Ford master brake cylinder bore size

[Lynn Eades]

What is the master cylinder bore size of an F15 or F30 and can someone post pictures of the m/cyl. please? Thank you in advance.

[Jacques Reed]

Hi Lynn,

I am assuming F15 and F15-A brake master cylinders are the same so the dimensions below are from my F15-A. Will stand corrected if they are different.

The bore is 1.250" diameter. The piston measure 1.247" diameter.

See photo attached.

Cheers,

[rob love]

All the Ford trucks from 8cwt to the 60cwt and the gun tractor used the same 1.25 bore diameter master cylinder. The only exception was that the F60H could have a 1.50 diameter cylinder.

The Ford part number was 91T2141, and the current part number for a number of the jobbers is mc4572.

[Lynn Eades]

Many thanks guys, I was having difficulty with finding the bore size, Plenty of part numbers, but no size
I need two of them for my carrier so who is the best supplier?

It seems the number is 91T2140 (2141 is the body?) Macs has them at $69.95 each, Is that good? Are they American made?

[rob love]

My mistake, yes you are right, 2140 is the group for the master cylinder complete.

If you were to order right now, Rock auto has two of "CARDONE SELECT Part # 1334572" for just under $30 each Cdn.

I can't say where these are manufactured, since just about everyone is having portions if not all their product made in China. I have used a half dozen or more of the modern production master cylinders in the last few years and had no issues with any of them.