Dorman - First Stop Brake Master Cylinder P/N:M630586
Dorman M390039 brake master cylinder for the 1989-1995 Mazda MPV turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is made to the design, function and performance of the original on the Mazda.
A soft or sinking brake pedal, fluid around the cylinder or a brake warning light can mean the master cylinder is wearing out. Before you replace it, rule out a leak elsewhere in the brake system, because lines, hoses and calipers can produce similar signs.
This master cylinder fits the 1989-1995 Mazda MPV, which takes one.
Fit and size
Build and materials
One master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new fasteners.
Interchange: 783-14301 · 83-14301 · 100-1761 · M-53301 · 072-8537 · 13-2461 · 11-2461 · 130.45301 · 131.45301 · 355-80049
18M575 · M900783 · 12375 · 12924 · MC250090 · M52461 · NM52461 · LA0143400A · LA0143400B · LA0143400D · MC390039 · F128163 · MC128163
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is this a brake master cylinder for the 1989-1995 Mazda MPV?
Yes. Dorman M390039 fits the 1989-1995 Mazda MPV, and each vehicle takes one.
Does this Dorman master cylinder come with the reservoir and sensor?
Yes, Dorman M390039 includes the reservoir and the sensor. Mounting hardware is not included.
Is the housing of this master cylinder cast iron?
Yes, the housing is cast iron. All rubber components are EPDM compound, which resists glycol-based brake fluid.
What brake pedal signs can point to a failing master cylinder?
A soft or sinking pedal, fluid around the cylinder or a brake warning light can be signs. Because brakes are involved, have it inspected promptly rather than driving on it.
Does Dorman M390039 interchange with 18M575?
Yes, 18M575 is one of the numbers this Dorman M390039 master cylinder replaces, along with 783-14301 and 83-14301.
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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.