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Dorman - First Stop Brake Master Cylinder P/N:M630461
$131.99
Turn brake-pedal force into the hydraulic pressure that operates your brake circuits with the Dorman - First Stop Brake Master Cylinder M630461. It installs as a direct-fit replacement for the 2003-2004 Nissan Frontier and 2003-2004 Nissan Xterra (All engines), and Dorman builds it to replicate the original master cylinder's design, function, and performance on those applications.
The aluminum housing is built to match the original part's casting material for similar performance, and its sealing components use a high-quality EPDM compound that resists glycol-based brake fluid. It has a 1-inch bore and two outlets with M10 x 1.0 outlet threads.
- 100% new: made entirely of new materials, not remanufactured, and built to meet rigorous SAE International standards.
- Aluminum housing: constructed to match the original part's casting material for similar performance.
- EPDM rubber components: resist glycol-based brake fluid for a durable seal.
- Includes reservoir and sensor: ships with the reservoir and sensor installed; mounting hardware is not included.
If a failed master cylinder is the cause of a slowly sinking or spongy brake pedal or internal fluid loss, this unit replaces it. Country of origin: China.
Interchange: 100-4197 · 1004197 · 11-3134 · 113134 · 130.42325 · 355-67048 · 35567048 · NM55320 · 460101Z600 · MC390840 · MC390875 · F144029 · MC144029
Manufacturer part number M630461
This part cross-references / interchanges with the following part numbers:
100-4197, 11-3134, 130.42325, 355-67048, NM55320, 460101Z600, MC390840, MC390875, F144029, MC144029
Frequently Asked Questions
What vehicles does this master cylinder fit?
It's a direct-fit replacement for the 2003-2004 Nissan Frontier and 2003-2004 Nissan Xterra (All engines). See the Buyer's Guide tab to confirm fitment for your vehicle.
Does it include the reservoir and sensor?
Yes. Per the catalog, this master cylinder includes the reservoir and the sensor. The package contents are the master cylinder assembly.
Is mounting hardware included?
No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether any originals may be reused.
What does a brake master cylinder do?
It converts the force from the brake pedal into hydraulic pressure and sends brake fluid through its two outlets to the brake circuits.
What are signs this part may need replacing?
A brake pedal that slowly sinks or feels spongy, or internal brake-fluid loss, can be signs of a failing master cylinder. Diagnose the cause before replacing.
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Dorman - First Stop Brake Master Cylinder P/N:M630461
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