Dorman M630079 brake master cylinder for the 1995-1999 Volkswagen Jetta and other vehicles converts pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is built to match the design, function and performance of the original on specific vehicle years, makes and models.
- Dorman First Stop line brake master cylinder
- Aluminum housing constructed to match the casting material of the original part
- All rubber components are made of EPDM compound for resistance to glycol-based brake fluid
- Made entirely of new materials
- Made to meet rigorous SAE International standards
Quick facts
- Part: Dorman M630079 brake master cylinder
- Fits: 1995-1999 Volkswagen Jetta and other vehicles
- Material: Aluminum
- Condition: New
A failing master cylinder can show up as a soft or sinking brake pedal, brake fluid leaking at the cylinder, or a reservoir level that keeps dropping. Before you replace it, rule out a leaking brake line, a leaking caliper or air in the system, since those can also give a soft pedal, and have a shop test the brakes if you are unsure.
Fits
As a brake master cylinder, it is a direct-fit replacement for the 1995-1999 Volkswagen Jetta, the 1995-1999 Volkswagen Golf, the 1996-1997 Volkswagen Passat and other vehicles.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 0.938 in
- Number of outlets: 2
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: M10 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
This listing is one master cylinder, and each vehicle takes one. The reservoir, sensor and mounting hardware are not included, so plan on new mounting hardware.
Interchange: 100-1104 · M-02413 · 13-2782 · 11-2782 · 130.33413 · 131.33413 · 355-74038
M901226 · 13595 · MC500030 · MC500620 · M55275 · M55278 · MC390433 · 3A1698019 · F128225 · F140081 · MC128225 · MC140081
This part cross-references / interchanges with the following part numbers:
M901226, 100-1104, M-02413, 13595, 13-2782, 11-2782, 130.33413, 131.33413, MC500030, MC500620, 355-74038, M55275, M55278, MC390433, 3A1698019, F128225, F140081, MC128225, MC140081
Frequently Asked Questions
Will the Dorman M630079 Jetta master cylinder work on a 1995-1999 Volkswagen Jetta?
Yes. Dorman M630079 is a direct-fit master cylinder for the 1995-1999 Volkswagen Jetta and many other vehicles. If your car is a different model, look it up in the "Vehicles it fits" section on this page.
Does Dorman make a Golf brake master cylinder for the 1995-1999 Volkswagen Golf?
Yes. The M630079 fits the 1995-1999 Volkswagen Golf, and it also fits the 1996-1997 Volkswagen Passat.
Does the Dorman master cylinder come with the reservoir?
No. The Dorman M630079 is sold as the master cylinder alone. The reservoir, sensor and mounting hardware are not included.
What are the bore size and outlet threads on this master cylinder?
The bore diameter is 0.938 in. It has two outlets: the rearward and secondary outlets are M10 x 1.0, and the primary outlet thread pitch is 1 mm.
What are the seals in this master cylinder made of?
All rubber components are EPDM compound, chosen for resistance to glycol-based brake fluid. The cylinder housing is aluminum.
