AIR CONDITIONING HOSE ASSEMBLYLate 77 . 1978 L-48 1976 early used long A6 compressor. 1976 late used short R4 compressor. 1977 early used a POA valve. 1977 late used a drier. MakeCHEV ModelCORVETTE Year1977-1978 Item#HAC556 Instructions / Core Return FormClick Here Price$199.95EACH Core Charge$0.00 QtyAdd