4379-RD21590-0 - Mack Evaporator
76R6140, RD-2-1590-0P, 4379-RD21590-0, ABP N83 307065
VALVE TYPE: O-Ring CORE LENGTH: 8'' CORE HEIGHT: 8'' CORE WIDTH: 2 7/8''
Fits: 1987-1994 Mack Models with Red Dot Heater/AC Unit # R-4120