2018 Audi A8 Emission Control Parts
- TRQ®O2 Oxygen SensorAudi A8 2018, O2 Oxygen Sensor by TRQ®. TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for improved...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$35.95 - $71.95Save: 5%$34.15 - $68.35
- Bosch®Narrow-band Oxygen SensorAudi A8 2018, 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 oxygen...OE-EquivalentOE Style connectors and wire lengths$43.46 - $90.37
- Walker Products®Oxygen SensorAudi A8 2018, 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 deliver...High quality at an affordable priceExpertly made from premium materials$70.18 - $199.94
- Bosch®Premium Oxygen SensorAudi A8 2018, Premium 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 Sensor from Bosch...OE Identical ConnectorCompact Design$49.31 - $108.82
- Walker Products®Premium Oxygen SensorAudi A8 2018, Premium Oxygen Sensor by Walker Products®. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original equipment specifications and test requirements. The oxygen...Improved Engine Response & PerformanceLower Emissions$85.66 - $98.55
- Genuine®Crankcase Vent ValveAudi A8 Quattro 4.0L 2018, Crankcase Vent Valve 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$272.47
- Bosch®Premium Wideband Oxygen SensorAudi A8 3.0L 2018, 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$159.96
- Walker Products®Wideband Premium Oxygen SensorAudi A8 2018, Wideband Premium Oxygen Sensor by Walker Products®. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original equipment specifications and test requirements. The...High quality at an affordable priceExpertly made from premium materials$113.59 - $184.77
- Audi OEEmission System - Emission ComponentsAudi A8 2018, 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$29.20 - $1,098.63
- Audi OEEmission System - Emission ComponentsAudi A8 2018, 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$11.01 - $1,000.10
- Audi OEEmission System - Emission Components (3.0L)Audi A8 3.0L 2018, 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...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$17.65 - $1,098.63
- Audi OEEmission System - Emission Components (Sensors)Audi A8 2018, Emission System - Emission Components (Sensors) 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...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$62.08 - $726.14
- ACDelco®Gold™ Oxygen SensorAudi A8 2018, Gold™ Oxygen Sensor by ACDelco®. Position: Upstream. 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$141.38 - $159.62Save: up to 16%$119.16 - $135.68
- 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 Components (Exhaust Cooler)Audi A8 2018, Emission System - Emission Components (Exhaust Cooler) 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...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$2.38 - $1,043.91
- Standard®Intermotor™ EGR ValveAudi A8 2018, Intermotor™ EGR Valve 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 to...Made with precision and quality in mindDesigned to meet your specific needs$243.34
- NTK®Air Fuel Ratio SensorAudi A8 Quattro 2018, Air Fuel Ratio Sensor by NTK®. 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 sensors provide the ECU with an...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$117.56 - $184.70
- Dorman®OE Solutions™ Secondary Air Injection Check ValveAudi A8 3.0L 2018, OE Solutions™ Secondary Air Injection Check Valve by Dorman®. This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for...Direct replacement - this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehiclesRestores functionality - this valve is made to fit and fully restore part functionality after the original valve fails$146.55 - $189.38
- Bosch®Air Fuel Ratio SensorAudi A8 4.0L 2018, Air Fuel Ratio Sensor by Bosch®. Position: Upstream. 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...High quality at an affordable priceExpertly made from premium materials$77.78 - $95.50
- URO Parts®Oil SeparatorAudi A8 4.0L 2018, 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 work as...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$151.98
- Febi®Crankcase Vent ValveAudi A8 L TDI 2018, Crankcase Vent Valve by Febi®. 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$23.43
- Dorman®OE Solutions™ Secondary Air Pressure SensorAudi A8 Quattro 2018, OE Solutions™ Secondary Air Pressure Sensor by Dorman®. This evaporative emissions system pressure sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered...Direct replacement - this evaporative emissions system pressure sensor is designed to match the fit and function of the original sensor on specified vehiclesIdeal solution - this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction$93.26
- Dorman®OE Solutions™ Exhaust Gas Temperature (EGT) SensorAudi A8 Diesel 2018, OE Solutions™ Exhaust Gas Temperature (EGT) Sensor by Dorman®. EGT sensors frequently seize in the exhaust bung, making replacement difficult and damaging the bung. This Dorman OE FIX solution directly replaces...Convenient solution - this replacement EGT sensor comes with a bung repair kit in case the bung is damaged during removalCost-effective fix - bung repair kit allows direct repair of damaged bung instead of replacing entire exhaust pipe$49.71 - $82.99
- Delphi®Exhaust Gas Temperature (EGT) SensorAudi A8 Diesel 2018, Exhaust Gas Temperature (EGT) Sensor by Delphi®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$65.09 - $97.31
- Genuine®Crankcase Breather HoseAudi A8 Quattro 2018, 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...Made with precision and quality in mindDesigned to meet your specific needs$11.07 - $28.66
- Dorman®OE Solutions™ Exhaust Gas Temperature Bung Repair KitAudi A8 Diesel 2018, OE Solutions™ Exhaust Gas Temperature Bung Repair Kit by Dorman®. When an EGT sensor bung rusts, the typical solution has been to replace the entire exhaust pipe. This Dorman OE FIX kit allows direct replacement...Cost-effective fix - this EGT sensor bung repair kit allows direct replacement of only a failed bung, rather than an entire exhaust pipeWeld-on plate - bung comes with steel plate for repairing pipe if damaged during bung removal$18.23
- Davico®Direct Fit Catalytic ConverterAudi A8 4.0L 2018, Catalytic Converter by Davico®. Converter Configuration: Direct Fit. With 2 O2 Sensor Ports. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic...$430.61 - $435.95
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterAudi A8 Quattro 2018, OEM Grade 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 is part of the...$856.00 - $1,049.00
- Audi OEExhaust System - Exhaust ComponentsAudi A8 2018, 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 want to...Genuine OE replacement for your specific Audi modelDesigned to bring your vehicle back to its pristine condition$12.27 - $4,010.60
- Audi OEExhaust System - Exhaust Components (3.0L)Audi A8 3.0L 2018, 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$12.27 - $3,075.84