REPRODUCTION. You are purchasing a master cylinder for cars with power brakes. This unit comes with the filler cap and has a 1/4 inch valve fitting. There are two different valve fitting sizes that were used originally; 1/4 inch and 5/16 inch. If you have a 5/16 inch valve fitting, you should be able to swap your original valve fitting with the one that comes with this master cylinder. We DO NOT have replacement 5/16 inch valve fittings available.
1954-1955 Cadillac Models WITH Power Brakes
*Compatible with DOT 3 or DOT 4 brake fluid. During the installation and use of these units, it is not recommended to use any silicone synthetic brake fluids as it can negatively affect the rubber components in the kit.