On this parts fiche the Washer-seal,10.1x14.5 is the most specified component.
Some items from this specific schematic: Hose-brake,hu-fr M/cy, Hose-brake,hu-fr Cali, Bracket, Bolt,banjo,10x22.
fourteen components are listed in the schematic for this Er400dkf Z400 2019 Europe,middle East,africa Brake Piping .