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Dorman - First Stop Brake Master Cylinder P/N:M630323
$149.99
Convert brake-pedal force into the hydraulic pressure your braking system needs with the Dorman - First Stop Brake Master Cylinder M630323. It's a direct-fit replacement for the 1999-2000 Honda Civic [All] and 2003-2005 Hyundai Elantra [All], engineered to reproduce the original master cylinder's design, function, and performance on the listed applications.
- 100% new: built entirely from new materials — not remanufactured — for consistent quality and safety.
- Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- Durable EPDM seals: all 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; features a 0.875 in bore, four outlets, and M16 x 1.0 / M10 x 1.0 outlet threads.
Includes the reservoir and sensor. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. If a failed master cylinder is the cause of a sinking or spongy pedal, this replaces it; diagnose the cause before ordering. Country of origin: China.
Interchange: 100-2043 · 1002043 · 072-9715 · 0729715 · 13-3240 · 133240 · 11-2992 · 112992 · 11-3240 · 113240 · 130.51032 · 355-03031 · 35503031 · 585102D200 · M55152 · NM55152 · NM55392 · MC390917 · F140702 · F142413 · MC140702 · MC142413 · Manufacturer part number M630323
This part cross-references / interchanges with the following part numbers:
100-2043, 072-9715, 13-3240, 11-2992, 11-3240, 130.51032, 355-03031, 585102D200, M55152, NM55152, NM55392, MC390917, F140702, F142413, MC140702, MC142413
Frequently Asked Questions
Will this master cylinder fit my vehicle?
It's a direct-fit replacement for the 1999-2000 Honda Civic [All] and 2003-2005 Hyundai Elantra [All]. Check the Buyer's Guide tab to confirm the match for your vehicle.
Is this part new or remanufactured?
It's 100% new, made entirely from new materials rather than remanufactured, and built to meet rigorous SAE International standards.
Does it include a reservoir and sensor?
Yes. The reservoir and sensor are both included with this master cylinder. 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 they may be reused.
What are signs the master cylinder may need replacing?
A pedal that slowly sinks under steady pressure, a low or spongy pedal, or brake fluid leaking at the cylinder may be signs. Diagnose the cause before replacing.
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Dorman - First Stop Brake Master Cylinder P/N:M630323
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