Dorman - First Stop Brake Master Cylinder M630307
Dorman - First Stop Brake Master Cylinder M630307 - view 2
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Dorman - First Stop Brake Master Cylinder M630307
Dorman - First Stop Brake Master Cylinder M630307 - view 2
Dorman - First Stop Brake Master Cylinder M630307 - view 3
Dorman - First Stop Brake Master Cylinder M630307 - view 4

Dorman - First Stop Brake Master Cylinder P/N:M630307

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$72.99
MPN: M630307
Item Package Quantity: 1
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Dorman - First Stop Brake Master Cylinder P/N:M630307
Dorman - First Stop Brake Master Cylinder P/N:M630307
$72.99

Convert brake-pedal force into the hydraulic pressure that feeds each brake circuit with the Dorman - First Stop Brake Master Cylinder M630307. It drops in as a direct-fit replacement for the 2004-2007 Ford Taurus [All] and the 2004-2005 Mercury Sable [All], and Dorman precision-engineers it to match the design, function, and performance of the original master cylinder on the listed applications.

  • Aluminum housing: constructed to match the casting material of the original part for similar performance.
  • EPDM rubber components: made of a high-quality EPDM compound for resistance to glycol-based brake fluid.
  • 100% new: built entirely of new materials, not remanufactured.
  • Strict specifications: made to meet rigorous SAE International standards.

This unit has two outlets with M10 x 1.0 thread sizing and a 1-inch bore diameter, and it ships with the reservoir and sensor included. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Common signs a master cylinder may need replacing include a sinking or spongy brake pedal, a low pedal, or brake-fluid leakage at the unit; diagnose the cause before replacing. Country of origin: China.

Interchange: 100-3058 · 1003058 · 13909 · 13-3048 · 133048 · 10-3048 · 103048 · 130.61091 · 131.61091 · MC512640 · 355-54117 · 35554117 · 4F1Z2140AA · M4070 · NM4070 · BRMC-21 · BRMC21 · MC390812 · F140899 · MC140899. Manufacturer part number M630307.

This part cross-references / interchanges with the following part numbers:

100-3058, 13909, 13-3048, 10-3048, 130.61091, 131.61091, MC512640, 355-54117, 4F1Z2140AA, M4070, NM4070, BRMC-21, MC390812, F140899, MC140899

Frequently Asked Questions

What does the M630307 master cylinder do?

It converts the force from your brake pedal into hydraulic pressure and distributes it through two outlets to the brake circuits. If a failed master cylinder is the cause of your pedal issue, this replaces it.

Will this fit my vehicle?

It's a direct-fit replacement for the 2004-2007 Ford Taurus and the 2004-2005 Mercury Sable. Check the Buyer's Guide tab to confirm it matches your vehicle.

Does it include the reservoir and sensor?

Yes. This master cylinder ships with the reservoir and the sensor included; the package contents are the master cylinder assembly.

Are mounting fasteners included?

No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.

What are the outlet and bore specs?

It has a 1-inch bore diameter and two outlets sized M10 x 1.0. The housing is aluminum and made to meet SAE International standards.

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