Master Cylinder specs

Part number:

383059

There some more info in the dual servo thread on mad about kit cars:

http://madabout-kitcars.com/forum/showthread.php?t=3149&page=19

These do seem to be difficult to identify as they don’t list on the part number shown on the side. Ford Sierras come up on related searches. This one looks externally very similar: https://www.euspares.co.uk/parts/metelli/7722894

Brake Master Cylinder, EAN 2212121981840

Diameter [mm]: 22,00
Material: Cast Iron
Condition: New
Designation: Brake Master Cylinder
Manufacturer: METELLI
EAN: 2212121981840
Item number: 05-0099

Searching on the metelli part number: https://www.google.com/search?q=METELLI++05-0099&client=firefox-b-d&sxsrf=ALeKk02VHWr1AKSA84fON-eEOo6AUnWU0w:1619467439477&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjO7NGr2pzwAhWJOuwKHUKwCrwQ_AUoAXoECAEQAw&biw=1440&bih=775#imgrc=5yDwzEsjDPFRPM

You get a part with the same number on the side:

Reference Images:

Mount spacing on master around 71mm

Mount spacing on servo around 87mm

 

Some other measurements: