| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| AKEBONO | ACT921 | Direct Cross Interchange | 1 |
| RAYBESTOS | PGD921M | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD921C | Indirect Cross Interchange | 1 |
| RAYBESTOS | ATD921C | Indirect Cross Interchange | 1 |
| WAGNER | PD921 | Indirect Cross Interchange | 1 |
| WAGNER | MX921 | Indirect Cross Interchange | 1 |
| ACDelco | 17D921M | Indirect Cross Interchange | 1 |
| ACDelco | 17D921CH | Indirect Cross Interchange | 1 |
| AMS | SPQ921 | Indirect Cross Interchange | 1 |
| GM | 89060375 | Indirect Cross Interchange | 1 |
| GM | 89060358 | Indirect Cross Interchange | 1 |
| GM | 89032286 | Indirect Cross Interchange | 1 |
| GM | 88967250 | Indirect Cross Interchange | 1 |
| GM | 88959954 | Indirect Cross Interchange | 1 |
| GM | 88959947 | Indirect Cross Interchange | 1 |
| GM | 19108021 | Indirect Cross Interchange | 1 |
| BENDIX | MKD921 | Indirect Cross Interchange | 1 |