| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| SKF | 21538 | Direct Cross Interchange | 1 |
| MACK | 145821538 | Indirect Cross Interchange | 1 |
| FIAT | 7044787H | Indirect Cross Interchange | 1 |
| NSN | 5330002825891 | Indirect Cross Interchange | 1 |
| NSN | 25203589073 | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | 50621S | Indirect Cross Interchange | 1 |
| NAVISTAR | CR21538 | Indirect Cross Interchange | 1 |
| TIMKEN | 50621S | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | 50621 | Indirect Cross Interchange | 1 |
| TIMKEN | 50621 | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | 450621 | Indirect Cross Interchange | 1 |
| TIMKEN | 450621 | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | 290621 | Indirect Cross Interchange | 1 |
| TIMKEN | 290621 | Indirect Cross Interchange | 1 |
| CASE | 09391AB | Indirect Cross Interchange | 1 |
| IHC | 401455R91 | Indirect Cross Interchange | 1 |
| CASE | 06010AB | Indirect Cross Interchange | 1 |
| IHC | 401454R91 | Indirect Cross Interchange | 1 |
| CARQUEST | 450621 | Indirect Cross Interchange | 1 |
| IHC | 393453R91 | Indirect Cross Interchange | 1 |
| IHC | 380186R92 | Indirect Cross Interchange | 1 |
| IHC | 380186R91 | Indirect Cross Interchange | 1 |
| IHC | 376464R91 | Indirect Cross Interchange | 1 |
| PACCAR | 21538CHR | Indirect Cross Interchange | 1 |
| ALLIS-CHALMERS | 221818 | Indirect Cross Interchange | 1 |
| ALLIS-CHALMERS | 0629970 | Indirect Cross Interchange | 1 |
| ALLIS-CHALMERS | 02629970 | Indirect Cross Interchange | 1 |
| CLARK | 221818 | Indirect Cross Interchange | 1 |
| RELIANCE | 4048321BJ | Indirect Cross Interchange | 1 |
| FREIGHTLINER | CHR21538 | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | 450621 | Indirect Cross Interchange | 1 |
| DT Components | 450621 | Indirect Cross Interchange | 1 |
| VICTOR | 47015 | Indirect Cross Interchange | 1 |
| TROSTEL | A54531 | Indirect Cross Interchange | 1 |
| L&S Bearing | 7121538 | Indirect Cross Interchange | 1 |
| L&S Bearing | 54531S | Indirect Cross Interchange | 1 |
| L&S Bearing | 54531 | Indirect Cross Interchange | 1 |
| GARLOCK | 211581378 | Indirect Cross Interchange | 1 |
| WHITE MOTOR | 10A16859 | Indirect Cross Interchange | 1 |
| MACK | 21538 | Indirect Cross Interchange | 1 |