A sample from the products for the Rear Master Cylinder (sv1000k3/sk4) include: Hose,rr Reservoir Tank, Washer, Hose,rr Brake, Tank Assy,rr Reservoir.
Check out any of the twenty-nine Rear Master Cylinder (sv1000k3/sk4) components enlisted.
On this parts fiche the Washer(10x15x1.5) is the most specified component.