Review on Motorcraft BRMC155 Brake Master Cylinder by Jason Bollinger

This is a good quality part. As in the photo, with reservoir. Probably a rare repair but I suspect ours may have deteriorated due to a bad vacuum valve (probably rare again) resulting in brake fluid being dumped into the vacuum booster. The fluid loss happened before we bought the used car, so we didn't know until we heard a hissing sound and fluid intermittently dripping onto the floor under the brake pedal (and a rare "Check Brakes" light which we ignored, because we got blunt, and the brakes are heavy when the cruise control is off). Replaced the vacuum valve (valve "h"?) which was hard to find as Ford doesn't seem to sell it for the 2011 Explorer. I used (I think) a Taurus vacuum valve assembly and reused our booster hose and fitting. The "h" vacuum valve assembly from the Taurus was an almost snug fit, but the hose fitting to the booster was the only thing that didn't fit. The amplifier also had to be replaced. It was a complex project for what it was. In particular, installing the booster around the brake lines for the ABS was particularly tricky when pulling out the old one. I had to bend things a bit. However, that master cylinder was a breeze to replace. except for the "bench bleed" method as it has been difficult to find fittings for this on short notice so you may need to order these when ordering this master cylinder as the fittings will not match those found in the standard bleed kits that you would find locally. In fact, this cylinder should be bled before installation to avoid problems with air bubbles in the ABS module. Most of you reading this probably already know about this, but it's worth mentioning.