I just got a new master cylinder from Rock Auto (Dorman pn M75817). The entry specified the Kelsey Hayes disk brakes, which my '72 Swinger has from the factory.
The new MC has different size reservoirs for the front and rear brakes, and the sizes for the brake lines are 1/2" front and 9/16" rear. The master cylinder on the car has equal sized reservoirs, and the brake lines are the same size.
Did I receive the wrong MC, or was the wrong MC on the car from a previous owner? Any help would be appreciated!
vm