| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| AS | 67104 | Direct Cross Interchange | 8 |
| BM CATALYSTS | BM91536H | Direct Cross Interchange | 5 |
| MAGNAFLOW | 74301 | Direct Cross Interchange | 4 |
| KLARIUS | 322737 | Direct Cross Interchange | 3 |
| BM CATALYSTS | BM91536 | Direct Cross Interchange | 3 |
| QUINTON HAZELL | 322737 | Direct Cross Interchange | 3 |
| MAGNAFLOW | K594 | Direct Cross Interchange | 2 |
| IMASAF | 164733 | Direct Cross Interchange | 2 |
| LANCIA | 73502272 | Indirect Cross Interchange | 8 |
| ALFAROME/FIAT/LANCI | 73502272 | Indirect Cross Interchange | 2 |
| FIAT / LANCIA | 73502272 | Indirect Cross Interchange | 2 |
| AUTOBIANCHI | 73502272 | Indirect Cross Interchange | 1 |
| AUTOBIANCHI | 46779939 | Indirect Cross Interchange | 1 |
| ROSI | 322737 | Indirect Cross Interchange | 1 |
| LANCIA | 46779939 | Indirect Cross Interchange | 1 |