I think I have solved the puzzle of the 'Ford' Master cylinder part number.
After double checking and then realising my BMW master cylinder is actually a dual diameter bore size, I decided to go for a 22mm cylinder.
Based on a hunch that the Marlin supplied M/C it was off a Ford Sierra and Mike's info that it is a Bendix OE, I ordered a BMC4052 from Brakes International.
It arrived today and has the magic numbers 383059 on the side.
It's just like Jason's but with the outlets on the engine side.
It is manufactured by an Italian firm called Cifam. (
www.cifam.it)
The logo on the M/c is Ci. It is Cifam part number 202-099.
The Cifam website and catalogue has lots of useful info with pictures, 'where else used' and other suppliers equivalent part numbers.
It is brand new in a sealed box and was delivered to my door about 42 hours after I placed the order!
Manufacturers packing date is 08/07/11 so nice fresh stock.
Total price was £57.96 inc. VAT and courier delivery.
Thanks to Robin for finding
www.brakesint.co.uk
I'll be checking all the relevant measurements and post some pictures over the weekend.
...peter
PLEASE READ POST #525 below before ordering this M/C. THIS PART NUMBER MAY ONLY BE SUITABLE FOR CARS WITH DRUMS AT THE BACK