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Dorman - First Stop Brake Master Cylinder P/N:M630576
$105.99
Convert brake-pedal effort into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder M630576. It installs as a direct-fit replacement for the 2008 Chevrolet Malibu, 2008 Pontiac G6, and 2008 Saturn Aura (all engines), and this 100% new unit is built entirely from new materials — not remanufactured.
- 100% new, not remanufactured: made completely of new materials and built to meet rigorous SAE International standards.
- Durable EPDM seals: the 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.
- Two outlets: a 0.938 in bore, with secondary/rearward outlet threads of M13 x 1.5 and a 1.5 mm primary outlet thread pitch; the reservoir and sensor are included.
If a failed master cylinder is the cause of a sinking or spongy brake pedal or fluid leaking at the cylinder, this replaces it. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 100-2933 · 1002933 · 13-3367 · 133367 · 10-3367 · 103367 · 10-3700 · 103700 · 130.62154 · 13062154 · 355-47106 · 35547106 · 25872283 · NM4185 · MC391185 · F144422 · MC144422 · R135118
Manufacturer part number M630576
This part cross-references / interchanges with the following part numbers:
100-2933, 13-3367, 10-3367, 10-3700, 130.62154, 355-47106, 25872283, NM4185, MC391185, F144422, MC144422, R135118
Frequently Asked Questions
What vehicles does the M630576 master cylinder fit?
It's a direct-fit replacement for the 2008 Chevrolet Malibu, 2008 Pontiac G6, and 2008 Saturn Aura (all engines). Check the Buyer's Guide tab to confirm your vehicle.
Are the reservoir and sensor included?
Yes. Per the catalog, both the reservoir and the sensor are included. Package contents: master cylinder.
Is mounting hardware included?
No. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What is the bore size and outlet thread?
It has a 0.938 in bore and two outlets; the secondary/rearward outlet threads are M13 x 1.5, with a 1.5 mm primary outlet thread pitch.
What are signs my master cylinder may need replacing?
A sinking or spongy brake pedal, fluid leaking at the cylinder, or a dropping reservoir level. Diagnose the cause first; if the master cylinder is the cause, this replaces it.
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Dorman - First Stop Brake Master Cylinder P/N:M630576
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