#2 fm ENG #180117Y0140PT205. 2.0 LITER GAS. Air hose. MAIN. A pipe that transfers compressed air to from the turbo or super charger to the intercooler. Hoses carries permanent coolant, or antifreeze, throughout the engine, heater, and radiator. By - Passenger. Charge Air Cooler Pipe. Engine Coolant. Intercooler Pipe.