Description
PAI Industries 050774 inlet NOx sensor for Cummins ISB 6.7L diesel engines — the upstream sensor mounted ahead of the SCR/DPF that monitors nitrogen-oxide levels and feeds the engine ECM data used for DEF dosing and emissions-compliance closed-loop control. Aftermarket replacement for Cummins 4326873, 2872948, and 5295473, sold as a 12V kit with high-temperature anti-seize compound for installation. M20×1.5 thread, 4-pin connector, 35.5 in (910 mm) cable.
Signs You Need a New NOx Sensor
- Engine fault codes referencing inlet NOx sensor (SPN 3216, SPN 4364)
- SCR efficiency / DEF dosing fault active
- Derate or limp-mode triggered by aftertreatment system
- Failed DESA emissions inspection
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 050774 |
| Part Type | Inlet NOx Sensor (Upstream of SCR) |
| Engine Compatibility | Cummins ISB 6.7L |
| Voltage | 12V |
| Thread | M20 × 1.5 |
| Connector | 4-pin |
| Cable Length | 35.5 in (910 mm) |
| Included | High-temperature anti-seize compound |
Cross References
This part replaces or is equivalent to the following part numbers:
- Cummins: 4326873, 4326873RX, 2872948, 2872948NX, 5295473
- Continental: 5WK96742B
- Dorman: 904-6011, 904-6030
- Mopar: 68210084AA
- International: 7099783C1, 7099783C2
Applications
This inlet NOx sensor fits the following engines:
- Cummins ISB 6.7L (2013-2018)
Representative vehicles using these engines:
- Dodge Ram 2500, 3500, 4500, 5500 (2013-2018)
- Freightliner 108SD, Business Class M2 (2013-2020)
- International DuraStar, WorkStar with ISB 6.7L
- IC Bus CE Series, RE Series
- Blue Bird Vision, All American
- Gillig Low Floor transit buses
- Ford F-650, F-750 with Cummins ISB 6.7L
Verify your sensor location (inlet/upstream vs outlet/downstream of SCR) before ordering — inlet and outlet NOx sensors look similar but are not interchangeable.
