filter and FPR. The FPR was the A1000 and you will need 2 -6 to -6 female O-ring adapters for it. The filter was the 12304 number and requires 2 -10 to -6 o-ring adapters. The hardline fittings are 5/16" compression part number 165056erl. I got all my parts at summit. I only have a handful of pulls on it thus far but no leaks, all the fittings worked great with minimal fuss.