With a quantity of four pieces, the Washer is the most used part in the FRONT BRAKE HOSE (GS750EC diagram.
The most reasonably priced component used on the Gs750n 1978 (c) Usa (e03) Front Brake Hose (gs750ec is the Washer.
A sample from the products for the Front Brake Hose (gs750ec include: Washer, Washer, Hose,brake No.1, Washer.