沃尔沃氮氧传感器 22303391 5WK97366 热销跨境配件

Volvo FH/FM series trucks and some passenger diesel models use a nitrogen oxide sensor (OEM 22303391 and 5WK97366) installed near the SCR catalyst on the exhaust pipe, monitors NOx concentration in real time and feeds data to the ECU, precisely controlling urea injection to reduce emissions and optimize engine performance. Installation is medium difficulty; estimated labor 30-45 minutes; avoid wiring damage. If engine malfunction light on, abnormal urea consumption, or power drop occur, this sensor should be inspected as a priority.