| 4281091 | Gear casing (also DLW 10211031) | Alco / MLW | | |
| 4281101 | Idler shaft (also DLW 10141066) | Alco / MLW | | |
| 4281102 | Fan shaft (also DLW 10211810) | Alco / MLW | | |
| 4281103 | Spline shaft (also DLW 10211809) | Alco / MLW | | |
| 4281111 | Spacer, idler shaft (also DLW 10230907) | Alco / MLW | | |
| 4281112 | Spacer, on shaft, impeller to bearing (also DLW 10230919) | Alco / MLW | | |
| 42811131 | Retainer, oil seal | Alco / MLW | | |
| 4281121 | Cover, idler shaft, fan end (also DLW 10192025) | Alco / MLW | | |
| 4281131 | Seal retainer (also DLW 10193212) | Alco / MLW | | |
| 4281141 | Housing and impeller | Alco / MLW | | |
| 4281142 | Fan box | Alco / MLW | | |
| 4281181 | Bearing (blower end with trilobe) | Alco / MLW | | |
| 4281201 | Oil inlet fitting (also DLW 10220409) | Alco / MLW | | |
| 4281211 | Bushing, fan shaft, engine end (also DLW 10211457) | Alco / MLW | | |
| 4281221 | Sleeve (also DLW 10130354) | Alco / MLW | | |
| 4281231 | Hub (also DLW 10140967) | Alco / MLW | | |