The DFC brake hose for 2021–2023 Ford F-150 4WD rear left and rear left lower positions is a replacement hydraulic line that carries brake fluid from the chassis hard line to the rear-left wheel brake assembly, restoring braking at that wheel. Specified for 4WD models in the listed years, this hose targets the rear-left location for repair of worn or damaged lines on affected F-150 trucks.
DFC 21-23 Ford F-150 4WD Rear-L lo/Rear-L Brake Hose