Dorman M630814 brake master cylinder for the 2011-2012 Mazda 2 turns pedal force into hydraulic pressure for the brakes. The Dorman brake master cylinder sends fluid out through two outlets when you press the pedal.
- Cylinder housing made of aluminum
- EPDM rubber components that resist glycol-based brake fluid
- Made entirely of new materials
- Built to meet SAE International standards
Quick facts
- Part: Dorman M630814 brake master cylinder
- Fits: 2011-2012 Mazda 2
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks slowly, or fluid showing around the cylinder, can mean the master cylinder is wearing out. With the engine off, look at the fluid level in the reservoir and for wet spots around the cylinder and brake lines first, because a leak elsewhere or air in the system can give a similar pedal. Find the cause before you replace it, and have brake problems looked at promptly.
Fits
This is a master cylinder for the 2011-2012 Mazda 2, a direct-fit replacement for that car.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 0.875 in
- Number of outlets: 2
- Rearward outlet: M10 x 1.0
- Secondary outlet thread: M10 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Condition: New
- Country of origin: Taiwan
In the box
One brake master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new fasteners rather than reusing the old ones. This listing is one master cylinder, and the 2011-2012 Mazda 2 takes one.
Interchange: 100-4375 · 13-4023M · 11-4023 · 130.44507 · 130.44511 · 355-91003
MC391297 · 4720152420 · R135758 · R135966
This part cross-references / interchanges with the following part numbers:
100-4375, 13-4023M, 11-4023, 130.44507, 130.44511, 355-91003, MC391297, 4720152420, R135758, R135966
Frequently Asked Questions
Is this master cylinder right for the 2011-2012 Mazda 2?
Yes. Dorman M630814 is a direct-fit replacement for the 2011-2012 Mazda 2, and that car takes one.
Does this Dorman master cylinder come with the reservoir and sensor?
Yes. Dorman M630814 includes its reservoir and sensor. Mounting hardware is not included.
What is the housing made of, and what is the bore size?
The housing is aluminum, with a 0.875 inch bore diameter and two outlets. All rubber components are EPDM, which resists glycol-based brake fluid.
What can a soft or sinking brake pedal mean with this master cylinder?
A soft or sinking pedal, or fluid showing around the cylinder, can mean the master cylinder is wearing out. Have the brakes inspected promptly instead of driving on them.
What thread size are the outlets on the Dorman M630814?
The rearward outlet is M10 x 1.0 and the secondary outlet thread is M10 x 1.0. The primary outlet thread pitch is 1 mm.
