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Dorman - First Stop Brake Master Cylinder P/N:M630363
$151.99
Generate the hydraulic pressure that operates the braking system with the Dorman First Stop Brake Master Cylinder M630363. It converts brake-pedal force into hydraulic pressure delivered to the brake circuits, and drops in as a direct-fit replacement for the 2003-2004 Nissan Frontier [All] and 2003-2004 Nissan Xterra [All]. Dorman precision-engineers this unit to match the design, function, and performance of the original master cylinder, using all-new materials.
- 100% new: built entirely from new materials, not remanufactured.
- Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- Durable EPDM seals: rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet rigorous SAE International standards.
This master cylinder has a 1-inch bore and three outlets, with a 1 mm primary outlet thread pitch and an M10 x 1.0 secondary outlet thread diameter. It includes the reservoir and sensor; mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. If a worn or leaking master cylinder is the cause of a sinking or spongy brake pedal, this replaces it. Country of origin: China.
Interchange: 100-1426 · 1001426 · 072-9631 · 0729631 · 13952 · 13-3143 · 133143 · 11-3143 · 113143 · 11-3404 · 113404 · 130.42327 · 13042327 · 355-67050 · 35567050 · M55322 · NM55322 · 460102Z600 · MC390867 · F141136 · MC141136. Manufacturer part number M630363.
This part cross-references / interchanges with the following part numbers:
100-1426, 072-9631, 13952, 13-3143, 11-3143, 11-3404, 130.42327, 355-67050, M55322, NM55322, 460102Z600, MC390867, F141136, MC141136
Frequently Asked Questions
What vehicles does this master cylinder fit?
It's a direct-fit replacement for the 2003-2004 Nissan Frontier [All] and 2003-2004 Nissan Xterra [All]. Check the Buyer's Guide tab to confirm fitment for your vehicle.
Does it include a reservoir and sensor?
Yes. Both the reservoir and the sensor are included. Mounting hardware is not included.
What is the bore size and outlet configuration?
It has a 1-inch bore and three outlets, with a 1 mm primary outlet thread pitch and an M10 x 1.0 secondary outlet thread diameter.
Is this a remanufactured unit?
No. It's 100% new, made entirely from new materials, and built to meet rigorous SAE International standards.
What are signs my master cylinder may need replacing?
Signs may include a brake pedal that slowly sinks to the floor, a spongy pedal, or brake fluid leaks. Diagnose the cause before replacing.
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Dorman - First Stop Brake Master Cylinder P/N:M630363
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