He was 87 and is survived by three sons and a daughter, MCA's joint secretary Nitin Dalal informed.
"He was a former treasurer, joint secretary and then was also a mere managing committee member of MCA," Dalal said.
Kosambia was part of the Bal Mahaddalkar group which swept the MCA elections in the late 1980s and has still a strong presence in the association though its leader had passed away.