2012 Audi A4 Emission Control Parts
Select Your Submodel
- TRQ®Oxygen SensorAudi A4 / A4 Quattro 2012, Oxygen Sensor by TRQ®. If your oxygen sensor fails, replace it with this top-grade part developed to easily fix the problem. Built to fit and function exactly as the part it is replacing, the product provides...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$38.90 - $58.23$40.95 - $61.95Save up to 6%
- Bosch®Premium Wideband Oxygen SensorAudi A4 2.0L 2012, Premium Wideband Oxygen Sensor by Bosch®. Position: Upstream. This sensor utilizes a sophisticated sensing element enabling it to produce a precise output in proportion to the air/fuel ratio. Wideband sensors use a...Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor$130.38
- Walker Products®Oxygen SensorAudi A4 2.0L Gas 2012, Oxygen Sensor by Walker Products®. 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...High quality at an affordable priceExpertly made from premium materials$59.62 - $108.23
- Bosch®Narrow-band Oxygen SensorAudi A4 2.0L 2012, Narrow-band Oxygen Sensor by Bosch®. Position: Downstream. The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which...OE-EquivalentOE Style connectors and wire lengths$50.66
- Denso®Oxygen SensorAudi A4 2.0L 2012, Oxygen Sensor by Denso®. Position: Downstream. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch products designed by Denso....High quality plastic and/or steel constructionDirect replacement for a proper fit every time$96.36
- Bosch®Premium Narrow-band Oxygen SensorAudi A4 2.0L 2012, Premium Narrow-band Oxygen Sensor by Bosch®. Position: Downstream. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen...OE Identical ConnectorCompact Design$96.23
- Walker Products®Premium Oxygen SensorAudi A4 / A4 Quattro 2.0L CAEB Engine Gas 2012, Premium Oxygen Sensor by Walker Products®. Position: Downstream. Location: B1S2 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or...Improved Engine Response & PerformanceLower Emissions$68.44
- NTK®Oxygen SensorAudi A4 2.0L 2012, Oxygen Sensor by NTK®. Position: Downstream. Location: B1S2. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$101.52
- Dorman®OE Solutions™ Secondary Air Injection PumpAudi A4 Quattro 3.2L 2012, OE Solutions™ Secondary Air Injection Pump by Dorman®. Dorman’s A.I.R. Pump comes with all the hardware and other components necessary for a complete repair. Since this part is a direct replacement, the...Save money by replacing only the failed pump - instead of the entire mating cover assemblyReplacement restores A.I.R. System to proper functioning$317.71
- Facet®Oxygen SensorAudi A4 2012, Oxygen Sensor by Facet®. Position: Rear. 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...The reliable goods for increase of reliability of the carQuality equal, if not superior, to that of the original components$41.72
- Walker Products®Wideband Premium Oxygen SensorAudi A4 / A4 Quattro 2.0L CAEB Engine Gas 2012, Wideband Premium Oxygen Sensor by Walker Products®. Position: Upstream. Location: B1S1 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet...High quality at an affordable priceExpertly made from premium materials$108.23
- Standard®Intermotor™ Vapor CanisterAudi A4 / A4 Quattro 2012, Intermotor™ Vapor Canister 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$358.04
- Vemo®Oxygen SensorAudi A4 2012, 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$46.37 - $142.91
- Walker®Oxygen SensorAudi A4 / A4 Quattro 2012, Oxygen Sensor by Walker®. Position: Downstream. 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....Makes installation quick and easyOptimal OE-style fit and quality$118.93
- Delphi®Oxygen SensorAudi A4 2.0L 2012, Oxygen Sensor by Delphi®. Position: Rear. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and aftermarket engineers partnering together to...Resists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long lifePatented sensors construction and design$125.23
- Original (OEM)Emission Control PartsAlong with power, your engine produces carbon monoxide, oxide of nitrogen, hydrocarbons, and other hazardous gases that cause harm to the environment. To minimize air pollution, all vehicles are equipped with an emission control system...
- Audi OEEmission System - Emission ComponentsAudi A4 2012, Emission System - Emission 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 want...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$16.84 - $502.15
- Vaico®Crankcase Breather Oil TrapAudi A4 / A4 Quattro 2012, Crankcase Breather Oil Trap by Vaico®. Quality results from the consistent pursuit of a customer-focused strategy. Clients wishes are in the center of business. Vaico aim: the best quality for your...Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment$91.61
- Vemo®EGR System Gasket SetAudi A4 2.0L 2012, EGR System Gasket Set by Vemo®. Grade: Aftermarket. Vemo products are made by high-quality materials and undergo strict quality tests. They are, thereby, the perfect alternative to the original part.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$66.85 - $114.67
- Denso®Air Fuel Ratio SensorAudi A4 2.0L 2012, Air Fuel Ratio Sensor by Denso®. Position: Upstream. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch products designed by...Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies$116.14
- Standard®Engine Oil SeparatorAudi A4 2.0L 2012, Engine Oil Separator 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 integrity...Made with precision and quality in mindDesigned to meet your specific needs$167.63
- NTK®Air Fuel Ratio SensorAudi A4 2.0L 2012, Air Fuel Ratio Sensor by NTK®. Position: Upstream. Location: B1S1. Air fuel ratio sensors utilize a sophisticated sensing element that enables them to produce a precise output in proportion to the air fuel ratio. AFR...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$91.04
- GPD®Exhaust Gas Temperature (EGT) SensorAudi A4 2.0L 2012, Exhaust Gas Temperature (EGT) Sensor by GPD®. Position: Front. The EGR pressure sensor works with the EGR valve to regulate the pressure of the EGR system. If pressure is low, the EGR valve will increase flow and vice...Designed to meet/exceed OE fit, form and function100% Tested for durability and performance$47.75
- URO Parts®Oil SeparatorAudi A4 / A4 Quattro 2012, Oil Separator 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$22.52 - $44.59
- Vaico®Engine Oil SeparatorAudi A4 / A4 Quattro 2012, Engine Oil Separator by Vaico®. Location: On Block. 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...Made with precision and quality in mindDesigned to meet your specific needs$40.70
- Vaico®Oil SeparatorAudi A4 / A4 Quattro 2012, Oil Separator 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, it is...Made with precision and quality in mindDesigned to meet your specific needs$133.03
- WVE®Engine Oil SeparatorAudi A4 2.0L CAEB Engine Gas 2012, Engine Oil Separator 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...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$121.50
- Vemo®Air Intake Control ValveAudi A4 2012, Air Intake Control Valve by Vemo®. Grade: OE. Vemo products are made by high-quality materials and undergo strict quality tests. They are, thereby, the perfect alternative to the original part.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$48.12
- WVE®Diverter ValveAudi A4 / A4 Quattro 2.0L CAEB Engine Gas 2012, Diverter Valve by WVE®. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in durability and...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$74.46
- URO Parts®Vapor Canister Purge ValveAudi A4 / A4 Quattro 2012, 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...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$29.13
Shop By Service Type
Popular Products
2012 Audi A4 Models
Popular Searches