#2. 2.0 LITER. CENTER. PartQualifier: #2. Tube. A line that carries coolant from the engine through the turbocharger and back into the engine. Hoses carries permanent coolant, or antifreeze, throughout the engine, heater, and radiator. Part has related component that cannot be reused/reinstalled; o-ring. Engine Coolant Hose. Hose AND AMPLIFIER; tube ASSEMBLY. Outlet hose. Return line. Turbocharger Coolant Line. Water inlet pipe. Water pipe.