C8.3 Industrial Engine Diagrams Section E - Engine System Identification Page E-7 Engine Diagrams Engine Views Marine Applications Port View, C 8.3, Six-Cylinder Sea Water Aftercooled 450C 1 Air cleaner 2 Inlet air crossover tube 3 Aftercooler (sea water-type) 4 Water (coolant) filter 5 Flywheel housing 6 Air heater control solenoids 7 Engine oil drain, rear 8 Dipstick (engine oil) port-side standard 9 Oil pan heater location (if equipped) 10 Fuel cooler 11 Fuel filter (standard) 12 Oil pan 13 Sea water pump inlet (rotatable) 14 Belt guard 15 Remote mounted oil filter (optional) 16 Fuel pump 17 Expansion tank 18 Coolant fill 19 Stop lever 20 Air heater 21 Throttle lever 22 Zinc plugs (aftercooler).