06A 906 265 AL: Oxygen sensor for Volkswagen Golf 4

The oxygen sensor is a key component of the engine management system: it measures the oxygen content of exhaust gases to allow the engine control unit to continuously adjust the air-fuel mixture. On the Volkswagen Golf 4, its proper operation directly affects engine performance and compliance with original emission standards. As part of the restoration or routine maintenance of a classic Volkswagen Golf 4, replacement with a new part allows you to restore behaviour in line with manufacturer specifications. It is an essential preventive or corrective intervention to preserve the reliability of this vehicle over time.