The component with the lowest price in the FRONT BRAKE PANEL schematic is the Washer,plain, 6mm.
A sample from the products for the Front Brake Panel include: Washer,plain 14mm, Dust-seal, Brake, Washer,spdmt., Nut,thin 6mm.
twenty-eight components are listed in the schematic for this Cb350k4 Super Sport 1972 Usa Front Brake Panel .