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Dorman - First Stop Brake Master Cylinder P/N:M630744
$223.99
Turn brake-pedal effort into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder M630744. It drops in as a direct-fit replacement for the 2011-2012 Nissan Sentra (All engines), and because Dorman precision-engineers it to the design, function, and performance of the original unit, it installs like the factory part on the listed application.
- Aluminum housing: the cylinder housing is built to match the casting material of the original part for similar performance.
- Fluid-resistant seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new: made entirely of new materials, not remanufactured.
- Strict specifications: made to meet rigorous SAE International standards.
This unit includes the reservoir and the fluid-level sensor, and has two outlets with an M12 x 1.0 thread (1 mm pitch) and a 0.938 in bore diameter. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the master cylinder may need replacing include a spongy or slowly sinking pedal or internal fluid bypass; if a failed master cylinder is the cause, this replaces it. Country of origin: China.
Interchange: 100-3711 · 1003711 · 13-4364 · 134364 · 11-4364 · 114364 · 11-4644 · 114644 · 130.42223 · 355-67029 · 35567029 · NM55512 · 46010ZJ91A · MC391402 · R504364
Manufacturer part number M630744.
This part cross-references / interchanges with the following part numbers:
100-3711, 13-4364, 11-4364, 11-4644, 130.42223, 355-67029, NM55512, 46010ZJ91A, MC391402, R504364
Frequently Asked Questions
What does this master cylinder do?
It converts the force you apply to the brake pedal into hydraulic pressure that operates the vehicle's braking system.
Will this fit my vehicle?
It is a direct-fit replacement for the 2011-2012 Nissan Sentra (All engines). Check the Buyer's Guide tab to confirm it matches your vehicle.
Does it come with a reservoir and sensor?
Yes. This unit includes the reservoir and the fluid-level sensor. Mounting hardware is not included, so consult the service information for the correct fasteners.
What are the outlet and bore specs?
It has two outlets with an M12 x 1.0 thread and a 1 mm pitch, and a bore diameter of 0.938 in.
What are signs it may need replacing?
A spongy pedal, a pedal that slowly sinks toward the floor, or internal fluid bypass. Diagnose the cause first; if the master cylinder is at fault, this replaces it.
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Dorman - First Stop Brake Master Cylinder P/N:M630744
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