-
files/12_ff3c0677-23d8-404c-af84-05d39fec73a5.jpg
Fitment
GM diesel vehicles with SCR AdBlue Euro 5 Euro 6 emission system including
- Chevrolet Silverado 2500HD 6.6L Duramax diesel (2011–2013 LML platform)
- Chevrolet Silverado 3500HD 6.6L Duramax diesel
- GMC Sierra 2500HD 6.6L Duramax diesel
- GMC Sierra 3500HD 6.6L Duramax diesel
- Selected GM heavy-duty diesel SCR systems (LML platform)
OE reference
12638378
5WK96645B
12665216 (related variant reference)
12671387 (alternate OE cross reference)
FAQ
What is this NOx sensor used for
It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system
Is this inlet or outlet sensor
It is used in SCR system and may function as inlet or outlet depending on exhaust configuration
Are all 12638378 sensors interchangeable
No GM NOx sensors are ECU coded and must match exact OE number and calibration version
What system does it work with
SCR Selective Catalytic Reduction system using AdBlue injection for diesel emission compliance
What are common failure symptoms
Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults
Fitment
GM diesel vehicles with SCR AdBlue Euro 5 Euro 6 emission system including
- Chevrolet Silverado 2500HD 6.6L Duramax diesel (2011–2013 LML platform)
- Chevrolet Silverado 3500HD 6.6L Duramax diesel
- GMC Sierra 2500HD 6.6L Duramax diesel
- GMC Sierra 3500HD 6.6L Duramax diesel
- Selected GM heavy-duty diesel SCR systems (LML platform)
OE reference
12638378
5WK96645B
12665216 (related variant reference)
12671387 (alternate OE cross reference)
FAQ
What is this NOx sensor used for
It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system
Is this inlet or outlet sensor
It is used in SCR system and may function as inlet or outlet depending on exhaust configuration
Are all 12638378 sensors interchangeable
No GM NOx sensors are ECU coded and must match exact OE number and calibration version
What system does it work with
SCR Selective Catalytic Reduction system using AdBlue injection for diesel emission compliance
What are common failure symptoms
Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults
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