Dorman - First Stop Brake Master Cylinder P/N:M631036
Dorman M630925 brake master cylinder for the 2013-2017 Honda Accord turns pedal force into hydraulic pressure for the brakes. Its design, function and performance are engineered to follow the original master cylinder on the vehicle it fits.
A pedal that feels soft or sinks, brake fluid around the cylinder, or a brake warning light can mean this brake master cylinder is worn, though a leaking brake hose or a sticking caliper can be behind them too, so trace the cause before you replace it.
This Dorman master cylinder fits the 2013-2017 Honda Accord.
Fit and size
Build and materials
One brake master cylinder with its reservoir and sensor. The 2013-2017 Honda Accord takes one. Mounting hardware is not included, so plan on new fasteners.
Interchange: 100-3957 · 13-4717 · 11-4581 · 130.40085 · 355-59061
46100T2FA01 · 46100T2FA02 · NM55658 · MC391484
This part cross-references / interchanges with the following part numbers:
What are the rubber parts in this Dorman brake master cylinder made of?
All rubber components are made of an EPDM compound, chosen for resistance to glycol-based brake fluid. The housing is cast iron.
Does the Dorman master cylinder come with mounting hardware?
No. The Dorman M630925 comes as the master cylinder with its reservoir and sensor; mounting hardware is not included.
Is this the right master cylinder for the 2013-2017 Honda Accord?
Yes. Dorman M630925 fits the 2013-2017 Honda Accord, which takes one master cylinder.
What outlet thread size does the M630925 have?
The rearward and secondary outlets are M12 X 1.0, and the primary outlet thread pitch is 1 mm. The bore diameter is 0.812 in.
How can I tell if a master cylinder is leaking?
With the engine off, look for wet brake fluid on the cylinder body or around the reservoir, or a fluid level that keeps dropping. Brake problems need prompt attention from a shop.
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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.