C Series Engine Diagrams Section E - Engine and System Identification Page E-17 1 Water outlet connection Right View - C8.3 - Automotive 2 Lubricating oil temperature thermostat 3 Lubricating oil pressure (after filter) 4 Lubricating oil pressure (before filter) 5 Lubricating oil cooler 6 1/2-inch NPFT (coolant) 7 Coolant inlet 8 Lubricating oil temperature sensor 9 Lubricating oil filter 10 Turbocharger oil drain 11 Provision for cab heater 12 Provision for coolant heater 13 Turbocharger exhaust outlet 14 Turbocharger wastegate actuator 15 Turbocharger air inlet.