The DFC brake master cylinder for 2002–2009 Audi S6 is the hydraulic unit that converts driver pedal input into pressurized fluid to engage the braking system. Provided as a replacement component, it helps remedy leaks, degraded seals, or internal wear to restore proper pedal feel and hydraulic control. This part is specified for Audi S6 models from 2002 through 2009.
DFC 02-09 Audi S6 Brake Master Cylinder