| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| SKF | BR21 | Direct Cross Interchange | 1 |
| CHAMPION | 6821675 | Indirect Cross Interchange | 1 |
| TIMKEN | SET21 | Indirect Cross Interchange | 1 |
| IHC | 392674R91 | Indirect Cross Interchange | 1 |
| IHC | 3049843R91 | Indirect Cross Interchange | 1 |
| IHC | 3043872R91 | Indirect Cross Interchange | 1 |
| BECK/ARNLEY | 0512303 | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | A21 | Indirect Cross Interchange | 1 |
| DT Components | A21 | Indirect Cross Interchange | 1 |
| PTC | PTA21 | Indirect Cross Interchange | 1 |
| BRITISH LEYLAND | GHB106 | Indirect Cross Interchange | 1 |
| BRITISH LEYLAND | 431570 | Indirect Cross Interchange | 1 |
| TRIUMPH | 58616 | Indirect Cross Interchange | 1 |
| MERCEDES-BENZ | 431570 | Indirect Cross Interchange | 1 |
| JAGUAR | 431570 | Indirect Cross Interchange | 1 |
| FORD | D0RY1201A | Indirect Cross Interchange | 1 |
| CHRYSLER | 9192125 | Indirect Cross Interchange | 1 |
| SEALED POWER | FS21 | Indirect Cross Interchange | 1 |
| ITM | 3804004 | Indirect Cross Interchange | 1 |