143130C5 Complete Return Line Fits Case-IH Tractor Models 3488 3688 5088 5288One New Aftermarket Replacement AC Compressor Return Line Fits Case International Harvester 88 Series and 2+2 Tractors This aftermarket replacement AC compressor return line (suction return line) runs from the evaporator outlet at the cab post back to the air conditioning compressor. It is a direct fit replacement for the factory hose and fitting assembly used in the cab air conditioning system on Fits Case IH (Fits International Harvester) 88 Series