Bosch 0281008677 Nitrogen Oxide (NOx) Sensor for SCR Emissions Systems

The Bosch 0281008677 is a genuine OE-quality Nitrogen Oxide (NOx) sensor engineered to deliver precise, real-time measurement of nitrogen oxide concentrations in the exhaust stream. As a critical component of modern emissions control systems, this sensor enables the vehicle's ECU to accurately regulate DEF (Diesel Exhaust Fluid / AdBlue®) dosing within the Selective Catalytic Reduction (SCR) system, ensuring both peak performance and regulatory compliance.

Key Features:

• Genuine Bosch OE Quality — manufactured to the same standards as original equipment sensors, ensuring a direct, reliable replacement
• Ceramic Amperometric Double-Chamber Design — the electrochemical sensor element provides high measuring accuracy, fast operational readiness, and continuous signal availability
• Real-Time NOx Monitoring — delivers accurate exhaust gas data to the ECU for precise DEF injection control and efficient SCR catalyst operation
• Supports On-Board Diagnostics (OBD) — compatible with onboard emissions monitoring systems to help prevent and diagnose fault codes related to emissions performance
• Compatible with 12V and 24V Systems — suitable for a range of passenger and commercial vehicle applications
• Durable Construction — built to withstand the high-temperature, high-stress environment of diesel exhaust systems over an extended service life

A failed or degraded NOx sensor can trigger check engine lights, cause excessive DEF consumption, reduce fuel efficiency, and result in the SCR system falling out of emissions compliance. Replacing a faulty sensor with a genuine Bosch unit restores proper system function and helps avoid costly repairs down the line. The sensor consists of a probe and sensor control unit (SCU) connected via a wiring harness, with a retaining screw for straightforward installation.