I'm trying to look up the correct parts for replacing the brake booster and master cylinder on my 1972 F250 4x2 w/360 (serial number M80,000+) with front power dual-piston caliper disks and rear drums, but I'm finding conflicting information regarding 1" vs. 1.25" inlet, etc. I am doing a brake job to replace worn-out rotors, calipers, and lines and want to tackle this as part of the project as I suspect the diaphragm is bad with the booster, causing a vacuum leak and weeping of fluid down its front bottom half and the old MC was also always weeping brake fluid all the time.

Would love to know if anyone has any insight on the correct or recommended parts. Thanks also always for any help.

 

Here is the MC listing gathered from the MPC:
https://www.fordification.com/partno...ercylinder.htm
From the MPC:
http://www.fordification.com/mpc/sec...sec23-1_01.htm
The partly compiled MPC:
http://www.fordification.com/mpc/index.htm

 

Thanks, @RichS2659-

I was able to quickly diagnose that Dorman M83074 Brake Master Cylinder is the match for obsolete ford part D0AZ-2140-C (the 1 1/4 inch bore size).

I apologize for being such an amateur with this, but is there another similar chart to help me figure out what the original ford part number for the brake booster so I can find something compatible?

 

That is section 23.1 of the MPC , the second link I provided. It would be on line 69A and more info on the second page under line 69A. Base # is 2005.