Dorman - First Stop Brake Master Cylinder P/N:M630561
Dorman M390395 brake master cylinder for the 1998 Ford Windstar turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder has two outlets.
A soft or sinking brake pedal, fluid at the cylinder body or a brake warning light can mean the master cylinder is worn. Before replacing it, look over the cylinder body and the brake lines with the engine off for wet spots, since a leak elsewhere in the system can also give a soft pedal. If the master cylinder is the cause, this unit replaces it.
It is a direct-fit replacement for the 1998 Ford Windstar.
Fit and size
Build and materials
One brake master cylinder with its reservoir and sensor; the 1998 Ford Windstar takes one. Mounting hardware is not included, so plan on new mounting hardware rather than reusing the old pieces.
Interchange: 83-42056 · 100-2509 · M-85056 · 13-2876 · 10-2876 · 130.65056 · 355-54175
18M815 · M901050 · 13332 · MC252270 · F78Z2140BA · F88Z2140BA · M2876 · NM2876 · MC390395 · F134455 · F134463 · MC134463
This part cross-references / interchanges with the following part numbers:
Is the Dorman M390395 the right 1998 Ford Windstar brake master cylinder?
Yes. Dorman M390395 is a direct-fit replacement for the 1998 Ford Windstar, and that vehicle takes one.
Does this brake master cylinder come with the reservoir and sensor?
Yes. Dorman M390395 includes the reservoir and the sensor. Mounting hardware is not included.
Are the rubber parts in this Dorman master cylinder resistant to glycol-based brake fluid?
Yes. All rubber components are made of an EPDM compound that resists glycol-based brake fluid.
What size are the outlet threads on this master cylinder?
The rearward and secondary outlets are M10 x 1.0, and the primary outlet thread pitch is 1 mm. The cylinder has two outlets and a 1 in bore.
Can a soft brake pedal be a sign of a worn master cylinder?
Yes, a soft or sinking pedal can be one sign, along with fluid leaking at the cylinder body. Have the brakes checked promptly; a shop can test the master cylinder.
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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.