2003 Chevy Impala Emission Control Parts
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WVE®Oxygen Sensor ConnectorChevy Impala 2003, Oxygen Sensor Connector by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine to minimize...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$35.26 - $40.77 - ACDelco®GM Original Equipment™ EGR Valve Solenoid ConnectorChevy Impala 2003, GM Original Equipment™ EGR Valve Solenoid Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$41.10Save: $6.16 (15%)$34.94
- ACDelco®Genuine GM Parts™ EGR Valve AdapterChevy Impala 3.8L 2003, Genuine GM Parts™ EGR Valve Adapter by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$589.50Save: $93.65 (16%)$495.85
- Standard®EGR Valve Motor ConnectorChevy Impala 3.4L 2003, EGR Valve Motor Connector by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...Made with precision and quality in mindDesigned to meet your specific needs$24.16
- WVE®EGR Vacuum Regulator Solenoid ConnectorChevy Impala 3.4L 2003, EGR Vacuum Regulator Solenoid Connector by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$20.11
- WVE®EGR Valve GasketChevy Impala 2003, EGR Valve Gasket by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine to minimize emissions of...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$2.07 - $14.81
- Mahle®EGR Valve GasketChevy Impala 2003, EGR Valve Gasket by Mahle®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your...Made with precision and quality in mindDesigned to meet your specific needs$2.21 - $5.26
- Fel-Pro®EGR Valve GasketChevy Impala 2003, EGR Valve Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets meet...Direct OEM replacement for a proper fitEnsures reliable sealing performance$1.97 - $4.41
- Apex Auto®EGR Valve GasketChevy Impala 3.4L 2003, EGR Valve Gasket by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Quick accurate delivery with excellent fill-rateExcellent inventory availability$3.27
- Walker®Ultra™ Direct Fit Round Body Catalytic ConverterChevy Impala 2003, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Walker is an OE supplier to many major nameplate vehicle...$283.64 - $289.75
- AP Exhaust®Direct Fit Catalytic Converter and Pipe AssemblyChevy Impala 2003, Catalytic Converter and Pipe Assembly by AP Exhaust®. Converter Configuration: Direct Fit. Without Air Tube. With 1 O2 Sensor Port. Today’s exhaust performance market continues to cover a broad spectrum of vehicles....$280.13 - $280.93
- MagnaFlow®Heavy Metal Direct Fit Catalytic ConverterChevy Impala 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter:...$379.00 - $391.00
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterChevy Impala 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. If your car needs replacement, install one that will get you through the smog check. This converter is...$397.00 - $411.00
- CATCO®Direct Fit Catalytic Converter and Pipe AssemblyChevy Impala with California Emission / with Federal Emission 2003, Catalytic Converter and Pipe Assembly by CATCO®. Converter Configuration: Direct Fit. With 1 O2 Sensor Port. Designed and manufactured with innovative fabrication...$303.32 - $306.51
- MagnaFlow®Heavy Metal Universal Fit Round Body Catalytic ConverterChevy Impala 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic...$188.00
- MagnaFlow®OEM Grade Universal Fit Round Body Catalytic ConverterChevy Impala 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic...$202.00
- Walker®CalCat™ Universal Fit Round Body Catalytic ConverterChevy Impala Engine Family # 3GMXV03.8044 2003, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Catalytic...$605.15
- iD Select®ECO GM Direct Fit Catalytic Converter and Pipe AssemblyChevy Impala 2003, ECO GM Catalytic Converter and Pipe Assembly by iD Select®. Converter Configuration: Direct Fit. Location: Undercar. With 1 O2 Sensor Port. Swap out your worn-out or malfunctioning part with this top-notch exhaust...$280.96 - $283.91Save: 10%$252.86 - $255.52
- Davico®Direct Fit Catalytic Converter and Pipe AssemblyChevy Impala 2003, Catalytic Converter and Pipe Assembly by Davico®. Converter Configuration: Direct Fit. Position: Center. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged...$273.67 - $487.29
- CATCO®OBDII Universal Fit Round Body Catalytic ConverterChevy Impala with California Emission / with Federal Emission 2003, OBDII Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Designed and manufactured with...$173.95 - $180.71
- Davico®Universal Fit Catalytic ConverterChevy Impala with California Emission / with Federal Emission 2003, Catalytic Converter by Davico®. Converter Configuration: Universal Fit. Position: Rear. Catalytic Inlet Diameter: 2.5". Catalytic Converter Overall Length: 15". This...$122.58
- Eastern Catalytic®ECO GM Direct Fit Catalytic Converter and Pipe AssemblyChevy Impala 2003, ECO GM Catalytic Converter and Pipe Assembly by Eastern Catalytic®. Converter Configuration: Direct Fit. Location: Undercar. With 1 O2 Sensor Port. If you need to replace your failed or damaged catalytic converter,...$292.96 - $293.64
- ACDelco®Genuine GM Parts™ Catalytic Converter GasketChevy Impala 2003, Genuine GM Parts™ Catalytic Converter Gasket by ACDelco®. Location: Converter to I-Pipe. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.10Save: $4.95 (15%)$27.15
- Walker®Ultra™ Universal Fit Round Body Catalytic ConverterChevy Impala 2003, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length:...$155.88
- AP Exhaust®608 Series Universal Fit Round Body Catalytic ConverterChevy Impala 2003, 608 Series Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5"....$153.62 - $154.81
- CATCO®Select Plus Tech Series OBDII Universal Fit Round Body Catalytic ConverterChevy Impala with California Emission / with Federal Emission 2003, Select Plus Tech Series OBDII Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2...$644.78
- Eastern Catalytic®ECO GM Universal Fit Large Oval Body Catalytic ConverterChevy Impala 2003, ECO GM Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Large Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Converter...$246.72 - $292.60
- Big End Performance®PCV Breather CapPCV Breather Cap by Big End Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...$12.39 - $15.76
- Big End Performance®Clamp On PCV BreatherClamp On PCV Breather by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of quality....High quality at an affordable priceExpertly made from premium materials$16.27 - $18.98
- Edelbrock®Victor Series Race Style PCV BreatherVictor Series Race Style PCV Breather by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$44.95
Shop By Service Type
- EGR Valve Replacement
- Fuel Evaporative Canister Replacement
- Oxygen Sensor Replacement
- Positive Crankcase Ventilation (PCV) Valve Hose Replacement
- EGR Tube Replacement
- Secondary Air Injection Hose Replacement
- Evaporation Vent Solenoid Replacement
- Canister Purge Solenoid Replacement
- Positive Crankcase Ventilation (PCV) Valve Replacement
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2003 Chevy Impala Models
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