The fuel filter connection is Saginaw O-ring flare / GM Fuel line flare tube nut in M16 x 1.50 for 3/8” tube. Based on the photo, I do not believe that Dorman part is correct. That looks like an inverted flare tube nut.
Here is a short list of different manufacturer / retailer part #’s that I am confident are correct.
- FMSI 3008
- Inline Tube TN33
- AGS FLR-008C
When I get time, I will be updating an older thread of mine with parts info for a brake and fuel line replacement I completed.
eta
There is more to this than you realize. That is a difficult flare to make without quite good flaring tools. Even with good flaring tools and ni-cop, I find PTC (push to connect) flares quite challenging in 3/8". Those will likely be needed also. You can purchase pre-fabbed repair kits w/ the flares already done, though. I will try to update my thread within a few days with all the parts I used. It is in this sub-forum.