New Genuine PAI Sensor P/N 050638. 

Alternative and other replacement reference part numbers:  Cummins 3967251.

Application:  Cummins 4B 3.9/ ISB /QSB / B 5.9 Natural Gas Engines Oil Pressure Sensor.

Please Contact us with the Engine Family and Engine Serial Number and Engine CPL, if you have any doubt this is the correct oil cooler, or please contact your local OEM dealership for correct part # to ensure correct oil cooler. 

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If you need any parts not found on our eBay store let us know, we may have the part in store and we don't mind making an eBay page for it.

We're an authorized dealer of PAI and Excel products, please let us know if there is any other parts you might need, thanks.