| Item | Part No. | Part Name | Qty | Serial No. |
| 01 | 643 930 40 | Drive sprocket, assy. | ||
| 01 | 643 926 40 | Drive sprocket assy. (oversize) | ||
| 02 | 887 120 40 | Drive sprocket No field repair item | ||
| 02 | 887 115 40 | Drive sprocket (oversize) No field repair item | ||
| 03 | 313 342 40 | Drive sprocket hub No field repair item | ||
| 04 | 429 692 40 | Pin à 57 No field repair item | ||
| 05 | 504 383 98 | Bolt (cold weather design) | ||
| 05 | 308 285 99 | Bolt (standard equipment) | ||
| 06 | 501 124 98 | Nut (cold weather design) | ||
| 06 | 332 369 99 | Nut (standard equipment) | ||
| 07 | 255 056 40 | Washer |