When I replaced mine I used a dorman part # from oreillys that they had in stock. Worked great, no leaks. I used a funnel that I cut the bottom off to put it on over the threads (i cut it off at the right diameter so it fit just up to where the o-ring sits and no further).I have the same issue but on a 1993 3.0 standard old GL. There is a captive O-ring inside the hose fitting at the high pressure hose end and you can't replace it, you have to buy a new hose. Kind of stupid but what do I know, I am not a member of SAE. Can anyone suggest a good local source for those Teflon O-rings on the outer threads? I have a couple of NOS pumps in stock and they are not with them.