Dorman - First Stop Brake Master Cylinder P/N:M630759
Send hydraulic pressure to the brakes every time you press the pedal with the Dorman brake master cylinder M39628 from the First Stop line. It is a direct-fit unit for the 1987-1989 Ford Aerostar (engine: All). It is precision-engineered to mirror the original master cylinder's design, function and performance, and built from new, high-quality materials for a safe, durable replacement.
The master cylinder converts pedal force into hydraulic pressure that feeds the brake lines. If a leaking or internally worn master cylinder is behind a soft or sinking pedal, this unit replaces it.
M39628 has an aluminum body, a 0.938 in bore, 2 outlets and a 7/16-24 rearward outlet size. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.
Interchange: 783-42005 · 83-42005 · 100-2447 · M-85005 · 13-2376 · 10-2376 · 130.65005 · 131.65005 · 355-54131
18M346 · M900552 · 12385 · MC114075 · E79Z2140A · 114075 · M2180 · NM2180 · MC39628 · F114075 · F37781 · 78342005 · 8342005 · 1002447 · M85005 · 132376 · 102376 · 13065005 · 13165005 · 35554131
This part cross-references / interchanges with the following part numbers:
Is a Dorman master cylinder bleeder kit included?
The package contents list the master cylinder, with the reservoir and sensor included. A bleeder kit is not listed, and mounting hardware is not included.
Which vehicles does M39628 fit?
M39628 is a direct-fit unit for the 1987-1989 Ford Aerostar (engine: All).
What are the key specifications?
It has an aluminum body, a 0.938 in bore, 2 outlets and a 7/16-24 rearward outlet size. The reservoir and sensor are included.
What signs may mean the master cylinder needs replacing?
A soft or sinking pedal, fluid leaking at the master cylinder, or a dropping reservoir level are signs it may need replacing. Other brake faults can cause these too, so diagnose the system first.
Which brake fluid are the rubber components designed for?
All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid. Use the fluid type specified in your vehicle's service information.
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.