Main brake cylinder with reference number 11998529, 6642310, BR529 fits for instance VOLVO BM/VOLVO 4300, VOLVO BM/VOLVO 4400, VOLVO BM/VOLVO 4500. See all compatible models under the Fits to tab.
For machines with separate reservoir, reservoir part. no. 44063. Connections 1/2"-20 UNF and 5/8-18 UNF.