C Series Engine Diagrams Section E - Engine and System Identification Page E-15 1 M22 X 1.50 intake (air) Left View - C8.3 - Automotive 2 Rear lifting bracket 3 Fuel filter/water separator 4 Fuel transfer pump 5 3/4 X 16-inch UNF tap for magnetic pickup 6 Provisions for oil heater 7 Lubricating oil drain plug 8 Front engine mounting bracket 9 Fuel injection pump 10 Distribution valve 11 High pressure fuel lines 12 1/4-inch NPTF intake (air).