Brake Master Cylinder for 2012-2019 Toyota Yaris - Dorman M630932

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$198.99
MPN: M630932
UPC: 885484897670
Item Package Quantity: 1
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Dorman - First Stop Brake Master Cylinder P/N:M630932
Dorman - First Stop Brake Master Cylinder P/N:M630932
$198.99

Turn brake-pedal effort into hydraulic pressure for your brakes with the Dorman First Stop Brake Master Cylinder M630932, a brand-new master cylinder built as a direct-fit replacement for the 2012-2019 Toyota Yaris. Dorman engineered it to replicate the original master cylinder's design, function and performance on the listed applications. It uses new, high-quality materials for a safe, durable replacement.

  • Precise replacement: The cast iron cylinder housing is built to match the casting material of the original part for similar performance.
  • Durable design: All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
  • 100% new: It is made entirely of new materials, with a focus on quality and safety.
  • Strict specifications: It is made to meet rigorous SAE International standards.

Specifications: The bore diameter is 0.812 in. It has two outlets: the secondary outlet thread is M12 x 1.0, and the primary outlet thread pitch is 1 mm. A single reservoir and a sensor are included. Mounting hardware is not included. The package contains one master cylinder. Country of origin: Taiwan.

Signs a master cylinder may need replacing include a soft or sinking brake pedal, brake fluid leaking at the master cylinder, or a falling fluid level. These symptoms can have other causes, so diagnose the brake system before replacing parts. After installation, bleed the brakes as directed by the vehicle service procedure.

Interchange: 100-4104 · 130.44515 · 355-76096
NM55618 · MC391518 · 4720152620 · 1004104 · 13044515 · 35576096

This part cross-references / interchanges with the following part numbers:

100-4104, 130.44515, 355-76096, NM55618, MC391518, 4720152620

Frequently Asked Questions

Is this the right master cylinder for a 2012-2019 Toyota Yaris?

Yes. It is listed for the 2012-2019 Toyota Yaris with all engines. That application uses one master cylinder per vehicle.

Does it come with a reservoir?

Yes. The M630932 includes a single reservoir and a sensor. Mounting hardware is not included.

What is the housing made of?

The cylinder housing is cast iron. All rubber components use a high-quality EPDM compound designed to resist glycol-based brake fluid.

What are the bore and outlet specifications?

It has a 0.812 in. bore diameter and two outlets. The secondary outlet thread is M12 x 1.0, and the primary outlet thread pitch is 1 mm.

What are signs a master cylinder may need replacing?

Possible signs include a soft or sinking pedal, fluid leaking at the master cylinder, or a falling fluid level. These can have other causes, so diagnose the brake system first.