I just replaced my lift pump Tue. ( 08-14-01) I called Gateway Cummins (St Louis MO) and they told me they had 30 on order (new part number). Two of thier other sites had one each. Had to drive to Sikeston MO (114 miles) to get one.
3990105 lift pump $139. 08
4025182 wire harness $7. 13
I called Dodge and they told $414 for the pump and didn't say anything about the harness, plus it was going to take a day to get it from Star.
The old pump had 68,113 miles on it. I hope this one last longer.
Like others TDR members, I have noticed that the tach doesn't jump when the engine is at an idle as it did before changing the lift pump.