I am having the oil pressure sending unit problem in my 99 3500. I went to the Dodge dealer where they wanted $305 for a replacement unit. I then checked the TDR website for a part no. and came up with Cummins part no. 3408428, which it requested from the Cummins place. They said the unit no. had been superseded with part no. 4076930, which also requires part no. 3164755 (wiring harness which plugs into 4076930 and cover that goes over the old sender unit connection) This new "one wire" harness plugs into the Deutsch OEM connector at cavity K and the old sensor harness and plug are not even used!! They are also refering to the 4076930 as a "switch" instead of a sensor and are requiring a "recalibration" of the ECM with the installation of this "switch"!! This action will provide for a constant 55# registered on the guage.
Bottom line is is this the correct sensor, or switch for this engine?? I am not too keen on having the computer recalibrated by the Dodge Boys!!!
'97 2500 5 spd., white, 2WD regular cab., '06 3500 6 spd., white, 2WD, dual whl., quad cab. '44 "A" John Deere, '49 "R" John Deere, '66 5020 John Deere