Compatible with heavy-duty diesel emission aftertreatment systems using OEM references:

• 1275101167
• 1277023621 (common related cross reference)
• 0281008069
• Bosch PM sensor family 0 281 008 069

Typical applications include:

• Mercedes-Benz commercial / truck diesel emission platforms
• Cummins 12V diesel engine emission systems
• Heavy-duty diesel vehicles with DPF soot monitoring architecture
• Selected Daimler industrial / export emission configurations

Function:
Installed after the diesel particulate filter (DPF), this sensor measures soot concentration in the exhaust stream. The ECU uses this signal to:

• verify DPF regeneration efficiency
• detect soot slip or filter failure
• optimize regeneration timing and duration
• support emissions compliance in heavy-duty diesel systems

⚠️ Important
This is a DPF particulate matter (PM) sensor, not a NOx or pressure sensor. It directly measures soot concentration downstream of the diesel particulate filter and is critical for heavy-duty Mercedes/Cummins emission control and regeneration strategy.

Fitment must always be confirmed strictly by OEM number (1275101167 / 0281008069), as this sensor is used across multiple heavy-duty platforms and can vary by ECU calibration and engine application.