| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| DAYCO | D660 | Direct Cross Interchange | 21 |
| GATES | DR660 | Direct Cross Interchange | 21 |
| GATES | D660 | Direct Cross Interchange | 21 |
| GATES | 68660 | Direct Cross Interchange | 21 |
| CUMMINS | 3809373 | Direct Cross Interchange | 21 |
| GOODYEAR | D660 | Direct Cross Interchange | 21 |
| Gardner-Denver | 13C113 | Direct Cross Interchange | 21 |
| PIX Belts | D660 | Direct Cross Interchange | 21 |
| THERMOID | D660 | Direct Cross Interchange | 21 |
| GOODRICH | D660 | Direct Cross Interchange | 21 |
| UNIROYAL | D660 | Direct Cross Interchange | 21 |
| Durkee-Atwood | D660 | Direct Cross Interchange | 21 |
| Industry Standard | D660 | Direct Cross Interchange | 21 |
| Metric Standard | 32C16870 | Direct Cross Interchange | 21 |
| Metric Standard | 32C16830 | Direct Cross Interchange | 21 |
| OE | 0703730 | Direct Cross Interchange | 21 |
| NSN | MS39258D660 | Direct Cross Interchange | 21 |
| NSN | 30305290281 | Direct Cross Interchange | 21 |
| DAYCO | DP660 | Direct Cross Interchange | 21 |