| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| PACCAR | DK4423SKF | Direct Cross Interchange | 1 |
| ROCKWELL | 4423 | Direct Cross Interchange | 1 |
| SKF | DK4423 | Indirect Cross Interchange | 2 |
| Precision Seals & Bearings | DRK4423 | Indirect Cross Interchange | 1 |
| DT Components | DRK4423 | Indirect Cross Interchange | 1 |