Brake Master Cylinders, 8.25", Matco

The MC4 is a "Laydown" type brake master cylinder which uses a remote reservoir. The MC4 measures 8.25" long with a 5/8" bore and 1.33" stroke for a displacement of 0.43 cubic inches. The MC-4A measures 7.70" long with a 5/8" bore and 1.191" stroke for a displacement of 0.37 cubic inches. Fitting holes are 1/8" NPT. It uses Buna-n O-rings and requires MIL-H-5606 red aircraft hydraulic fluid.