2003 GMC Sierra Catalytic Converters
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AP Exhaust®Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, Catalytic Converter and Pipe Assembly by AP Exhaust®. Converter Configuration: Direct Fit. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a...$446.03 - $1,077.39 - MagnaFlow®Diesel Direct Fit Catalytic ConverterGMC Sierra 6.6L 2003, Diesel Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. Catalytic Converter Overall Length: 45.75". If your car needs replacement, install one that will get you through the...$771.00
- CATCO®Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, Catalytic Converter and Pipe Assembly by CATCO®. Converter Configuration: Direct Fit. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs...$470.99 - $742.88
- Davico®Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, Catalytic Converter and Pipe Assembly by Davico®. Converter Configuration: Direct Fit. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once...$234.74 - $1,461.81
- AP Exhaust®Direct Fit Catalytic ConverterGMC Sierra 2003, Catalytic Converter by AP Exhaust®. Converter Configuration: Direct Fit. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is...$495.42 - $1,479.48
- Walker®Ultra™ Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, Ultra™ Catalytic Converter and Pipe Assembly by Walker®. Converter Configuration: Direct Fit. With O2 Sensor Port. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an industry...$345.81 - $901.28
- iD Select®ECO CARB Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, ECO CARB Catalytic Converter and Pipe Assembly by iD Select®. Converter Configuration: Direct Fit. Position: Center. With 4 O2 Sensor Ports. Catalytic Converter Overall Length: 46". Swap out your worn-out or...$820.09 - $1,432.77
- Davico®Direct Fit Catalytic ConverterGMC Sierra Chassis Cab 6.0L / 8.1L with Gross Vehicle Weight over 10000 and under 14000 lbs, Federal Emission 2003, Catalytic Converter by Davico®. Converter Configuration: Direct Fit. Position: Rear Passenger Side. With 1 O2 Sensor...$539.35
- Walker®CalCat™ Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, CalCat™ Catalytic Converter and Pipe Assembly by Walker®. Converter Configuration: Direct Fit. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an industry leader, for the finest...$662.48 - $1,647.29
- MagnaFlow®Diesel Universal Fit Round Body Catalytic ConverterGMC Sierra 6.6L 2003, Diesel Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 12". If your...$506.00
- MagnaFlow®Heavy Metal Universal Fit Catalytic ConverterGMC Sierra 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. If your car needs a new catalytic converter, install one that will get you through the...$178.00 - $222.00
- MagnaFlow®OBDII Universal Fit Oval Body Catalytic ConverterGMC Sierra 2003, OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. OEM Spec. If your car needs a new catalytic converter,...$390.00 - $582.00
- MagnaFlow®OEM Grade Universal Fit Catalytic ConverterGMC Sierra 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. If your car needs a new catalytic converter, install one that will get you through the smog...$194.00 - $231.00
- Walker®CalCat™ Universal Fit Catalytic ConverterGMC Sierra 2003, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. Specifically designed to comply with the California Air Resources Board (CARB) Regulations....$336.39 - $1,033.29
- MagnaFlow®Direct Fit Catalytic ConverterGMC Sierra with LEV Standard / with LEV1 Standard 2003, Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet...$2,201.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic ConverterGMC Sierra 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. If your car needs replacement, install one that will get you through the smog check. This converter will directly...$511.00 - $1,176.00
- MagnaFlow®OBDII Direct Fit Catalytic ConverterGMC Sierra 2003, OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter will directly replace the factory unit,...$1,035.00 - $3,236.00
- Walker®Ultra™ Direct Fit Catalytic ConverterGMC Sierra 2500 HD 6.0L / 8.1L 2003, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Direct Fit. Position: Passenger Side. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...$606.16 - $680.20
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterGMC Sierra 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter is part of the exhaust...$336.00 - $1,470.00
- iD Select®ECO II Universal Fit Oval Body Catalytic ConverterGMC Sierra 4.3L / 4.8L / 5.3L 2003, ECO II Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet...$124.41
- Torxe™Direct Fit Catalytic ConverterGMC Sierra 1500 2003, Catalytic Converter by Torxe™. Converter Configuration: Direct Fit. Direct Fit Catalytic converter by Torxe. Replace your clogged, corroded, and malfunctioning catalytic converter for the best possible price with...$310.50
- AP Exhaust®Universal Fit Catalytic ConverterGMC Sierra 2003, Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand...$206.52 - $699.54
- iD Select®ECO II Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, ECO II Catalytic Converter and Pipe Assembly by iD Select®. Converter Configuration: Direct Fit. Location: Undercar. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....$446.07 - $782.95
- CATCO®Direct Fit Catalytic ConverterGMC Sierra with Federal Emission 2003, Catalytic Converter by CATCO®. Converter Configuration: Direct Fit. Position: Passenger Side. With 1 O2 Sensor Port. Designed and manufactured with innovative fabrication methods, high-tech...$622.68 - $713.53
- iD Select®Standard Universal Fit Large Oval Body Catalytic ConverterGMC Sierra 2003, Standard Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Large Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 3"....$225.30
- CATCO®Universal Fit Catalytic ConverterGMC Sierra 2003, Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Without Air Tube. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs...$173.95 - $434.53
- Eastern Catalytic®ECO II Direct Fit Catalytic ConverterGMC Sierra 2003, ECO II Catalytic Converter by Eastern Catalytic®. Converter Configuration: Direct Fit. Position: Passenger Side. Location: Undercar. With 1 O2 Sensor Port. If you need to replace your failed or damaged catalytic...$501.57 - $613.79
- Eastern Catalytic®ECO II Direct Fit Y-Pipe Catalytic Converter AssemblyGMC Sierra 2003, ECO II Y-Pipe Catalytic Converter Assembly by Eastern Catalytic®. Converter Configuration: Direct Fit. Location: Undercar. If you need to replace your failed or damaged catalytic converter, this product is the right...$475.76 - $638.33
- Walker®Ultra™ Universal Fit Catalytic ConverterGMC Sierra 2003, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. The Right converter, the Right choice. 5-year / 50,000 Miles Warranty on...$155.35 - $155.88
- AP Exhaust®608 Series Universal Fit Round Body Catalytic ConverterGMC Sierra 2003, 608 Series Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With 1 Passenger Side O2 Sensor Port. Catalytic Inlet Diameter: 2.5"....$153.62
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2003 GMC Sierra Models
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