MAN Truck NOx Sensor 5WK96783B 51.15408-0018 Direct Installation

When a Mann truck instrument cluster shows check engine light with power drop, high fuel consumption or elevated emissions, nitrogen oxide sensor aging or failure is likely; it cannot accurately monitor NOx concentration. This sensor, when working, feeds back oxygen content to ECU to ensure SCR dosing of urea to reduce emissions and maintain engine performance. Suitable for Mann trucks; OEM numbers 5WK96783B, 51.15408-0018, 5WK96783A and 51154080011; direct replacement. Install with clean sensor threads and torque to specification to avoid signal interference or leaks.