Subaru engine fuel injectors

12 Jan 2006 Subaru engine fuel injectors

Update 20210918: I didn’t install the Eggenfellner Subaru engine, so any post that references that can be ignored or used as a cautionary tale about how to avoid wasting many years and $50k.

Here are a couple of pictures of one of my fuel injectors. I removed it to try to find the final fuel injector filter. I’m trying to figure out what the coarseness of this final filter is, so that I can be sure that the filters I use in my fuel system match.
I vaguely recall that the final filter before the fuel rail should be a 10 micron filter, but I can’t really find a good reference. Clearly if the final filter is more coarse than the little fuel injector screens, then they could get clogged up pretty quickly. I want to avoid this at all costs.

If I can’t find any better information, then I just use the “fuel injection filters” that I’ve previously purchased.