| Item | Part No. | Part Name | Qty | Serial No. |
| 01 | 621 704 40 | Bottom roller assy. | ||
| 01 | 634 726 40 | Bottom roller assy. (cold weather design) | ||
| 02 | 764 865 73 | Roller with bush and plug | ||
| 03 | 764 866 73 | Bush | ||
| 04 | 764 867 73 | Roller | ||
| 06 | 313 407 99 | Plug | ||
| 07 | 511 670 98 | O-ring | ||
| 07 | 765 976 73 | O-ring (cold weather design) | ||
| 08 | 764 868 73 | Axle | ||
| 09 | 145 800 40 | Lifetime seal | ||
| 09 | 696 525 73 | Lifetime seal (cold weather design) | ||
| 10 | 764 869 73 | End piece | ||
| 11 | 511 669 98 | Pin |