Dorman M630828 brake master cylinder for the 2013-2018 Rolls-Royce Phantom and other vehicles turns pedal force into hydraulic pressure for the brakes.
- Dorman First Stop line, made entirely of new materials
- Cast iron housing with a 0.9375 in bore diameter
- Rubber components made of EPDM compound for resistance to glycol-based brake fluid
- Made to meet SAE International standards
- Three outlets, two of them rearward outlets threaded M12 x 1.0
Quick facts
- Part: Dorman M630828 brake master cylinder
- Fits: 2013-2018 Rolls-Royce Phantom and other vehicles
- Material: Cast iron
- Condition: New
A soft or sinking brake pedal, fluid around the cylinder or a brake warning light can mean the master cylinder is failing. Worn calipers, lines or low fluid can cause similar signs, so with the engine off, look for fluid on the cylinder body and check the reservoir level before you replace it. A shop can pressure-test the system.
Fits
The 2013-2018 Rolls-Royce Phantom, the 2006-2008 BMW 750i and the 2006-2008 BMW 750Li fit this Dorman brake master cylinder, along with other vehicles. Each vehicle takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 0.9375 in
- Number of outlets: 3
- Rearward outlet size: (2) M12 x 1.0
- Secondary outlet thread diameter: M12 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Cast iron
- Rubber components: EPDM compound
- Standards: SAE International
- Condition: New
- Country of origin: Taiwan
In the box
One brake master cylinder. Mounting hardware, a reservoir and a sensor are not included, so plan on new mounting hardware because the old fasteners may not be reusable.
Interchange: 100-3883 · 13-3168 · 11-3168 · 130.42823
34316758968 · 34336779737 · 34336785926 · NM55546 · D60103BA6A · MC391475 · MC391523 · F142341 · MC142341
This part cross-references / interchanges with the following part numbers:
100-3883, 34316758968, 34336779737, 34336785926, 13-3168, 11-3168, 130.42823, NM55546, D60103BA6A, MC391475, MC391523, F142341, MC142341
Frequently Asked Questions
Does the Dorman M630828 fit the 2006-2008 BMW 750i?
Yes, Dorman M630828 fits the 2006-2008 BMW 750i, as well as the 2013-2018 Rolls-Royce Phantom and the 2006-2008 BMW 750Li. For another car, look up its year and model in the "Vehicles it fits" section.
Does this Dorman master cylinder come with a reservoir or mounting hardware?
No. The box holds one master cylinder; the reservoir, mounting hardware and a sensor are not included.
What material is the Dorman M630828 housing made of?
The Dorman M630828 housing is cast iron, and its rubber components are EPDM compound for resistance to glycol-based brake fluid.
Can I keep driving with a leaking brake master cylinder?
No. A leaking or failing master cylinder affects the brakes, so have it checked or replaced promptly rather than driving on it.
Is 34336779737 an interchange number for the Dorman M630828?
Yes. 34336779737 is one of the numbers this master cylinder replaces, so you can match the Dorman M630828 to it by that number.
