ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-14 1-7 Table 1-2.  ENGINE OPTION CODES - 6 CYLINDER, 6.8 LITER (CONTINUED) ENGINE BASE CODE:  2136F OPTION CODES DESCRIPTION REMARKS 4902 Valve Actuating Mechanisms 5001 Oil Pump 5107 Cylinder Head With Valves 5707 Water Pump Inlet 5901 Oil Cooler 6099 Add-on Auxiliary Drive Pulley Not installed on engine at factory. 6212 Alternator Mounting 6499 Exhaust Elbow Not installed on engine at factory. 6504 Turbocharger 6699 Temperature Switch Not installed on engine at factory. 6799 Electronic Tachometer Sensor Not installed on engine at factory. 6801 Damper 7499 Air Conditioner Compressor Mounting Not installed on engine at factory. 7699 Oil Pressure Switch Not installed on engine at factory. 8604 Fan Pulley 8799 Automatic Belt Tensioner Not installed on engine at factory. 8801 Oil Filter