| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| Precision Seals & Bearings | 15121T | Direct Cross Interchange | 1 |
| DT Components | 15121T | Direct Cross Interchange | 1 |
| IHC | 591803C91 | Indirect Cross Interchange | 2 |
| PERFECT CIRCLE | 15121T | Indirect Cross Interchange | 2 |
| CHICAGO RAWHIDE | 15121T | Indirect Cross Interchange | 2 |
| McQuay-Norris | BT15121T | Indirect Cross Interchange | 2 |
| Spicer-Dana | 550175 | Indirect Cross Interchange | 2 |
| RIV | 603422 | Indirect Cross Interchange | 2 |
| SEALED POWER | F15121T | Indirect Cross Interchange | 2 |
| FEDERAL MOGUL | 15121T | Indirect Cross Interchange | 2 |
| SKF | 15121T | Indirect Cross Interchange | 2 |
| AMC | 803907 | Indirect Cross Interchange | 2 |
| AMC | 3129313 | Indirect Cross Interchange | 2 |
| TIMKEN | 15121T | Indirect Cross Interchange | 2 |
| FAG | K15121T | Indirect Cross Interchange | 2 |
| IHC | 871300R91 | Indirect Cross Interchange | 2 |