All, I have a M3-20 in my C28 and I'm buying spares for the fuel system. I got the fuel water separator 2 Micron part and a spare engine fuel filter, but I'm curious about the part in between. Right next to the fuel water separator there is a part that the fuel runs through top to bottom. It is a bronzelike cylinder approx 1 1/2" in diameter and approx 6" high. There are no noticable markings. It shows up in the fuel system diagram in the manual but there's no mention of what it is. Any idea what this is and if a spare is needed? Thanks, Mike Elmore Windward Hull C28 - Hull #7