2004 Audi S4 Emission Control Parts
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Eastern Catalytic®Universal Fit Large Oval Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Large Oval. Catalytic Converter Overall Length: 16". Whether your catalytic converter is damaged by road debris...$155.38 - $255.04 - Eastern Catalytic®Universal Fit Oval Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you...$118.45 - $187.70
- Eastern Catalytic®Universal Fit Round Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you...$129.11 - $178.85
- Eastern Catalytic®Universal Fit Round Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Contains approximately 40% higher precious metal content than most other aftermarket brands. Aristo...$351.21 - $449.64
- Holstein®PCV ValveAudi S4 2004, PCV Valve by Holstein®. Global coverage of European, Asian, and Domestic vehicles. OE Replacement Parts You Can Trust. The Variable Valve Timing Solenoid alters the supply of oil pressure to the camshaft depending on the...Holstein focuses on using only the highest quality materialsManufactured to exacting standards for an aftermarket product that is truly built to match or exceed the OE part$50.36
- SMP®Air Pump Check ValveAudi S4 2004, Air Pump Check Valve by SMP®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed specifically for motorcycle applicationsPerfect to help you work more efficiently$15.22
- Genuine®Crankcase Breather HoseAudi S4 2004, Crankcase Breather Hose by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$57.40 - $222.16
- Genuine®Vapor Canister Bracket BoltAudi S4 Cabriolet 2004, Vapor Canister Bracket Bolt by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium...Made with precision and quality in mindDesigned to meet your specific needs$1.24
- ReplacementOxygen SensorAudi S4 2004, Oxygen Sensor by Replacement. 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, this product by Replacement will last a...Expertly crafted from premium materialsDesigned to match rigorous quality standards$12.90 - $26.19
- Spectra Premium®Oxygen SensorAudi S4 2004, Oxygen Sensor by Spectra Premium®. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the aftermarket’s most rigorous...Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements$19.92 - $30.65
- NTK®Oxygen SensorAudi S4 2004, Oxygen Sensor by NTK®. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor element then sends voltage signals back to the...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$86.01
- WVE®PCV ValveAudi S4 2004, PCV Valve 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 environmental...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$104.84
- Vemo®Oxygen SensorAudi S4 2004, Oxygen Sensor by Vemo®. 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...High quality at an affordable priceExpertly made from premium materials$106.96 - $269.23
- CRS®Oxygen SensorAudi S4 2004, Oxygen Sensor by CRS®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Compliant with the most strict standards for qualityDesigned to comply with the highest quality standards$53.98 - $81.31
- Vemo®EGR Valve Cable Repair SetAudi S4 2004, EGR Valve Cable Repair Set by Vemo®. Grade: Q+. Kit: included: Wiring Harness Connector, Harness Clamp. Vemo products are made by high-quality materials and undergo strict quality tests. They are, thereby, the perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$26.72
- WVE®Vapor Canister Purge SolenoidAudi S4 2004, Vapor Canister Purge Solenoid 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$30.13
- WVE®Non-Catalytic Converter Mounted Secondary Air Injection Pump Check ValveAudi S4 2004, Non-Catalytic Converter Mounted Secondary Air Injection Pump Check Valve by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$14.67
- WVE®Evaporative Emissions System Leak Detection PumpAudi S4 2004, Evaporative Emissions System Leak Detection Pump 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$362.26
- GPD®Vapor Canister Purge SolenoidAudi S4 2004, Vapor Canister Purge Solenoid by GPD®. The vapor canister purge valve/solenoid controls the amount of fuel vapor purged from the charcoal canister to the engine, preventing excess fuel vapor from escaping into the atmosphere.Designed to meet/exceed OE fit, form, and functionDurability tested on every new design$96.80
- Pierburg®Air Pump Check ValveAudi S4 2004, Air Pump Check Valve by Pierburg®. 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...24 MonthsMade to provide unequaled quality and reliability$80.60
- URO Parts®Vapor Canister Purge ValveAudi S4 2004, Vapor Canister Purge Valve by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$23.10
- Standard®Intermotor™ Fuel Vapor Leak Detection PumpAudi S4 2004, Intermotor™ Fuel Vapor Leak Detection Pump by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...Made with precision and quality in mindDesigned to meet your specific needs$183.21
- Original Equipment®Vapor Canister FilterAudi S4 2004, Vapor Canister Filter by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$36.63
- Pierburg®EGR Vacuum SolenoidAudi S4 2004, EGR Vacuum Solenoid by Pierburg®. 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...High quality at an affordable priceExpertly made from premium materials$47.07
- CATCO®Direct Fit Catalytic Converter and Pipe AssemblyAudi S4 Transmission with California Emission / Federal Emission 2004, Catalytic Converter and Pipe Assembly by CATCO®. Converter Configuration: Direct Fit. Position: Driver Side. Catalytic Converter Overall Length: 44.5". Designed and...$794.72
- AP Exhaust®Direct Fit Catalytic Converter and Pipe AssemblyAudi S4 Standard Transmission 2004, Catalytic Converter and Pipe Assembly by AP Exhaust®. Converter Configuration: Direct Fit. Position: Driver Side. Without Air Tube. Catalytic Converter Overall Length: 44.5". Today’s exhaust...$637.77
- MagnaFlow®OBDII Direct Fit Catalytic ConverterAudi S4 with LEV Standard / with LEV1 Standard 2004, OBDII 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...$1,441.00 - $1,454.00
- Eastern Catalytic®ECO III Direct Fit Catalytic Converter and Pipe AssemblyAudi S4 Standard Transmission 2004, ECO III Catalytic Converter and Pipe Assembly by Eastern Catalytic®. Converter Configuration: Direct Fit. Location: Undercar. With 2 O2 Sensor Ports. Catalytic Outlet Diameter: 2.2". If you need to...$646.23 - $667.62
- ACAT Global®High Performance Universal Fit Catalytic ConverterAudi S4 2004, High Performance Catalytic Converter by ACAT Global®. Converter Configuration: Universal Fit. Without O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic Converter Overall Length: 13"....$171.50
- ACAT Global®Universal Fit Catalytic ConverterAudi S4 2004, Catalytic Converter by ACAT Global®. Converter Configuration: Universal Fit. Without O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic Converter Overall Length: 13". This product...$249.95
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