Audi Q5/A4 Oxygen Sensor 8R0906262 Universal Replacement 0258027115 Direct Fit Installation

This oxygen sensor is designed for 2010-2017 Audi Q5 (2.0T/3.2L) and 2009-2016 Audi A4 (B8, 2.0TFSI), also compatible with EA888 engines in some VW models. Core function is to monitor exhaust oxygen in real time and feed back to ECU to adjust air-fuel ratio for efficient burning and reduced emissions. OEM numbers include 8R0906262, 8R0906262E, 0258027115 and 0258027114 for cross-checking with OEM systems. Replacement difficulty medium; use a specialized oxygen sensor socket to avoid thread damage; apply anti-seize before installation to extend life. This sensor is a direct OEM replacement with no wiring modifications and can resolve common issues like idle instability, rising fuel consumption, and MIL; suitable for bulk purchases for repair shops or fleets.