| PSC | Description |
|---|---|
| 2910 | Engine fuel sys components nonair |
| 2915 | Engine fuel system components air |
| 2920 | Engine elect sys comps nonaircraft |
| 2925 | Engine elect sys comps - aircraft |
| 2930 | Engine cooling sys comps - nonair |
| 2935 | Engine cooling sys components - air |
| 2940 | Engine air & oil filters - nonair |
| 2945 | Engine air & oil filters - air |
| 2950 | Turbosuperchargers |
| 2990 | Misc engine accessories - nonair |
| 2995 | Misc engine accessories - aircraft |