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Dorman - First Stop Brake Master Cylinder P/N:M630002
$158.99
Turn firm pedal pressure into the hydraulic force that operates the brake circuits with the Dorman - First Stop Brake Master Cylinder M630002. Engineered to drop in like the factory unit, it serves as a direct-fit replacement for the 2003-2007 Hummer H2 (All).
Features:
- Aluminum housing: built to match the casting material of the original part for similar performance.
- Two-outlet design: 37 mm bore with a 1/2-20 secondary outlet thread.
- EPDM rubber components: made of a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new: made entirely of new materials, not remanufactured, and built to rigorous SAE International standards.
The reservoir and sensor are included; mounting hardware is not — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 100-2631 · 1002631 · 13-3106 · 133106 · 10-3106 · 103106 · 130.66042 · 355-47169 · 35547169 · 18047533 · NM4204 · F140465 · F144044 · MC140465 · MC144044. Manufacturer part number M630002.
This part cross-references / interchanges with the following part numbers:
100-2631, 13-3106, 10-3106, 130.66042, 355-47169, 18047533, NM4204, F140465, F144044, MC140465, MC144044
Frequently Asked Questions
What does this brake master cylinder do?
It generates the hydraulic pressure that pushes brake fluid to the brake circuits when you press the pedal. Signs it may need replacing include a sinking or spongy pedal and internal fluid loss.
Will it fit my vehicle?
It is a direct-fit replacement for the 2003-2007 Hummer H2 (All). Check the Buyer's Guide tab to confirm it matches your vehicle.
Are a reservoir and sensor included?
Yes. According to the catalog, both the reservoir and the sensor are included with this master cylinder.
Is mounting hardware included?
No. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What is it made of?
The housing is aluminum, built to match the casting material of the original, and all rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
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Dorman - First Stop Brake Master Cylinder P/N:M630002
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