- 1004 ENGINE AND POWER UNIT
- 1008 POWER UNIT SUPPORTS
- 1016 CYLINDER HEAD(S)
- 1020 CRANKCASE SUMP AND COVERS
- 1024 CRANKSHAFT AND FLYWHEEL
- 1028 PISTONS AND CONNECTING RODS
- 1032 TIMING SYSTEM
- 1036 TIMING SYSTEM
- 1042 CNG (METHANE) CANISTER AND PIPES
- 1060 DIESEL FUEL INJECTION SYSTEM
- 1064 ENGINE SUPERCHARGING SYSTEM
- 1084 ENGINE LUBRICATION
- 1088 ENGINE COOLING
- 1092 ENGINE COMPONENT MISCELLANEOUS DRIVES