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Dorman - First Stop Brake Master Cylinder P/N:M630914
$160.99
Convert brake-pedal force into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder M630914. It drops in as a direct-fit replacement for the listed applications, including the 2015-2020 Cadillac Escalade and Escalade ESV, 2015-2019 Chevrolet Silverado 1500, 2015-2020 Chevrolet Suburban and Tahoe, 2015-2019 GMC Sierra and Sierra 1500, 2015-2020 GMC Yukon and Yukon XL, and the Chevrolet Cheyenne (2014-2016 and 2018-2019) — see the Buyer's Guide tab for the full list. It's precision-engineered to replicate the design, function, and performance of the original master cylinder for these applications.
- Cast iron housing: built to match the casting material of the original part for similar performance.
- Durable rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new: made entirely of new materials, not remanufactured.
- Strict specifications: made to meet rigorous SAE International standards.
This unit has a single reservoir and a sensor included, with two outlets, a 1.313-inch bore, and M14 x 1.5 outlet threads. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the master cylinder may need replacing include a slowly sinking or spongy brake pedal; if a failed master cylinder is the cause, this replaces it. Country of origin: China.
Interchange: 100-3953 · 1003953 · 13-4668 · 134668 · 130.66076 · 355-47202 · 35547202 · 20925765 · NM4297 · Manufacturer part number M630914.
This part cross-references / interchanges with the following part numbers:
100-3953, 13-4668, 130.66076, 355-47202, 20925765, NM4297
Frequently Asked Questions
What does this master cylinder do?
It converts the force from your brake pedal into the hydraulic pressure that actuates the brakes at each wheel.
Does it include a reservoir and sensor?
Yes. This unit has a single reservoir and a sensor included, per the catalog attributes.
Is mounting hardware included?
No. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What are its key specs?
A cast iron housing with a 1.313-inch bore, two outlets, and M14 x 1.5 outlet threads.
Will this fit my vehicle?
It's a direct-fit replacement for the listed applications, such as the Cadillac Escalade, Chevrolet Silverado 1500, and GMC Sierra. Check the Buyer's Guide tab for the full list.
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Dorman - First Stop Brake Master Cylinder P/N:M630914
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