Just a FYI in case anybody does a search for the part number.

4921511

supersedes 4088390NX

$80 and change from cummins, about one third napa's price.

 

I sure do appreciate your post. My sender is bad. Well, i think so. My pressure goes up to about 75lbs when I switch the key on. I was about to buy one from the parts house. I keep forgetting about the cummins place. THANKS!!!!

Kip