Turn pedal effort into hydraulic brake pressure with the Dorman First Stop Brake Master Cylinder M630033, a new Cavalier master cylinder replacement that is a direct fit for the 2000-2005 Chevrolet Cavalier and the 2000-2005 Pontiac Sunfire, all engines. Dorman designed it to match the original master cylinder's design, function and performance on the listed applications, and built it from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum cylinder housing is built to match the original part's casting material for similar performance.
- Durable design: all rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials for quality and safety.
- Strict specifications: built to meet rigorous SAE International standards.
Specifications: 0.875 in bore diameter, two outlets, M11 x 1.5 rearward outlet, M12 x 1.0 secondary outlet thread and 1 mm primary outlet thread pitch. A reservoir and a sensor are included. Mounting hardware is not included. Country of origin: China.
A soft or sinking pedal, brake fluid leaking at the master cylinder or a reservoir level that keeps dropping can be signs this part may need replacing. Other brake components can cause the same symptoms, so diagnose the system before you replace anything. After installation, bleed the brake system as the vehicle service procedure directs.
Interchange: 174-761 · 100-2333 · M-82113 · 13-2926 · 10-2926 · 130.62119 · 131.62119 · 355-47089
174761 · 1002333 · M82113 · 132926 · 102926 · 13062119 · 13162119 · 35547089 · 13553 · MC500200 · 18042801 · M3091 · NM3091 · MC390646 · F139957 · MC139957
This part cross-references / interchanges with the following part numbers:
174-761, 100-2333, M-82113, 13553, 13-2926, 10-2926, 130.62119, 131.62119, MC500200, 355-47089, 18042801, M3091, NM3091, MC390646, F139957, MC139957
Frequently Asked Questions
Which vehicles does the Dorman M630033 master cylinder fit?
It is a direct-fit replacement for the 2000-2005 Chevrolet Cavalier and the 2000-2005 Pontiac Sunfire, all engines. Check the "Vehicles it fits" section to confirm your vehicle.
What does a brake master cylinder do?
It converts the force from the brake pedal into hydraulic pressure and sends brake fluid through its outlets to the brake lines, which apply the brakes at each wheel.
What are the main specifications of the M630033?
It has an aluminum housing, a 0.875 in bore and two outlets: an M11 x 1.5 rearward outlet and an M12 x 1.0 secondary outlet thread. Its rubber components use an EPDM compound.
What comes in the box?
The package contains the master cylinder, which includes a reservoir and a sensor. Mounting hardware is not included, so check the vehicle service information for the correct fasteners and whether the originals may be reused.
What are signs a master cylinder may need replacing?
Signs include a soft or sinking brake pedal, fluid leaking at the master cylinder, or a reservoir level that keeps dropping. Other brake parts can cause these symptoms, so diagnose the system first.
