2001 Audi A4 Emission Control Parts
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CRP®Breather HoseAudi A4 / A4 Quattro 2001, Breather Hose by CRP®. 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...$6.51 - $23.26 - Rein®Breather HoseAudi A4 2001, Breather Hose by Rein®. Air, breather, and vacuum hoses channel air and vapors and make sure your vacuum operated accessories can be properly actuated. Unfortunately, age and exposure to heat and the environment can cause...Direct fit, form, and functionEngineered to the highest OE standards$7.74 - $20.44
- URO Parts®Air Pump HoseAudi A4 / A4 Quattro 1.8L 2001, Air Pump Hose by URO Parts®. Location: Valve to Air Hose. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and...High quality at an affordable priceExpertly made from premium materials$16.11
- Vaico®Secondary Air Injection Pump HoseAudi A4 1.8L 2001, Secondary Air Injection Pump Hose by Vaico®. Designed utilizing the latest technology, this product by Vaico features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Made with precision and quality in mindDesigned to meet your specific needs$55.09 - $90.74
- Mahle®Secondary Air Injection Pump GasketAudi A4 / A4 Quattro 1.8L 2001, Secondary Air Injection Pump 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.95
- Genuine®EGR Valve Adapter GasketAudi A4 / A4 Quattro 2.8L 2001, EGR Valve Adapter Gasket 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$16.62
- Davico®Direct Fit Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, Catalytic Converter by Davico®. Converter Configuration: Direct Fit. Catalytic Converter Overall Length: 16.75". This direct-fit catalytic converter by Davico will be a great solution to replace your...$209.85 - $354.48
- AP Exhaust®Direct Fit Catalytic ConverterAudi A4 1.8L 2001, 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...$546.66 - $863.72
- Walker®Ultra™ Direct Fit Round Body Catalytic ConverterAudi A4 1.8L 2001, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter Overall Length: 15.375". Walker is an OE...$529.52
- MagnaFlow®Heavy Metal Direct Fit Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, Heavy Metal 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 Diameter:...$897.00
- MagnaFlow®Heavy Metal Universal Fit Round Body Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, 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"....$182.00
- MagnaFlow®OBDII Direct Fit Catalytic ConverterAudi A4 2001, 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, with...$1,035.00 - $1,316.00
- MagnaFlow®OBDII Universal Fit Round Body Catalytic ConverterAudi A4 2.8L with LEV Standard / LEV1 Standard 2001, OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Converter...$378.00 - $516.00
- MagnaFlow®OEM Grade Universal Fit Round Body Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, 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"....$197.00
- Torxe™Direct Fit Catalytic ConverterAudi A4 1.8L 2001, 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 a...$147.50
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. Catalytic Converter Overall Length: 15.25". If your car needs replacement, install one...$1,121.00
- Walker®CalCat™ Universal Fit Catalytic ConverterAudi A4 2.8L Engine Family # 1ADXV02.8334 2001, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. With 1 Inlet. Without Air Tube. With O2 Sensor Port. Specifically designed to comply with the California...$383.09 - $409.51
- iD Select®Standard Universal Fit Oval Body Catalytic ConverterAudi A4 Quattro 2.8L Transmission 2001, Standard Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic...$72.47
- CATCO®OBDII Universal Fit Round Body Catalytic ConverterAudi A4 / A4 Quattro 1.8L with California Emission / Federal Emission 2001, OBDII Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With 1 Passenger Side O2...$173.95
- TruParts®Exhaust System HangerAudi A4 with California Emission / with Federal Emission 2001, Exhaust System Hanger by TruParts®. Go with this high-quality product to restore your vehicle’s lost power and bring it back to its optimal condition. Made from the finest...Made utilizing the finest materials and equipmentEngineered to restore your vehicle to its pristine condition$3.39 - $11.33
- CATCO®Direct Fit Catalytic ConverterAudi A4 / A4 Quattro 1.8L with California Emission / Federal Emission 2001, Catalytic Converter by CATCO®. Converter Configuration: Direct Fit. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 17". Designed and manufactured...$762.28
- Walker®Ultra™ Universal Fit Round Body Catalytic ConverterAudi A4 1.8L 2001, 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:...$157.56
- Eastern Catalytic®Direct Fit Catalytic Converter and Pipe AssemblyAudi A4 Quattro 2.8L Transmission 2001, Catalytic Converter and Pipe Assembly by Eastern Catalytic®. Converter Configuration: Direct Fit. Position: Passenger Side. Location: Undercar. Catalytic Outlet Diameter: 2". Catalytic Converter...$559.31
- Eastern Catalytic®ECO III Direct Fit Catalytic ConverterAudi A4 / A4 Quattro 1.8L 2001, ECO III Catalytic Converter by Eastern Catalytic®. Converter Configuration: Direct Fit. Location: Undercar. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 18". If you need to replace your...$542.17
- HJS®Triangle Catalytic Converter GasketAudi A4 / A4 Quattro 1.8L 2001, Triangle Catalytic Converter Gasket by HJS®. Location: Converter to Pipe. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...High quality at an affordable priceExpertly made from premium materials$4.60 - $6.35
- Davico®Universal Fit Catalytic ConverterAudi A4 2001, Catalytic Converter by Davico®. Converter Configuration: Universal Fit. This Universal fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat...$122.58 - $845.01
- Walker®3-Bolt Catalytic Converter GasketAudi A4 1.8L 2001, 3-Bolt Catalytic Converter Gasket by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you...Makes installation quick and easyOptimal OE-style fit and quality$6.99
- Audi OEExhaust System - Exhaust Components (1.8L)Audi A4 Quattro 1.8L 2001, Exhaust System - Exhaust Components by Audi OE. Keep your Audi looking showroom-new and running at its best with top-grade Audi OE parts. Genuine in quality, fit, and finish, they’re the finest option to go...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$25.33 - $1,563.80
- Audi OEExhaust System - Exhaust Components (1.8L)Audi A4 1.8L 2001, Exhaust System - Exhaust Components by Audi OE. Keep your Audi looking showroom-new and running at its best with top-grade Audi OE parts. Genuine in quality, fit, and finish, they’re the finest option to go if you...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$25.33 - $1,563.80
- Audi OEExhaust System - Manifold (1.8L)Audi A4 Quattro 1.8L 2001, Exhaust System - Manifold by Audi OE. Keep your Audi looking showroom-new and running at its best with top-grade Audi OE parts. Genuine in quality, fit, and finish, they’re the finest option to go if you want...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$25.33 - $1,563.80
Shop By Service Type
- Oxygen Sensor Replacement
- Air Pump Check Valve Replacement
- Canister Purge Solenoid Replacement
- Positive Crankcase Ventilation (PCV) Valve Hose Replacement
- Positive Crankcase Ventilation (PCV) Valve Replacement
- Secondary Air Injection Hose Replacement
- Fuel Evaporative Canister Replacement
- Air Injection System Control Valve Replacement
- Secondary Air Injection System Air Bypass Valve Replacement
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