Dorman M631044 brake master cylinder for the 2017-2018 Ford Focus and other vehicles turns pedal force into hydraulic pressure for the brakes. It sends fluid out through two outlets to the brake lines.
- Part of the Dorman First Stop line
- Aluminum cylinder housing with a 1 in bore diameter
- All rubber components are EPDM compound, resistant to glycol-based brake fluid
- Made entirely of new materials
- Made to meet SAE International standards
Quick facts
- Part: Dorman M631044 brake master cylinder
- Fits: 2017-2018 Ford Focus and other vehicles
- Material: Aluminum
- Condition: New
A soft or sinking brake pedal, brake fluid on the cylinder body or a falling fluid level can mean the master cylinder is wearing out. With the engine off, look over the cylinder, the brake lines and the hoses for wet spots first, because a leak elsewhere in the system produces similar signs; a shop can pressure-test the rest.
Fits
This master cylinder fits the 2017-2018 Ford Focus and the 2014-2022 Ford Transit Connect. Each takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 1 in
- Number of outlets: 2
- Rearward outlet size: M14x1.0
- Secondary outlet thread diameter: M14x1.0
- Primary outlet thread pitch: 1 mm
- Mounting holes: 2
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One master cylinder. The reservoir, cap, push rod, brake booster, sensor, bleeder hoses, mounting bracket and mounting hardware are not included, so plan on new mounting hardware.
Interchange: AV6Z2140A · DV6Z2140F · DV6Z2140G · DV6Z2140P
This part cross-references / interchanges with the following part numbers:
AV6Z2140A, DV6Z2140F, DV6Z2140G, DV6Z2140P
Frequently Asked Questions
Is M631044 the right Ford Focus master cylinder for the 2017-2018 model years?
Yes. Dorman M631044 fits the 2017-2018 Ford Focus, and the 2014-2022 Ford Transit Connect also takes it, one per vehicle.
Does this Dorman brake master cylinder come with the reservoir and cap?
No. Dorman M631044 is the master cylinder only. The reservoir, cap, push rod, brake booster, sensor, bleeder hoses, bracket and mounting hardware are not included.
What size are the outlets and bore on this master cylinder?
The rearward and secondary outlets are M14x1.0, the primary outlet thread pitch is 1 mm, and the bore diameter is 1 in.
My brake pedal sinks slowly; could a worn master cylinder be the reason?
A worn master cylinder can be one cause, for example if it leaks internally or externally. Don't keep driving on a sinking pedal; have the brakes checked promptly.
Which OE numbers does this Dorman master cylinder replace?
Dorman M631044 replaces AV6Z2140A, DV6Z2140F, DV6Z2140G and DV6Z2140P.
