Downstream Lambda Sensor – A0005428004

Description

The Genuine Downstream Lambda Sensor (Part Number: A0005428004) is an original Mercedes-Benz exhaust emission component installed after the catalytic converter. Its primary function is to monitor exhaust gas oxygen levels and evaluate catalytic converter efficiency, ensuring optimal emissions control and compliance with factory standards.

Manufactured to Mercedes-Benz OEM specifications with precision sensing elements and heat-resistant wiring, this genuine lambda sensor delivers accurate readings, fast response times, and long service life. A faulty downstream sensor can trigger check engine lights, emission faults, or poor fuel efficiency. Replacing it with a genuine sensor restores proper emissions monitoring and engine management performance.