The DFC brake master cylinder for 2015–2021 Ford F-150 4WD is a replacement hydraulic component that restores brake-system pressure and pedal response for those 4WD F-150 models. It supplies the hydraulic force needed for braking and is intended for use when the original master cylinder fails, providing a direct replacement option to help technicians and owners complete required brake repairs on affected trucks.
DFC 15-21 Ford F-150 4WD Brake Master Cylinder