Master Cylinder
WARNING: This page is about a different car, the 1991 Oldsmobile Toronado, 1991 Cadillac Seville, 1991 Cadillac Eldorado, 1991 Buick Riviera, and 1991 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
The Delco Moraine Compact 2-Port master cylinder is a composite design to be used in a diagonally split system. The left front and right rear brakes are served by one piston and the right front and left rear are served by the other.
The master cylinder body is aluminum with a plastic fluid reservoir. It incorporates the functions of a standard dual master cylinder. A fluid level sensor switch is installed in the master cylinder reservoir.