Hopefully someone can help me I bought a fuel pump assembly online when it came in I went to install it only to find that my truck has the walbro pump can I use the regular pump assembly that I have or is there a difference in the pressures there is a pigtail on the truck where it can fit the 6pin or the 4 pin is there a diffence

 

Why are you replacing the pump?

If the module hasn't been modified for the Walbro pump, the new one should go right in........

 

It has the walbro pump as the original

 

So far as I know, the walbro pumps never came stock.......