Standard Ignition NOX051 Nitrogen Oxide (NOx) Sensor - Upstream

NOx Sensor for Emission Control

The Standard Ignition NOX051 is a nitrogen oxide sensor used in emission control systems to monitor exhaust NOx levels and support accurate aftertreatment operation. Built with a female rectangular/oval connector, male blade terminals, and a 6-terminal layout, it is a direct-fit style replacement for vehicles that require this connector configuration.

Key Features

• Nitrogen oxide (NOx) sensor for emission control diagnostics
• Female connector with 1 connector interface
• Rectangular and oval connector shape for application-specific fitment
• 6 male blade terminals for secure electrical connection
• Standard Ignition NOX051 replacement part number for service matching

Detailed Description

Standard Ignition NOX051 is engineered for exhaust aftertreatment systems that rely on NOx feedback to manage emissions performance. The sensor’s connector design and terminal layout are important for proper electrical integration, especially on vehicles that use a 6-blade terminal arrangement. For buyers searching for a Standard Ignition NOx sensor, NOX051, or a nitrogen oxide sensor for emission control repair, this part provides the specifications needed to match the original connection style. This part cross-references DNX051 and DNX1051 for the same application. It is a relevant service part for select BMW and Mercedes-Benz diesel emission control repairs where the NOx sensor connection format matches the vehicle harness.

What It Helps Address

• NOx sensor fault codes related to exhaust aftertreatment monitoring
• Check engine lights triggered by emission control sensor failure
• Incorrect nitrogen oxide readings from a worn or damaged sensor
• Diesel emission system performance issues tied to sensor signal loss
• Connector or terminal mismatch during NOx sensor replacement

Installation Notes and Tips

Verify the connector shape, terminal count, and terminal gender before installation. Match the vehicle harness to the female connector and 6-blade terminal layout on the NOX051 to confirm proper fitment. For BMW and Mercedes-Benz applications, compare the original sensor part number and connector style before replacing the unit. Clear stored diagnostic trouble codes after installation and confirm the emission system operates normally.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and emission-related service parts. The NOX051 is built to meet the application-specific connector and terminal requirements needed for accurate NOx sensor replacement.