| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| TIMKEN | MU1921V | Direct Cross Interchange | 3 |
| Precision Seals & Bearings | MU1921V | Direct Cross Interchange | 2 |
| DT Components | MU1921V | Direct Cross Interchange | 2 |
| SKF | MU1921X | Indirect Cross Interchange | 3 |
| ROLLWAY | U1921 | Indirect Cross Interchange | 2 |