| PSC | Description
|
| 2910 | Engine Fuel Systems Components, Nonaircraft |
| 2915 | Engine Fuel System Components, Aircraft |
| 2920 | Engine Electrical Systems Components, Nonaircraft |
| 2925 | Engine Electrical Systems Components, Aircraft |
| 2930 | Engine Cooling Systems Components, Nonaircraft |
| 2935 | Engine Cooling Systems Components, Aircraft |
| 2940 | Engine Air and Oil Filters, Nonaircraft |
| 2945 | Engine Air and Oil Filters, Aircraft |
| 2950 | Turbosuperchargers and Components |
| 2990 | Miscellaneous Engine Accessories, Nonaircraft |
| 2995 | Miscellaneous Engine Accessories, Aircraft |