Dorman - First Stop Brake Master Cylinder P/N:M630833

Convert brake-pedal force into reliable hydraulic pressure with the Dorman - First Stop Brake Master Cylinder M630833, engineered to reproduce the original master cylinder's design, function, and performance on the 1998-2005 Volkswagen Beetle, 1999-2006 Volkswagen Golf and Jetta, 2000-2002 Audi TT and TT Quattro, 2001-2005 Seat Toledo, and 2005 Volkswagen Bora. It installs as a direct-fit replacement on the listed applications.

The master cylinder is the hydraulic heart of the brake system, converting pedal effort into the pressure that operates the brakes. This unit has two outlets, a 0.938 in bore diameter, and an M12 x 1.0 rearward/secondary outlet thread.

• 100% new: built entirely from new materials — not remanufactured — and made to meet rigorous SAE International standards.
• 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 to resist glycol-based brake fluid.
• Ready to fit: 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.

Signs the original master cylinder may need replacing include a soft or spongy pedal, a pedal that slowly sinks under steady foot pressure, or brake-fluid seepage at the cylinder. If a failed master cylinder is the cause, this unit replaces it. Country of origin: China.

Interchange: 13-2874 · 132874 · 11-2874 · 112874 · 130.33417 · 131.33417 · 355-74042 · 35574042 · MC390500 · 1J1614019 · R134868