The DFC brake master cylinder for 1990–1991 Honda Civic is a replacement master cylinder intended to restore hydraulic braking function on those models. It provides the hydraulic control necessary to recover pedal feel and braking operation when the original unit is worn or leaking, serving as a practical OE-style replacement for routine brake repairs, maintenance, or restoration on the specified Civic applications.
DFC 90-91 Honda Civic Brake Master Cylinder