Hello!
We're working on a 56 GMC 450 truck and have run into a problem.
We've exhausted all local resources for replacement of an inoperable Master Cylinder.
The casting number is: 5455375
Bore is 1 and 1/2 inches.
Wagner part number is: F23870
Would anyone know of either a source for a replacement, or a reputable rebuilder for the core we have? -Actually, we don't like the idea of shipping our core off....and hoping it doesn't get lost....so we would MUCH prefer to purchase a functional replacement!
Thanks in advance for any assistance!!!!
