Aluminum Master Cylinders With OEM 19209219 MC39849 For Chevy LLV

The replacement numbers of the maste cylinder brake are 18014308, 18029962，19209219, and other intercharge numbers are MC39849, M900667, 130.66003, R11581. The piston iameter is 0.94″(23.876mm). With the two outlet ports, the thread size of the primary one is 1/2-20″ and the secondary one is 9/16-18″. It fits for Chevy LLV 1987-1995