Fitment

Fits for:

• Cummins ISX / ISX15 diesel engines (EPA10 / Euro VI SCR systems depending on application)
• Freightliner, Kenworth, Peterbilt, International, Volvo (Cummins engine applications)
• Engine: Heavy-duty SCR (AdBlue / DEF) aftertreatment systems
• Position: Exhaust NOx sensor (inlet or outlet depending on SCR configuration)
• OE / Cross References: A2C12500400-01 / SNS743 / EA0111531628 / A0111531628 / RA0111531628 / 4326873 / 5WK9-series NOx sensor family

FAQ

Q1: Are A2C12500400-01 and SNS743 the same sensor?
A1: Yes. A2C12500400-01 is the manufacturer OE reference, and SNS743 is the sensor family code used for the same NOx sensor module in SCR systems.

Q2: What engines use this sensor?
A2: It is commonly used on Cummins ISX / ISX15 engines in heavy-duty trucks such as Freightliner Cascadia, Kenworth, Peterbilt, and International models equipped with SCR (AdBlue) systems.

Q3: Is this inlet or outlet sensor?
A3: It depends on SCR layout. On many Cummins ISX systems, this sensor family is used as either inlet or outlet NOx sensor, but most commonly as outlet in EPA10 configurations.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) levels in the exhaust and sends real-time data to the ECU, which controls AdBlue dosing to reduce emissions and maintain SCR efficiency.