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Dorman - First Stop Brake Master Cylinder P/N:M630866
$163.99
Turn every push of the brake pedal into the hydraulic pressure that operates the braking system with the Dorman First Stop Brake Master Cylinder M630866. It drops in as a direct-fit replacement for the 2006-2010 Volkswagen Passat, 2009-2017 Volkswagen CC, 2009-2010 Volkswagen Passat CC, 2009-2017 Volkswagen Tiguan, 2013-2018 Audi Q3 Quattro, 2015-2019 Audi Q3, and 2018 Volkswagen Tiguan Limited (all engines), engineered to match the design, function, and performance of the original master cylinder on the listed applications.
- 100% new: built entirely from new materials, not remanufactured.
- EPDM seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- Strict specifications: made to meet SAE International standards.
This unit has two outlets, a 0.938 in bore diameter, and a rearward outlet size of M12 x 1.0. It does not include a reservoir, mounting hardware, or a sensor; the package contains the master cylinder only, so consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 100-4083 · 1004083 · 13-3500 · 133500 · 11-3500 · 113500 · 130.33131 · 355-74009 · 35574009 · NM55534 · MC391414 · 3C1614019C · 3C1614019E · R135275 · Manufacturer part number M630866
This part cross-references / interchanges with the following part numbers:
100-4083, 13-3500, 11-3500, 130.33131, 355-74009, NM55534, MC391414, 3C1614019C, 3C1614019E, R135275
Frequently Asked Questions
What does this brake master cylinder do?
It converts force from the brake pedal into hydraulic pressure that is sent through its two outlets to operate the vehicle's braking system.
Which vehicles does the M630866 fit?
It fits the 2006-2010 VW Passat, 2009-2017 VW CC and Tiguan, 2009-2010 VW Passat CC, 2013-2018 Audi Q3 Quattro, 2015-2019 Audi Q3, and 2018 VW Tiguan Limited (all engines). See the Buyer's Guide tab.
Does it come with a reservoir, sensor, or mounting hardware?
No. A reservoir, sensor, and mounting hardware are not included; the package contains the master cylinder only. Consult the vehicle service information for the correct fasteners.
What is this master cylinder made of?
The cylinder housing is aluminum, constructed to match the casting material of the original part, and its rubber components use a high-quality EPDM compound resistant to glycol-based brake fluid.
What are signs my master cylinder may need replacing?
A sinking or spongy pedal, unexplained brake fluid loss, or external fluid leakage may be signs. Diagnose the cause first, since these symptoms can have other sources, then replace this MPN if the master cylinder is at fault.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M630866
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