Part Type: A/C Receiver Drier. Filter Drier. Steel Filter Drier. Desiccant, Dessicant, Filter Drier, V.I.R. Assembly, VIR Assembly. Style: Steel Filter Drier. Compatible Years: 1981. 1981 Mack F OE No. 74R0606; Filter Driers; Fitting Type: Male Insert O-Ring; Length: 8 In.;.