| Item | Part No. | Part Name | Qty | Serial No. |
| 21K-32-00110 | TRACK LINK ASS'Y | B20001-B20173 | ||
| 1 | 20Y-32-31120 | LINK,TRACK¤ L.H. | B20001-B20173 | |
| 2 | 20Y-32-31130 | LINK,TRACK¤ R.H. | B20001-B20173 | |
| 3 | 20Y-32-11240 | SEAL,REGULAR | B20001-B20173 | |
| 4 | 20Y-32-11171 | BUSHING¤ MASTER,MASTER | B20001-B20173 | |
| 5 | 20Y-32-11141 | BUSHING¤ REGULAR,REGULAR | B20001-B20173 | |
| 6 | 20Y-32-31150 | PIN,REGULAR | B20001-B20173 | |
| 7 | 20Y-32-11260 | SEAL,MASTER | B20001-B20173 | |
| 8 | 20Y-32-31190 | PIN,MASTER | B20001-B20173 |