Alco Model 251Engine Spares
| Qty. | Part Number | Mfg. | Description | Condition |
| 24 | 21410166 | Alco | Main Bearing, Shell | New |
| 6 | 2171016-1 | Alco | Bushing, Piston Pin, 251F Engine | New |
| 20 | 2161332 | Alco | Camshaft Bushing | New |
| 16 | 2170017 | Alco | Connecting Rod | Rebuilt |
| 0 | 22110115 | Alco | Cylinder Liners; 251F; Honey Chrome Plated; Casting Numbers: 821-5722 / 539008 – | New |
| 20 | 2211017-1 | Alco | Cylinder Liner; Unplated | Rebuilt |
| 2 | 2211017-1 | Alco | Cylinder Liner, 251F Engine | New |
| 0 | 22200216-4 | Alco | Cylinder Head, with Valves; 4 Valve; Casting Number 822-5739 Typical Number | Rebuilt |
| 12 | 22200226 | Alco | Cylinder Head, 251 Engine, Non Plus | Rebuilt |
| 64 | 22211817 | Alco | Insert, valve seat | New |
| 12 | 22300124 | Alco | Injector, | Rebuilt |
| 11 | 22300128 | Alco | Injector, 251F, .350 Nozzle | Rebuilt |
| 32 | 22311210 | Alco | Valve, Exhaust | New |
| 32 | 22311211 | Alco | Valve | New |
| 1 | 22500120-2 | Alco | Water Pump, Jacket Water | New |
| 76 | 2231136 | Alco | Guide | New |
| 1 | 22601516 | Alco | Model 131 Turbo | Rebuilt |
| 20 | 2240014-2 | Alco | Push Rod | New |
| 9 | 2240211-1 | Alco | Rocker Arm | |
| 18 | 2321368 | Alco | Guide | New |
| 2 | 22500120-2 | Alco | Water Pump, with Drive Gear | |
| 2 | 2251141 | Alco | Impeller, Water Pump | |
| 2 | 2251142-2 | Alco | Impeller, Water Pump | |
| 4 | 2351083-2 | Alco | Drive Gear, Lube Oil Pump | |
| 1 | 23900143 | Alco | Lube Oil Pump, With Relief Valvw | Rebuilt |
| 0 | 24200416 | Alco | Piston 251F; 11.5:1 Compression; Mexican Hat | New or Rebuilt |
| 12 | 2420048 | Alco | Piston assembly, with piston pin | Rebuilt |
| 6 | 2421022-2 | Alco | Piston Ring | |
| 90 | 2461082-1 | Alco | Spring, Valve | |
| 13 | 4320021-1 | Alco | Fuel Pump, 251F; Bosch # APF1CQ170T5048E; s/n 930909, 930902, etc. | Rebuilt |
| 12 | 840-5734 | Alco | Water Jumper |
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