Compatible with GM diesel emission aftertreatment systems using OEM references:

• 12685369
• Bosch 0 281 007 262
• Bosch 0 281 007 263

Typical applications include:

• Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax diesel (L5P)
• GMC Sierra 2500HD / 3500HD 6.6L Duramax diesel
• GM heavy-duty pickup diesel platforms with DPF soot monitoring systems (2017–2019 range)

Functionally, this sensor is used to:

• measure soot concentration after the DPF
• confirm regeneration effectiveness
• detect filter degradation or soot breakthrough
• optimize regeneration strategy for L5P Duramax emissions 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 essential for GM Duramax emissions control and regeneration logic.

Fitment must always be confirmed strictly by OEM number (12685369), as GM heavy-duty diesel platforms vary by model year and ECU calibration updates.