| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| SKF | 32021X | Direct Cross Interchange | 5 |
| TIMKEN | 32021X | Direct Cross Interchange | 4 |
| Precision Seals & Bearings | 32021X | Direct Cross Interchange | 3 |
| DT Components | 32021X | Direct Cross Interchange | 3 |
| FAG | 32021X | Indirect Cross Interchange | 4 |
| GM | 9442198 | Indirect Cross Interchange | 4 |
| ROCKWELL | A11228B600 | Indirect Cross Interchange | 3 |
| SKF | VKHB2323 | Indirect Cross Interchange | 2 |
| SKF | VKHB2160 | Indirect Cross Interchange | 2 |
| SKF | 32021XQ | Indirect Cross Interchange | 2 |
| KOYO | 32021JR | Indirect Cross Interchange | 2 |
| MERITOR | A11228B600 | Indirect Cross Interchange | 2 |
| NSK | HR32021XJ | Indirect Cross Interchange | 2 |
| CHICAGO RAWHIDE | 32021X | Indirect Cross Interchange | 2 |
| SNR | 32021 | Indirect Cross Interchange | 1 |
| FEDERAL | 32021X | Indirect Cross Interchange | 1 |
| MERCEDES-BENZ | 0039812705 | Indirect Cross Interchange | 1 |
| MERCEDES-BENZ | 0039812505 | Indirect Cross Interchange | 1 |
| MERCEDES-BENZ | 0009814418 | Indirect Cross Interchange | 1 |
| MACK | 145832021X | Indirect Cross Interchange | 1 |
| FIAT | 24903730 | Indirect Cross Interchange | 1 |
| FIAT | 1104922 | Indirect Cross Interchange | 1 |
| UNIVERSAL (BRAKE) | C0202504DD | Indirect Cross Interchange | 1 |
| MERITOR | A1228F1540 | Indirect Cross Interchange | 1 |
| CARQUEST | 32021X | Indirect Cross Interchange | 1 |