It's the fitting that goes into the feed side of the rail; -10AN on one side of the adapter and the banjo fitting for the stock fuel line on the other side. It seems STR's site isn't working and i'd prefer not to spend the extra $ on a new fuel line from filter to rail. Any ideas are appreciated!

 

I know Aeroquip and others offer similar fitting. If the fitting is the same as for the AEM fuel rail, then you can order it directly from summit.

Here is a listing of what banjo aeronautical fittings they have:

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