| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| TIMKEN | 8521S | Direct Cross Interchange | 5 |
| SKF | 18510 | Direct Cross Interchange | 4 |
| Precision Seals & Bearings | 8521S | Direct Cross Interchange | 3 |
| DT Components | 8521S | Direct Cross Interchange | 3 |
| VICTOR | 47485 | Indirect Cross Interchange | 3 |
| ACDelco | 29077 | Indirect Cross Interchange | 3 |
| FEDERAL MOGUL | 8521S | Indirect Cross Interchange | 3 |
| CHICAGO RAWHIDE | 18510 | Indirect Cross Interchange | 2 |
| Dichtomatik | 18265OUCY | Indirect Cross Interchange | 2 |
| CR | 18510 | Indirect Cross Interchange | 1 |
| MACK | 18510 | Indirect Cross Interchange | 1 |
| MACK | 145818510 | Indirect Cross Interchange | 1 |
| FORD | 965818510 | Indirect Cross Interchange | 1 |
| SEALED POWER | N18510 | Indirect Cross Interchange | 1 |
| NAPA | 47485 | Indirect Cross Interchange | 1 |
| NATIONAL | 8521S | Indirect Cross Interchange | 1 |
| NATIONAL | 4A8521S | Indirect Cross Interchange | 1 |
| NAVISTAR | CR18510 | Indirect Cross Interchange | 1 |
| CARQUEST | 8521S | Indirect Cross Interchange | 1 |
| PACCAR | 18510CHR | Indirect Cross Interchange | 1 |
| Delco Moraine | 29077 | Indirect Cross Interchange | 1 |
| TRANSCOM | 18265OUCY | Indirect Cross Interchange | 1 |
| SKF Automotive | OS18510 | Indirect Cross Interchange | 1 |
| FREIGHTLNR | CHR18510 | Indirect Cross Interchange | 1 |
| MASSEY FERGUSON | 833342M1 | Indirect Cross Interchange | 1 |
| FREIGHTLINER | CHR18510 | Indirect Cross Interchange | 1 |
| CR | 533227 | Indirect Cross Interchange | 1 |