| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| GOODYEAR | A21 | Direct Cross Interchange | 2 |
| GATES | A21 | Indirect Cross Interchange | 1 |
| GATES | 65021 | Indirect Cross Interchange | 1 |
| BANDO | B3220 | Indirect Cross Interchange | 1 |
| BANDO | A21 | Indirect Cross Interchange | 1 |
| CUMMINS | 3809121 | Indirect Cross Interchange | 1 |
| GOODYEAR | 76021 | Indirect Cross Interchange | 1 |
| GOODYEAR | 41061 | Indirect Cross Interchange | 1 |
| OPTIBELT | A21 | Indirect Cross Interchange | 1 |
| TRANSICOLD | 500006200 | Indirect Cross Interchange | 1 |
| DUNLOP | A21 | Indirect Cross Interchange | 1 |
| FENNER | A570 | Indirect Cross Interchange | 1 |
| FENNER | A21 | Indirect Cross Interchange | 1 |
| FENNER | 240A0057 | Indirect Cross Interchange | 1 |
| Continental | 6535054 | Indirect Cross Interchange | 1 |
| PIX Belts | A21 | Indirect Cross Interchange | 1 |
| THERMOID | A21 | Indirect Cross Interchange | 1 |
| GOODRICH | A21 | Indirect Cross Interchange | 1 |
| UNIROYAL | A21 | Indirect Cross Interchange | 1 |
| JASON | A21 | Indirect Cross Interchange | 1 |
| Durkee-Atwood | A21 | Indirect Cross Interchange | 1 |
| Industry Standard | A21 | Indirect Cross Interchange | 1 |
| Industry Standard | A021 | Indirect Cross Interchange | 1 |
| Metric Standard | SPA570 | Indirect Cross Interchange | 1 |
| Metric Standard | 13X570 | Indirect Cross Interchange | 1 |
| Metric Standard | 13C585 | Indirect Cross Interchange | 1 |
| Metric Standard | 12X570 | Indirect Cross Interchange | 1 |
| OE | 4642C96H51 | Indirect Cross Interchange | 1 |
| NSN | 3030001608280 | Indirect Cross Interchange | 1 |
| DAYCO | AP21 | Indirect Cross Interchange | 1 |
| DAYCO | A21 | Indirect Cross Interchange | 1 |
| DAYCO | 434879 | Indirect Cross Interchange | 1 |