Dorman 904-6043 NOx Sensor Inlet of Diesel Particulate Filter

The Dorman 904-6043 is a direct replacement nitrogen oxide (NOx) sensor designed to monitor emissions at the inlet of the diesel particulate filter (DPF). This sensor plays a critical role in diesel exhaust aftertreatment systems by measuring NOx levels before they enter the particulate filter, allowing the vehicle's engine control module to optimize combustion and emissions control strategies.

Key Features:

• Direct fit replacement for original equipment on specific diesel vehicles
• Monitors nitrogen oxide levels at the DPF inlet for accurate emissions control
• Helps maintain proper diesel exhaust fluid (DEF) injection and SCR system operation
• Engineered to meet or exceed OEM performance standards
• Includes necessary connector for straightforward installation

When NOx sensors fail, they can trigger check engine lights, reduce engine performance, and cause the vehicle to enter limp mode. Replacing a faulty sensor with this Dorman unit restores proper emissions monitoring and helps keep your diesel engine running efficiently while meeting emissions standards.