I work on the ship where we've got 2XCAT 3408. Currently having problem with fuel injector spillage line. One of the fuel connections shows excessive cavitation on its surface and fuel simply leaks through the cap nut. Problem is that I was not able to find pictured above part in the Spare Parts Catalogue. I would be grateful if anybody can give me any tips how to approach this problem? To be honest I don't even know how does that particular part is called.