Keep hydraulic pressure flowing to the front brakes with the Dorman - First Stop Brake Hydraulic Hose (H21784). This flexible EPDM rubber hose carries pressurized brake fluid from the steel brake line out to the wheel while flexing with steering and suspension movement, and it fits the front left or front right position on classic Ford and Mercury applications including the 1957 Mercury Turnpike Cruiser, 1957-1958 Mercury Monterey, and 1966 Ford Fairlane and Falcon (see the Buyer's Guide tab for the full list).
Dorman precision-engineered this hose to the original's measurements, fit and function for the listed vehicles and positions.
Signs this hose may need replacing include cracking, bulging, or fluid weeping at the hose, or a soft, spongy pedal; if a deteriorated front brake hose is the cause, this replaces it. Sold individually as one brake hose; mounting hardware, bracket, and gasket or seal are not included. Country of origin: China.
Interchange: 87-34002 · 8734002 · B916017 · 612095 · HB-81002 · HB81002 · 150.61002 · BH188291 · C20Z2078A · LD2078A · 9750943 · BH21784 · 2204534 · F21784. Manufacturer part number H21784.
This part cross-references / interchanges with the following part numbers:
What does this brake hydraulic hose do?
It carries pressurized brake fluid from the rigid brake line to the wheel while flexing with steering and suspension movement, so the caliper or wheel cylinder can apply the brakes.
Which vehicles does H21784 fit?
It fits the front left or right position on 1957-1958 Mercury Colony Park, Commuter, Montclair, Monterey and Voyager, 1958 Medalist and Park Lane, 1957 Turnpike Cruiser, and 1966 Ford Fairlane and Falcon.
What is the hose made of?
The hose is EPDM rubber with a rubber outer sleeve, and the treated-steel end fittings are specially coated to resist corrosion.
What are the fitting types and sizes?
End 1 is a male fitting and End 2 is a female fitting, both 3/8 in-24, with an overall length of 13.75 inches.
Does it include mounting hardware or a bracket?
No. It ships as one brake hose only — no mounting hardware, bracket, or gasket/seal. Consult the vehicle service information for the correct fasteners and whether they may be reused.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.