Review on Dorman M630386 Brake Master Cylinder by Will Porter

Ideal for replacing a leaking master cylinder on my 2003 Mitsubishi Outlander. Tip for bleeding this cylinder at work: Only screws are included for bleeding the two smaller connections. In other words, nothing is blocking the two large holes at the bottom of the cylinder. To solve this problem, cut the bottle in half lengthwise and fill it with brake fluid. Then just keep the bottom connectors submerged in liquid while pumping the plunger. So you can relieve bleeding in no time.