Dorman - First Stop Brake Master Cylinder P/N:M630592
Dorman M630397 brake master cylinder for the 2004-2005 Kia Spectra turns pedal force into hydraulic pressure for the brakes. It is made entirely of new materials.
A soft or sinking brake pedal, brake fluid around the cylinder body or a brake warning light can mean the internal seals are wearing. These signs alone do not prove the master cylinder is the problem, since a leaking brake line is another common source of a low pedal. Brakes are a safety system, so have a shop look at them promptly.
This Dorman master cylinder is a direct-fit replacement for the 2004-2005 Kia Spectra. A 2004-2005 Kia Spectra takes one.
Fit and size
Build and materials
One brake master cylinder. Mounting hardware is not included, so plan on new fasteners.
Interchange: 100-3773 · 13-3288 · 11-3288 · 130.50023 · 355-21021
14057 · 585102F200 · NM55390 · MC391113 · F142415 · MC142415
This part cross-references / interchanges with the following part numbers:
Is this the right brake master cylinder for the 2004-2005 Kia Spectra?
Yes. Dorman M630397 is a direct-fit brake master cylinder for the 2004-2005 Kia Spectra, and the car takes one.
Is the reservoir included on this aluminum master cylinder, and what about mounting hardware?
The reservoir and sensor are included; mounting hardware is not. Dorman M630397 comes as the master cylinder alone, so plan on new fasteners.
What brake fluid are the rubber parts in this master cylinder made to resist?
All rubber components are made of EPDM compound, which resists glycol-based brake fluid.
What can a spongy brake pedal mean on a car with a master cylinder like this?
A soft or sinking pedal, or fluid at the cylinder body, can mean worn internal seals. A shop can test it, and brake problems need prompt attention.
How big is the bore on this aluminum master cylinder?
The bore diameter is 0.938 inch. Dorman M630397 has four outlets, with M16 x 1.5 and M10 x 1.0 thread sizes.
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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.