Volkswagen Audi NOx Sensor 06F907807F/06F907807D 5WK96603B

Diesel NOx sensor for VW-Audi, part numbers 06F907807F/06F907807D (including 5WK96603B), located near the catalyst or DPF; monitors exhaust NOx levels in real time to optimize combustion and SCR efficiency. Fits 2.0TDI and 3.0TDI platforms in Passat, A4, A6; installation difficulty: medium; labor about 1–1.5 hours; clean the sensor connectors and adhere to torque spec during installation.