM 2003-2003 GMC Sierra 3500 Base / SLE / SLT $782.00 |
 IN STOCK - DROPSHIPS 51759Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51759. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single lase... MagnaFlow Direct Fit Catalytic Converter 98-04 VW Beetle 1.9L 2001-2005 GMC Sierra 3500 SLT 2001-2006 GMC Sierra 3500 SLE 2002-2005 GMC Sierra 3500 Base $258.00 |
 IN STOCK - DROPSHIPS 52493Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52493. 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 2001-2006 Sierra HD V8 6.0L Passenger Side 2001-2006 GMC Sierra 3500 SLE / SLT 2002-2005 GMC Sierra 3500 Base $487.00 |
 OUT OF STOCK 52494Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52494. 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 2001-2006 Chevrolet Silverado 3500 2001-2006 GMC Sierra 3500 SLE / SLT 2002-2005 GMC Sierra 3500 Base $379.00 |
 OUT OF STOCK 60501Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Diesel Oxidation Catalyst 60501. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper too... MagnaFlow Direct Fit Catalytic Converter01-05 GM Silv/Sierra 6.6L 2001-2005 GMC Sierra 3500 SLE / SLT 2002-2005 GMC Sierra 3500 Base $840.00 |
 IN STOCK - DROPSHIPS 93480Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93480. 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 00-06 Chevy/GMC Driver Side 2003-2003 GMC Sierra 3500 Base / SLE / SLT $744.00 |