Disc Drum Brake Cylinder With OEM MC39546 For GMC C6000

The cast iron material made master cylinder fits for Chevrolet and GMC. There is only one port in left side with the thread size of 1/2-20″. The bore diameter of MC39546 is 1.5″ equal to 38mm. The intercharge numbers are M39546, 13-39546, 10-39546 and MCA39546.

The application details:

Chevrolet
C60 1985-79
C70 1982-79

GMC
C6000 1985-79
C7000 1982-79