rashwor,
I have a 2004. 5 QC 2WD and I just replaced mine. I would assume they are the same. On my receipt it shows:
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52113300-AB BUMPER JO 23034004
I think the p/n is the 52113300-AB.
However, due to the price you may want to go an alternative route.
I special ordered the stops without asking the price, thinking how much could a simple bump stop cost. Heaven forbid the list price each was $43. 55.

Since I bought the truck there the parts guy let me have them for a mere $27. 95 apiece. Such a deal!!!! #@$%!
My original ones just crumbled away. When the new ones came, I think I know why. The material isn't rubber or at least not recognizable as such. It's some kind of light weight stuff and appears yellowish in color. It may be some type of recycled material for all I know.
I looked around on the internet trying to find some type of urethane ones but in a weak moment I ordered the OEM's without checking the price. Live and learn.
Anywy, good luck on your quest.
Sorry I don't have any idea on the Dodge p/n on the links, but I think Geno's has the links but they are expensive.
MAXX LINKS SWAY BAR LINKS ('03-'09) 2X2 2500/3500 IFS-Dodge Cummins Diesel Truck Accessories - Geno's Garage