One of the advantages of this electric lift pump is it circulates the fuel which gets the air out of the system. This pump is why you put the fuel filters on dry with a Cummins engine.
OP, you should be abe to buy the gasket that goes between the lift pump and it's base as it will solve your leaking problem. It will be much easier than replacing the entire unit.
Here is a good guide with the part Part Number 4928511 of the larger/older style gasket which your 02 probably has.
*PS, the new pump has more openings than needed so you will need to buy some plugs to fill the extra holes if you cannot buy just the gasket.
