Andrew Reynolds
Newbie
I have an LS Swapped 99 suburban and I got it all running but my fuel pressure at the rail is only 40psi so I am sure its my tired pump (247,000 miles) and I could probably replace it with a stock replacement. however i see that Walbro makes a 255lph drop in unit for around $200 Tu447hp and tu42hp although I am not sure of the difference. I recall seeing somewhere there was a replacement pump only instead of the whole module. Anyone have a part number for that?