Description:

[Vehicle Fitment]: Compatible with BMW 750i/750i xDrive/Alpina B7 2017-2019 V8 4.4L, M550i xDrive 2018-2019 V8 4.4L---Upstream Left or Right; Left fit B2S1 & Right fit B1S1. [Reference Number]: 250-25133, 25025133. [Specification]: Wire Quantity: 5; Sensor Type: Heated; Mounting Type: Threaded; Connector Gender: Female; Package Quantity: 1x Oxygen Sensor; Packaging Type: Box. [Quality Construction]: Manufactured from premium materials for a long lifespan; Quick and easy installation, requiring no special tools.