Those hard lines aren't the only parts to deteriorate, rubber breaks down over time too. So while you've replaced the rusting lines, the hoses they attach to could also stand to be replaced.
Save $4.06
Fine Lines
HSP4031OM- 66 Chevy Bel Air, Biscayne, Impala; Rear Brake Hose; Rubber
Sale price$36.57
Regular price$40.63