[FPB111]

Not AC. Trying to remember, I think maybe part of breather/AOS. Regardless it is a plastic union with a screw tab to hold it to the engine out of the way, many have been broken and replaced with brass barbs from Home Depot.

#19 in post 8
http://forums.rennlist.com/rennforums/996-forum/593032-oil-leak-and-parts-identification-sil-vous-plait.html

Found it:
http://www.pelicanparts.com/cgi-bin/ksearch/pel_search.cgi?SUPERCAT_FLAG=&make=&please_wait=N&forumid=&threadid=&command=DWsearch&description=99610622652&I1.x=8&I1.y=10&FILTER_996J=ON&FILTER_911E=ON&FILTER_TECH=ON&FILTER_SUPP=ON&FILTER_ACCE=ON&FILTER_CARE=ON&FILTER_STUF=ON&FILTER_PERF=ON&FILTER_MISC=ON&FILTER_GADG=ON&FILTER_TOOL=ON

99610622652