[Vehicle Fitment]: "Upstream(B1S1)": Compatible with Audi A3 2017 L4 2.0L, A3 Quattro 2015-2017 L4 2.0L, S3 2015-2017 L4 2.0L, TT Quattro/TTS Quattro 2016-2018 L4 2.0L, Atlas 2018-2021 L4 2.0L, Atlas Cross Sport 2020-2021 L4 2.0L; Compatible with Volkswagen Golf R 2015-2018 L4 2.0L, GTI 2015-2018 L4 2.0L, Tiguan 2018-2019 L4 2.0L; "Upstream": Compatible with Volkswagen Beetle 2015-2018 L4 2.0L, For Jetta 2015-2018 L4 2.0L, Passat 2018 L4 2.0L [Vehicle Fitment]: "Upstream Right": Compatible with A8 Quattro 2013-2014 V8 4.0L, A8 Quattro 2015-2018 V8 4.0L(B1S1), A8 Quattro 2011-2012 V8 4.2L, RS7 2014 V8 4.0L, RS7 2015-2018 V8 4.0L(B1S1), S6 2013-2014 V8 4.0L, S6 2015-2018 V8 4.0L(B1S1), S7 2013-2014 V8 4.0L, S7 2015-2018 V8 4.0L(B1S1), S8 2013-2014 V8 4.0L, S8 2015 V8 4.0L(B1S1), S8 2016 V8 4.0L(B1S2), S8 2017-2018 V8 4.0L(B1S1) [Vehicle Fitment]: "Downstream": Compatible with Mercedes-Benz AMG GT 43 2021-2022 L6 3.0L, AMG GT 53 2019-2022 L6 3.0L, CLS450 2019 L6 3.0L, CLS53 AMG 2019 L6 3.0L, E53 AMG 2019 L6 3.0L [Reference Number]: 250-25112, 25025112 [Specification]: ① Wire Quantity: 5; ② Sensor Type: Heated; ③ Mounting Type: Threaded; ④ Connector Gender: Male; ⑤ Package Quantity: 1x Oxygen Sensor; ⑥ Packaging Type: Box