Dorman M630749 brake master cylinder for the 2010-2011 Volkswagen GTI and other vehicles turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is precision-engineered to match the original's design, function and performance.
- Aluminum housing with a 0.875 in bore diameter
- Rubber components made of EPDM compound that resists glycol-based brake fluid
- Made entirely of new materials
- Built to meet rigorous SAE International standards
- Part of the Dorman First Stop line
Quick facts
- Part: Dorman M630749 brake master cylinder
- Fits: 2010-2011 Volkswagen GTI and other vehicles
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks, or brake fluid showing around the cylinder, can point to a worn master cylinder. A leaking caliper, a worn brake hose or a low fluid level can be behind these signs too, so find the cause before buying a replacement.
Fits
The 2010-2011 Volkswagen GTI, the 2006-2010 Audi A3 and the 2006-2010 Audi A3 Quattro are among the vehicles this master cylinder fits, and each takes one. Don't see your car? Look it up in the "Vehicles it fits" section.
Specifications
Fit and size
- Bore diameter: 0.875 in
- Number of outlets: 2
- Rearward outlet size: M12 x 1.0
- Secondary outlet thread diameter: M12 x 1.0
- Primary outlet thread pitch: 1 mm
- Quantity per vehicle: 1
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One brake master cylinder. The reservoir, mounting hardware and sensor are not included, so plan on new fasteners rather than reusing old ones.
Interchange: 100-4084 · 13-3674 · 11-3674 · 11-3875 · 130.33124 · 130.33125 · 130.33427 · 355-74005
MC391346 · 1K1614019B · 1K1614019F · F142349 · MC142349
This part cross-references / interchanges with the following part numbers:
100-4084, 13-3674, 11-3674, 11-3875, 130.33124, 130.33125, 130.33427, 355-74005, MC391346, 1K1614019B, 1K1614019F, F142349, MC142349
Frequently Asked Questions
Is this a brake master cylinder for the 2006-2010 Audi A3?
Yes. Dorman M630749 fits the 2006-2010 Audi A3 and the 2006-2010 Audi A3 Quattro, and each takes one. Other cars are in the "Vehicles it fits" section.
Does this master cylinder come with the reservoir?
No. The package holds only the master cylinder; the reservoir, mounting hardware and sensor are not included.
What size outlet threads does this Dorman master cylinder have?
Dorman M630749 has two outlets. The rearward outlet and the secondary outlet thread are both M12 x 1.0, and the primary outlet thread pitch is 1 mm.
What are the rubber parts in this master cylinder made of?
All rubber components are EPDM compound, which resists glycol-based brake fluid. The cylinder housing is aluminum.
Can Dorman M630749 replace a master cylinder numbered 1K1614019B?
Yes. 1K1614019B is one of the cross-reference numbers for Dorman M630749, listed on the Interchange line along with the other numbers.
