You can buy new master cylinders that are repops of the original as well as repair kits.

http://www.americanclassic.com/asp/...&iyear=1942&ytype=to&exyear=

https://www.chevsofthe40s.com/Shop/...ck&cat=180T&Catalog=RO&go=go

http://www.classicpartsusa.com/category/1942_Truck_Parts_Brake_Master_Cylinders

https://www.rockauto.com/catalog/x,carcode,1486212,parttype,1836,a,www.google.com%2BSearch%2Bfor%2BCHEVROLET

https://www.rockauto.com/catalog/x,carcode,1486212,parttype,1840,a,www.google.com%2BSearch%2Bfor%2BCHEVROLET


Paul Schmehl CI 6
geek@stovebolt.com
Stovebolt Staff: Geek