| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| CARQUEST | D721 | Direct Cross Interchange | 3 |
| NEWTEK | D721 | Direct Cross Interchange | 2 |
| FEDERATED | MD721 | Indirect Cross Interchange | 2 |
| FEDERATED | D721 | Indirect Cross Interchange | 2 |
| AUTO EXTRA | AXOD721 | Indirect Cross Interchange | 2 |
| AUTO EXTRA | AXMD721 | Indirect Cross Interchange | 2 |
| AUTO EXTRA | AXCD721 | Indirect Cross Interchange | 2 |
| ACDelco | 17D721 | Indirect Cross Interchange | 1 |