It is not the correct p/n for an 03-07 5. 9 HPCR. You need Cummins p/n 2881805. That one is for an older 5. 9 ( one with less HP than yours) One of the differences is the volume it flows. The last thing you want is not enough cooling. David
would the newer common rail pump be a signifant up-grade on a modified 12v or early (`99) 24v ??I agree with David, it's not right for your truck.
Yours is a different pump and should have a sell price from Cummins of $135. 00 or so just for a rough idea.
Mike.