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Dorman - First Stop Brake Master Cylinder P/N:M630933
$186.99
Restore firm, confident brake-pedal feel with the Dorman - First Stop Brake Master Cylinder M630933. It drops in as a direct-fit replacement for the 2012-2019 Toyota Yaris, converting the force of your foot on the pedal into the hydraulic pressure that operates the brake system.
- Core function: Pressurizes brake fluid to actuate the vehicle's braking hydraulics when the pedal is applied.
- Direct-fit replacement: Engineered to install on the listed Toyota Yaris applications.
- Signs this part may need replacing: A sinking or spongy pedal, a pedal that slowly drops under steady pressure, or fluid loss can indicate a worn master cylinder — diagnose the cause before replacing.
If a failed master cylinder is the source of your braking issue, this unit replaces the original. After installation, the brake system must be properly bled to remove trapped air before returning the vehicle to service. Always confirm fitment for your specific vehicle.
Interchange: 100-4105 · 1004105 · 130.44517 · 13044517 · 355-76099 · 35576099 · NM55614 · MC391517 · 4720152640 · 4720152642
Manufacturer part number M630933 · Part Eazy SKU M630933
This part cross-references / interchanges with the following part numbers:
100-4105, 130.44517, 355-76099, NM55614, MC391517, 4720152640, 4720152642
Frequently Asked Questions
What does a brake master cylinder do?
It converts the force you apply to the brake pedal into hydraulic pressure, sending brake fluid through the system to actuate the brakes.
Will this fit my vehicle?
It is a direct-fit replacement for the 2012-2019 Toyota Yaris. Check the Buyer's Guide tab and confirm fitment for your specific vehicle before ordering.
What are signs my master cylinder may be failing?
A sinking or spongy pedal, a pedal that slowly drops under steady pressure, or brake fluid loss can point to a worn master cylinder. Diagnose the cause before replacing.
Do I need to bleed the brakes after installing this?
Yes. After installing the master cylinder, the brake system should be properly bled to remove trapped air before the vehicle is returned to service.
What interchange numbers does this replace?
It cross-references 100-4105, 130.44517, 355-76099, NM55614, MC391517, 4720152640, and 4720152642. Its own manufacturer part number is M630933.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M630933
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