The DFC front right brake hose for 2017–2023 Audi S4 models is a direct-fit flexible hydraulic line intended to replace the vehicle's factory front right hose and maintain correct brake fluid flow and pedal feel. Specified for the front-right location on those S4 model years, it offers a straightforward OE-style replacement for routine brake system maintenance or repair.
DFC 17-23 Audi S4 Front-R Brake Hose