Dorman M631027 brake master cylinder for the 2010-2016 Cadillac SRX turns pedal force into hydraulic pressure for the brakes.
- Dorman First Stop line
- Cylinder housing is aluminum
- All rubber components are EPDM compound, which resists glycol-based brake fluid
- Made entirely of new materials
- Made to meet SAE International standards
- Single reservoir with two outlets
Quick facts
- Part: Dorman M631027 brake master cylinder
- Fits: 2010-2016 Cadillac SRX
- Material: Aluminum
- Condition: New
A soft or sinking brake pedal, fluid seeping around the cylinder body or a brake warning light can mean the master cylinder is worn, though a leaking brake line or a worn caliper can be behind them too, so find out which one it is before you replace anything.
Fits
This new master cylinder is a direct-fit replacement for the 2010-2016 Cadillac SRX, which takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 1.063 in
- Number of outlets: 2
- Rearward outlet size: M12 X 1.0
- Secondary outlet thread diameter: M12 X 1.0
- Mounting holes: 2
Build and materials
- Material: Aluminum
- Reservoir type: Single
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One master cylinder with its reservoir, reservoir cap and sensor. The push rod, bleeder hoses, mounting hardware, mounting bracket and brake booster are not included, and the old mounting hardware may not be reusable, so plan on new pieces.
Interchange: 100-4045 · 10-4342 · 130.62171
20819270 · NM4303 · MC146051
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
100-4045, 10-4342, 130.62171, 20819270, NM4303, MC146051
Frequently Asked Questions
Is the Dorman M631027 master cylinder right for the 2010-2016 Cadillac SRX?
Yes. Dorman M631027 is listed for the 2010-2016 Cadillac SRX, and the SRX takes one.
Does this Dorman master cylinder come with the reservoir and cap?
Yes. Dorman M631027 includes the reservoir, reservoir cap and sensor. The push rod, bleeder hoses, mounting hardware, mounting bracket and brake booster are not included.
What are the outlet thread sizes on this aluminum master cylinder?
Both outlets are M12 X 1.0, and the bore diameter is 1.063 inch. The housing is aluminum with two mounting holes.
What are the signs a brake master cylinder like the Dorman M631027 is wearing out?
Brake fluid residue on the cylinder body or a pedal that sinks toward the floor can be signs of wear. A shop can test the master cylinder to confirm.
Does Dorman M631027 cross-reference to 20819270?
Yes. 20819270 is on the interchange list for Dorman M631027, along with 100-4045, 10-4342, 130.62171, NM4303 and MC146051.
