Upper rear hydraulic unit with lever, assembly: a brake master cylinder with a lever for a hydraulically actuated rear brake. The lever builds pressure in the brake fluid through the piston.
Replace the unit if there are fluid leaks, a "sinking" lever, poor braking, or housing damage. After installation the system must be bled, and compatibility with your model should be checked when ordering. Work on the brake system carefully: brake fluid damages paint and plastic.
