FITMENT:
Compatible with Cummins heavy-duty diesel engines equipped with SCR (AdBlue/DEF) emission systems, typically used in on-road and industrial applications such as:

• ISB / ISL / ISX series (select SCR configurations)
• Peterbilt / Kenworth / Freightliner applications (depending on calibration)
• Industrial 24V Cummins SCR systems

OEM reference number: 5593958

This is a NOx emissions sensor used in SCR aftertreatment systems to measure nitrogen oxide levels in exhaust gas and control AdBlue dosing strategy.

Based on Cummins parts catalog structure, this sensor belongs to the SCR “inlet/outlet NOx sensor family” used for closed-loop emissions control.

FUNCTION:

• Measures nitrogen oxide (NOx) concentration in exhaust stream
• Sends real-time data to ECM/ACM via CAN/J1939 communication
• Controls DEF (AdBlue) injection for SCR catalyst efficiency
• Ensures EPA / Euro emissions compliance and reduces engine derate risk

INSTALLATION POSITION:

• SCR system inlet or outlet (depends on engine configuration)
• Mounted in exhaust pipe between DPF and SCR catalyst or after SCR unit

FAQ:

Q1: Is this inlet or outlet sensor?
A1: It depends on the engine build. Cummins 5593958 can be used in SCR inlet or outlet positions depending on application.

Q2: What symptoms indicate failure?
A2: Check engine light, SCR/DEF warning, reduced engine power, incorrect NOx readings, or limp mode.

Q3: Is it plug-and-play?
A3: Yes, but some systems require SCR reset or ECM adaptation after installation.

Q4: Is this compatible with all Cummins 24V engines?
A4: No, compatibility depends on engine family and aftertreatment configuration—OEM number must be matched exactly.

Q5: What technology does it use?
A5: It is a smart sensor module communicating via CAN/J1939 network for real-time emissions feedback.