Andrew Markel is the editor of Brake & Front End magazine. He has been with Babcox Media for 15 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers. He can be reached at [email protected] Brake hoses are the most government-regulated components on a vehicle. Anyone making brake assemblies must be registered with the Department of Transportation (DOT). All aftermarket hose, fittings and complete hoses must conform to FMVSS 106 and SAE J1401. These tests are demanding and often exceed what a vehicle will see in the real world. The DOT standard in a nutshell says brake hoses must be flexible in a wide range of temperatures while having a predictable expansion rate so the pedal feel and ABS response is the same in winter and summer. It also specifies that hoses must be able to bend and twist at certain angles without collapsing, kinking or bursting. FMVSS 106 and SAE J1401 do not specify construction or materials. These documents outline a test procedure that completed hoses must pass. These tests and standards include:• Markings: Each hydraulic brake hose, except the original hoses, have at leas...