Replace the old brake lines in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with Brake Lines & Hoses. Brake hoses, and brake lines can corrode, and degrade as they age which can result in leaks or brake failure. Find hydraulic brake hoses, steel brake line kits, and the brake hardware your vehicle needs. With products from manufacturers including Dorman, Russel Performance, StopTech, and more, you are sure to find the parts you need.