2G0401 A/C Expansion Valve Fits Caterpillar Fits CAT 140G 416 943 953 D250D D300One New Aftermarket Replacement A C Expansion Valve Fits Caterpillar (Fits CAT) Heavy Equipment This aftermarket replacement A C expansion valve Fits Caterpillar (Fits CAT) construction and earthmoving equipment. The expansion valve controls the amount of refrigerant released into the evaporator, regulating superheat within the cab HVAC system for operator comfort. This is an externally equalized peanut style valve rated at 1 1 2 ton with a #6 male O