Review on 🔥 Enhanced Performance Brake Master Cylinder: Raybestos MC390909 by Will Murphy

I bought the master cylinder for my son's Escape, the master bled it on the stand, took the old one out of his car, fitted a new one, drove around and bled all the brakes, everything checked ok. The next morning, my son went to school, slammed on the brakes, and had to rock them many times to stop. When I got home after school, I took off the new master and disassembled it, came to find out and still can not understand why it did not flow immediately, there is no O-ring at the bottom of the tank, and it there was also no seal that goes against the brake booster. Revain get rid of this company!