Dorman - First Stop Brake Master Cylinder P/N:M39403
Turn every press of the pedal into hydraulic pressure at the wheels with the Dorman brake master cylinder M630471 from Dorman - First Stop. It is a direct-fit replacement for the 2007-2011 and 2019 Toyota Yaris, precision-engineered to match the original master cylinder's design, function and performance on the listed applications.
Made from new, high-quality materials, this Toyota Yaris master cylinder is intended as a safe, durable replacement. Signs a master cylinder may need replacing include a soft or sinking brake pedal, brake fluid leaking around the unit, or a steadily dropping fluid level. Other brake components can cause similar symptoms, so diagnose the brake system before replacing parts. See the Buyer's Guide tab for full fitment details.
Interchange: 13-3388 · 11-4544 · 130.44125 · 355-76054
133388 · 114544 · 13044125 · 35576054 · NM4223 · MC391006 · 4720152320 · F142321 · MC142321
This part cross-references / interchanges with the following part numbers:
What does a brake master cylinder do?
It converts the force on the brake pedal into hydraulic pressure and sends brake fluid through the brake lines to the wheels to apply the brakes.
Which vehicles does this master cylinder fit?
It is a direct-fit replacement for the 2007-2011 and 2019 Toyota Yaris. Check the Buyer's Guide tab to confirm your exact vehicle.
What are the rubber components made of?
All rubber components are made of a high-quality EPDM compound, which resists glycol-based brake fluid.
What standards does this Dorman master cylinder meet?
It is made entirely from new, high-quality materials and built to meet rigorous SAE International standards.
What are signs of a failing Yaris brake master cylinder?
A soft or sinking pedal, fluid leaking around the unit, or a dropping fluid level may point to a worn master cylinder. Diagnose the brake system first, as other parts can cause similar symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.