| Qty. | Part Number | Mfg. | Description | Condition |
| 6 | 2171016-1 | Alco | Bushing, Piston Pin, 251F Engine | New |
| 1 | 2170017 | Alco | Connecting Rod, 251F Engine | New |
| 5 | 22110115 | Alco | Cylinder Liners; 251F; Honey Chrome Plated; Casting Numbers: 821-5722 / 539008 | New |
| 2 | 2211017-1 | Alco | Cylinder Liner, 251F Engine | New |
| 8 | 22200216-4 | Alco | Cylinder Head, with Valves; 4 Valve; Casting Number 822-5739 Typical Number | Rebuilt |
| 2 | 22200216-4 | Alco | Cylinder Head, 251F Engine | New |
| 11 | 22300128 | Alco | Injector, 251F, .350 Nozzle | Rebuilt |
| 1 | 24001422 | Alco | Blower, Crankcase Exhauster, 12-251 | New |
| 8 | 24200416 | Alco | Piston for 12-251F; 11.5:1 Compression; Mexican Hat | New or Rebuilt |
| 3 | 25001071 | Alco | Stud, Cylinder Head; 251F | New |
| 13 | 4320021-1 | Alco | Fuel Pump, 12-251F; Bosch # APF1CQ170T5048E; s/n 930909, 930902, etc. | Rebuilt |
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