[Vehicle Fitment]: "Downstream": Compatible with Audi A3 2015-2016 L4 1.8L (B1S2), A3 2017-2020 L4 2.0L (B1S2), A3 Quattro/S3 2015-2018 L4 2.0L (B1S2), A8 Quattro 2015-2016 W12 6.3L (Cylinder 1,3,5), TT/TTS Quattro 2016-2018 L4 2.0L (B1S2); Compatible with Volkswagen Atlas 2018-2021 L4 2.0L (B1S2), Atlas Cross Sport 2020-2021 L4 2.0L (B1S2), Golf 2015-2018 L4 1.8L (B1S2), Golf Alltrack 2017-2019 L4 1.8L (B1S2), Golf R/GTI 2015-2018 L4 2.0L (B1S2), Golf SportWagen 2015-2019 L4 1.8L (B1S2) [Vehicle Fitment]: "Downstream Left and Right": Compatible with Audi R8 2017-2018 V10 5.2L (B2S2), R8 2020-2021 V10 5.2L (B2S2) --- Please see Compatibility description for additional fitment information [Reference Number]: 250-241142, 250241142 [Specification]: ① Wire Quantity: 4; ② Sensor Type: Heated; ③ Mounting Type: Threaded; ④ Connector Gender: Female; ⑤ Package Quantity: 1x Oxygen Sensor; ⑥ Packaging Type: Box [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind