Turn pedal effort into hydraulic brake pressure with the Dorman First Stop Brake Master Cylinder M630050, a new unit precision-engineered to match the design, function and performance of the original master cylinder. It fits many vehicles, among them the 1999-2006 Volkswagen Jetta, 1999-2006 Volkswagen Golf and 1998-2005 Volkswagen Beetle, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
The master cylinder converts force at the brake pedal into hydraulic pressure that feeds the brake lines. If the original unit is leaking or can no longer hold pressure, this new replacement is designed to take its place.
- Precise replacement: the aluminum cylinder housing is constructed to match the casting material of the original part, for similar performance.
- Durable design: every rubber component is made from a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: built entirely from new materials, with a focus on quality and safety.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 24 mm bore diameter; two outlets; M12 x 1.0 secondary and rearward outlet threads; 1 mm primary outlet thread pitch. The package contains the master cylinder only. The reservoir, sensor and mounting hardware are not included, so transfer or replace them as the service procedure directs, and consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 83-62017 · 83-96417 · 100-1108 · M-02417 · M-04017 · 072-9378 · 13-2874 · 11-2874 · 130.33417
8362017 · 8396417 · 1001108 · M02417 · M04017 · 0729378 · 132874 · 112874 · 13033417 · M901199 · 13699 · MC251630 · 1J1614019 · M55273 · NM55273 · MC390500 · F140063 · MC140063
This part cross-references / interchanges with the following part numbers:
83-62017, 83-96417, M901199, 100-1108, M-02417, M-04017, 072-9378, 13699, 13-2874, 11-2874, 130.33417, MC251630, 1J1614019, M55273, NM55273, MC390500, F140063, MC140063
