Description
EGR differential pressure sensor crossing to Cummins 4358939, used on Cummins ISX12 and ISX15 engines (and ISL/ISC/QSL family) to monitor pressure across the EGR cooler so the ECM can trim EGR flow and trigger fault codes when the cooler is plugged. The 3-pin sensor uses M8 x 1.25 mounting threads with integral O-rings and crosses to Cummins 2872424, 2872210, 2871961, and 4307166.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 4358939 (Cummins crossover) |
| Part Type | EGR Differential Pressure Sensor |
| Engine Compatibility | Cummins ISX12, ISX15 (also ISL, ISC, QSL applications) |
| Mounting Thread | M8 x 1.25 x 25 mm with O-rings |
| Connector | Rectangular, 3-pin |
| Overall Length | 2.75 in |
| Color/Finish | Black / Blue |
Cross References
This part replaces or is equivalent to the following part numbers:
- Cummins: 4358939, 2872424, 2872210, 2871961, 4307166
- PAI: 050738
Applications
This EGR differential pressure sensor fits the following engines:
- Cummins ISX15 / X15 (EPA10/EPA13)
- Cummins ISX12 / ISX12G
- Cummins ISL, ISC, QSL family applications
Representative vehicles using these engines:
- Freightliner Cascadia, Coronado, Columbia
- Kenworth T660, T680, T800, T880, W900 (Cummins-spec)
- Peterbilt 386, 389, 567, 579 (Cummins-spec)
- International ProStar, LoneStar, LT (Cummins-spec)
- Western Star 4900, 5700 (Cummins-spec)
Verify your engine serial number and existing sensor part number before ordering. Some EPA tier transitions changed sensor calibration.









