| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| BENDIX | R621L | Direct Cross Interchange | 3 |
| BENDIX | 621L | Direct Cross Interchange | 3 |
| ROADHOUSE | 406900 | Indirect Cross Interchange | 2 |
| RAYBESTOS | 621PG | Indirect Cross Interchange | 2 |
| NK | 2799346 | Indirect Cross Interchange | 2 |
| WAGNER | PAB621 | Indirect Cross Interchange | 2 |
| TRISCAN | 810010346 | Indirect Cross Interchange | 2 |
| E.T.F. | 090254 | Indirect Cross Interchange | 2 |
| fri.tech. | 1079176 | Indirect Cross Interchange | 2 |
| KAGER | 340491 | Indirect Cross Interchange | 2 |
| FMSI | S6211424 | Indirect Cross Interchange | 2 |
| FMSI | S621 | Indirect Cross Interchange | 2 |
| FMSI | 1424S621 | Indirect Cross Interchange | 2 |
| CENTRIC | 11106210 | Indirect Cross Interchange | 2 |
| CENTRIC | 11006210 | Indirect Cross Interchange | 2 |
| QUINTON HAZELL | BS624 | Indirect Cross Interchange | 2 |
| PEUGEOT | 424154 | Indirect Cross Interchange | 2 |
| PEUGEOT | 424151 | Indirect Cross Interchange | 2 |
| CITROEN | 424151 | Indirect Cross Interchange | 2 |
| CITROEN | 423833 | Indirect Cross Interchange | 2 |
| DELPHI | LS1280 | Indirect Cross Interchange | 2 |
| TRW | GS8108 | Indirect Cross Interchange | 2 |
| PEX | 6231 | Indirect Cross Interchange | 2 |
| FERODO | FSB159 | Indirect Cross Interchange | 2 |
| AMS | 621 | Indirect Cross Interchange | 2 |
| LPR | 02840 | Indirect Cross Interchange | 2 |
| A.B.S. | 8315 | Indirect Cross Interchange | 2 |
| SBS | 18492799346 | Indirect Cross Interchange | 2 |
| BOSCH | BS635 | Indirect Cross Interchange | 2 |
| BOSCH | 0986487403 | Indirect Cross Interchange | 2 |
| ATE | 650198 | Indirect Cross Interchange | 2 |
| ATE | 03013701982 | Indirect Cross Interchange | 2 |
| HP | 1258 | Indirect Cross Interchange | 2 |
| REMSA | 406900 | Indirect Cross Interchange | 2 |
| MIGHTY | 621L | Indirect Cross Interchange | 1 |
| ITM | 2110621 | Indirect Cross Interchange | 1 |
| LUCAS ELECTRICAL | BS621G | Indirect Cross Interchange | 1 |
| CARQUEST | GS621 | Indirect Cross Interchange | 1 |
| LUCAS ELECTRICAL | BS621 | Indirect Cross Interchange | 1 |
| CARQUEST | BS621 | Indirect Cross Interchange | 1 |
| BECK/ARNLEY | 0812925 | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 3062111 | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 3062101 | Indirect Cross Interchange | 1 |
| MIDAS | BS1498 | Indirect Cross Interchange | 1 |
| NAPA | B621 | Indirect Cross Interchange | 1 |
| NAPA | AE621 | Indirect Cross Interchange | 1 |
| MIGHTY | 621LEX | Indirect Cross Interchange | 1 |