Dorman - First Stop Brake Master Cylinder P/N:M39403
Turn pedal effort into hydraulic braking pressure with the Dorman First Stop Toyota Tundra master cylinder, part number M630588. It is a direct-fit replacement for the 2007-2015 Toyota Tundra, the 2008-2019 Toyota Sequoia and the 2017-2019 Toyota Tundra (All engines). Dorman precision-engineered it to replicate the original master cylinder's design, function and performance on these listed applications.
The reservoir and a sensor are included; mounting hardware is not. The unit has a 0.938-inch bore diameter and two outlets, with M12 x 1.0 secondary outlet threads and a 1 mm primary outlet thread pitch.
Signs a master cylinder may need replacing include a soft or sinking brake pedal, fluid leaking at the cylinder, or a falling brake fluid level with no other visible leak. Other brake components can cause the same symptoms, so diagnose the cause before replacing. Country of origin: China.
Interchange: 100-1672 · 13-3324 · 11-3324 · 130.44744 · 355-76145
1001672 · 133324 · 113324 · 13044744 · 35576145 · NM4239 · MC391085 · 472010C070 · F143063 · MC143063
This part cross-references / interchanges with the following part numbers:
Which years does this Toyota Sequoia master cylinder fit?
It is listed for the 2008-2019 Toyota Sequoia with All engines, one per vehicle.
Which model years does this Tundra master cylinder fit?
It is listed for the 2007-2015 and 2017-2019 Toyota Tundra with All engines, one per vehicle.
Does the Toyota Tundra brake master cylinder include a reservoir?
Yes. Dorman M630588 includes the reservoir and a sensor. Mounting hardware is not included.
What are the rubber components made of?
All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
What are signs a brake master cylinder may need replacing?
A soft or sinking pedal, fluid leaking at the cylinder, or a falling fluid level can be signs. Other brake parts can cause similar symptoms, so diagnose the cause first.
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.