I WENT TO NAPA AND THEY DO NOT CARRY IT NOR CAN THEY ORDER IT I SAW IN ONLINE AT NAPA ALSO NO LUCK ANYWHEREI want to say that is not an EGR valve but the transducer. See #18 in the shot below.
Of course having the part number and knowing what they call it, assuming I am right, did not help to find one.
Googling an older part number I found, 53004890, did yield this though.
But I can't seem to find the part on the RockAuto site.
I crossed the number at the Napa site and came up with this: