Dorman - First Stop Brake Master Cylinder P/N:M630191

Convert brake-pedal force into the hydraulic pressure that operates the entire brake system with the Dorman First Stop Brake Master Cylinder (M630191). It drops in as a direct-fit replacement for the 1999-2003 Hyundai Sonata [All] and the 2001-2005 Kia Optima [All].

Features:

• Aluminum housing: constructed to match the casting material of the original part for similar performance.
• EPDM seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: built entirely from new materials, not remanufactured.
• SAE standards: made to meet rigorous SAE International standards.

The unit has a 0.938 in bore and four outlets, with rearward/secondary outlet threads of M16 x 1.5 and M10 x 1.0 depending on application. It includes the reservoir and the fluid-level sensor; mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the original master cylinder may need replacing include a pedal that slowly sinks under steady pressure, a low or spongy pedal, or fluid leaking at the cylinder. If a failed master cylinder is the cause, this replaces it. Country of origin: China.

Interchange: 83-16720 · 8316720 · 100-2031 · 1002031 · M-52720 · M52720 · 13-3018 · 133018 · 11-3018 · 113018 · 130.51020 · 131.51020 · MC500540 · 355-03020 · 35503020 · 5851038004 · M55154 · M55200 · NM55154 · NM55200 · MC390728 · F134572 · MC134572
Manufacturer part number M630191