On this parts fiche the Washer(10x15x1.5) is the most specified component.
This Hose,front Bra is the most expensive of the items that make up this Front Brake Hose (dl650k7/k8/k9) assembly.
Some items from this specific schematic: Union, Clamp,fr Brake Hose,l, Clamp,fr Brake Hose, Washer(10x15x1.5).