The cilindro de freno bomba MC39649 has 2 holes of outlet. The thread of the primary one is 1/2-20″ and the thread of the secondary one is 9/16-18″. The interchange Part Numbers are 4746398, 10-2353, M39649, M900570, 39649, 12220, NM2220, 174-669, 20-2220, 13-2353, M-86022, M2220 and etc…
Chevy
Blazer 1994
CK Pickup 1988-1994
Suburban 1989-1994
Dodge
Ram 1994
GMC
CK Pickup 1988-1994
Suburban 1988-1994
Yukon 1994