Description
PAI Industries replacement for Cummins 4984575 is a crankcase pressure sensor used on Cummins 4B 3.9L, ISB, QSB, ISD 4.5L, and ISF 2.8L/3.8L engines, where it monitors blow-by pressure and feeds the ECM data used to detect crankcase ventilation faults and excessive blow-by. This 3-pin rectangular sensor ships with O-ring 321437 and supersedes Cummins 4954400, 5462277, and 4358993 in the same role.
Signs You Need a New Crankcase Pressure Sensor
- Crankcase pressure / CCV fault codes (SPN 101)
- Engine derate or check engine light tied to crankcase pressure
- Erratic crankcase pressure readings on diagnostic scan tool
- Suspected sensor failure with verified-clean breather/ventilation system
- Visible damage or contamination on the existing sensor body or connector
Specifications
| Manufacturer | PAI Industries (Cummins 4984575 replacement) |
|---|---|
| Part Number | 4984575 |
| Part Type | Crankcase Pressure Sensor |
| Pin Count | 3 |
| Connector Shape | Rectangular |
| Overall Length | 2.45 in |
| Color | Black |
| Includes | O-Ring 321437 |
| Engine Compatibility | Cummins 4B 3.9L, ISB, QSB, ISD 4.5L, ISF 2.8L, ISF 3.8L |
Cross References
This crankcase pressure sensor replaces or is equivalent to the following part numbers:
- Cummins: 4984575, 4954400, 5462277, 4358993
Applications
This crankcase pressure sensor fits the following Cummins engines:
- Cummins 4B / 4BT 3.9L
- Cummins ISB 5.9L, 6.7L
- Cummins QSB (off-highway / industrial)
- Cummins ISD 4.5L
- Cummins ISF 2.8L
- Cummins ISF 3.8L
Verify your engine serial number and connector style (3-pin rectangular) before ordering.
