This is a replacement AN #6 inlet fitting for a composite relieving style filter assembly or the maintainable filter assembly(P/N1090079).This style of fitting and filter only fits a FM-150,FM-150L, FM-200A, FM-200C FM-300B, FM-300R. The O-ring is a AN#8 o-ring.The Filter Assembly(1090267-C) is sold separately.
