Dorman M630731 brake master cylinder for the 2014-2020 Infiniti QX70 and other vehicles turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder follows the original's design, function and performance, and its housing matches the original casting material.
- Part of Dorman's First Stop line
- Aluminum cylinder housing with a 1 inch bore diameter
- All rubber components are made of an EPDM compound for resistance to glycol-based brake fluid
- Made entirely of new materials
- Made to meet SAE International standards
Quick facts
- Part: Dorman M630731 brake master cylinder
- Fits: 2014-2020 Infiniti QX70 and other vehicles
- Material: Aluminum
- Condition: New
A soft or sinking brake pedal, brake fluid around the cylinder or a brake warning light can be signs of a worn master cylinder. These signs alone do not prove the master cylinder is the problem, since a leaking brake line or caliper can also leave the pedal soft.
Fits
It fits a wide range of Infiniti models, led by the 2014-2020 Infiniti QX70, the 2013 Infiniti FX37 and the 2009-2013 Infiniti FX50. If your Infiniti is not one of these, find your year and model in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 1 inch
- Number of outlets: 2
- Rearward outlet size: M12 x 1.0
- Secondary outlet thread diameter: M12 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Condition: New
- Country of origin: Taiwan
In the box
One master cylinder with its reservoir and sensor. Mounting hardware is not included, and the old bolts and fasteners may not be reusable, so plan on new hardware. This listing is a single master cylinder, which is all the vehicle needs.
Interchange: 100-3708 · 13-3225 · 11-3225 · 130.42812 · 355-68024
NM55457 · D6010JK01A · MC391268 · F143593 · MC143593 · R135075
This part cross-references / interchanges with the following part numbers:
100-3708, 13-3225, 11-3225, 130.42812, 355-68024, NM55457, D6010JK01A, MC391268, F143593, MC143593, R135075
Frequently Asked Questions
Does the Dorman M630731 fit a 2014-2020 Infiniti QX70?
Yes. Dorman M630731 is a brake master cylinder for the 2014-2020 Infiniti QX70, which takes one. Other Infiniti years and models are in the Vehicles it fits section.
Does this Dorman master cylinder come with the reservoir?
Yes. Dorman M630731 includes the reservoir and the sensor with the master cylinder. Mounting hardware is not included.
What bore size does this brake master cylinder have?
The bore diameter is 1 inch. The rearward outlet and the secondary outlet thread are both M12 x 1.0.
Can the rubber parts in this master cylinder handle glycol-based brake fluid?
Yes. All the rubber components are made of an EPDM compound for resistance to glycol-based brake fluid.
Does Dorman M630731 replace 130.42812?
Yes. 130.42812 is one of the other-brand numbers this master cylinder replaces, and the Interchange line gives the rest.
