Dorman - First Stop Brake Master Cylinder P/N:M39403
Dorman M630728 brake master cylinder for the 2007-2013 Suzuki SX4 and other vehicles turns pedal force into hydraulic pressure for the brakes. The design, function and performance of the cylinder, and the casting material of its housing, are engineered to match the original master cylinder.
A soft or sinking brake pedal, a falling fluid level or a brake warning light can mean the master cylinder is wearing out. These signs alone do not prove the master cylinder is at fault, since a leaking brake line can cause them too. If a failed master cylinder is the cause, this unit replaces it.
This listing is one master cylinder. The 2007-2013 Suzuki SX4 and the 2012 Suzuki SX4 Crossover each take one.
Fit and size
Build and materials
One brake master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new hardware; the old pieces may not be reusable.
Interchange: 100-2877 · 13-3803 · 11-3803 · 130.48031 · 355-01019
NM55454 · MC391266 · 5110080J60 · R135592
This part cross-references / interchanges with the following part numbers:
Is this a master cylinder for the 2007-2013 Suzuki SX4?
Yes. Dorman M630728 fits the 2007-2013 Suzuki SX4 and the 2012 Suzuki SX4 Crossover, and each of them takes one.
Is this Dorman brake master cylinder made from new parts?
Yes. It is made entirely of new materials, and its housing is aluminum.
Does this Dorman master cylinder include the reservoir?
Yes. Dorman M630728 comes with the reservoir and the sensor. Mounting hardware is not included.
What brake fluid are the rubber parts in this master cylinder resistant to?
All rubber components are made of an EPDM compound for resistance to glycol-based brake fluid.
What size are the outlet threads on this master cylinder?
The outlet threads are M12 X 1.0 with a 1 mm thread pitch, and the bore diameter is 0.875 inch.
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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.