Review on Raybestos MC390508 Professional Master Cylinder by Matt Abba

The Raybestos brake master cylinder is a quality replacement part. This is the perfect replacement for my old broken one. Everything about this replacement is top notch. 4 stars and the reason why the new master cylinder has to be "desktop". It's important to get all the air out of the keg cavity, and pumping on the stand solves that problem. Two small special adapters and two short flexible hoses are required for pumping on the workbench. A new master cylinder should come with these parts instead of the installer having to run around looking for the right fittings, especially when the cost is only pennies.