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Dorman - First Stop Brake Master Cylinder P/N:M630102
$112.99
Convert brake-pedal force into the hydraulic pressure that operates both brake circuits with the Dorman First Stop Brake Master Cylinder M630102. It installs as a direct-fit replacement for the 2000-2002 Nissan Frontier [All], and is built entirely from new materials — not remanufactured — to meet rigorous SAE International standards.
- Aluminum housing: the cylinder body is constructed to match the casting material of the original part for similar performance.
- EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new build: made completely from new materials for consistent quality and safety.
- Ready to fit: includes the reservoir and features a 1 in bore with two outlets (secondary outlet thread M10 x 1.0). Mounting hardware and a sensor are not included.
If a leaking, sinking-pedal, or internally-bypassing master cylinder is the cause of your braking trouble, this unit replaces it. Signs the original may need replacing include a pedal that slowly sinks under steady foot pressure, external fluid leakage at the cylinder, or a loss of pedal firmness. Country of origin: Taiwan.
Interchange: 100-1421 · 1001421 · M-51323 · M51323 · 072-9506 · 0729506 · 13-3011 · 133011 · 11-3011 · 113011 · 130.42322 · 131.42322 · MC511500 · 460107B7 · M55173 · NM55173 · 460107B700 · MC390838 · F134496 · MC134496 · Manufacturer part number M630102
This part cross-references / interchanges with the following part numbers:
100-1421, M-51323, 072-9506, 13-3011, 11-3011, 130.42322, 131.42322, MC511500, 460107B7, M55173, NM55173, 460107B700, MC390838, F134496, MC134496
Frequently Asked Questions
Does this master cylinder fit my vehicle?
It's a direct-fit replacement for the 2000-2002 Nissan Frontier [All]. Check the Buyer's Guide tab to confirm the application for your vehicle.
Does it include a reservoir?
Yes, the reservoir is included. Mounting hardware and a sensor are not included.
What is the bore size and outlet thread?
It has a 1 in bore and two outlets; the secondary outlet thread is M10 x 1.0.
Is this a remanufactured unit?
No. It's made entirely from new materials — 100% new, not remanufactured — and built to meet SAE International standards.
What are signs my master cylinder may need replacing?
A brake pedal that slowly sinks under steady pressure, external fluid leakage at the cylinder, or a loss of pedal firmness. Diagnose the cause before replacing.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M630102
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