This is a brand new not rebuilt master cylinder for front disc and rear drums. Has the original casting number of 5468309 like original on the right hand side. It's cast Iron like original with bleeders valves on the left hand side. It has a 1-1/8" bore and 9/16" & 1/2" ports on left side. Use DOT 3 brake fluid only.
Fits:
1967-69 Camaro
1968-69 Chevelle
