| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| TIMKEN | 512121 | Direct Cross Interchange | 8 |
| AutoZone | 512121 | Direct Cross Interchange | 7 |
| PRECISION AUTOMOTIVE INDUSTRIES | 512121 | Direct Cross Interchange | 7 |
| PARTS PLUS | P512121 | Direct Cross Interchange | 7 |
| RAYBESTOS | 712121 | Direct Cross Interchange | 7 |
| NATIONAL | 512121 | Direct Cross Interchange | 6 |
| DURA | 29512121 | Direct Cross Interchange | 6 |
| SKF | BR930229 | Indirect Cross Interchange | 6 |
| QUALITY-BUILT | WH512121 | Indirect Cross Interchange | 5 |
| FENWICK | WH512121 | Indirect Cross Interchange | 5 |
| AutoZone | WH512121 | Indirect Cross Interchange | 5 |
| PARTS MASTER | PM512121 | Indirect Cross Interchange | 5 |
| CARQUEST | R512121 | Indirect Cross Interchange | 5 |
| MOOG | 512121 | Indirect Cross Interchange | 5 |
| FAG | RW8121 | Indirect Cross Interchange | 4 |
| FEDERAL MOGUL | 512121 | Indirect Cross Interchange | 4 |
| BECK/ARNLEY | 0516071 | Indirect Cross Interchange | 4 |
| Drive Tech America | NT512121 | Indirect Cross Interchange | 4 |
| HONDA | 42200SZ3J51 | Indirect Cross Interchange | 4 |
| HONDA | 42200SZ3J01 | Indirect Cross Interchange | 4 |
| ONESOURCE | 512121 | Indirect Cross Interchange | 4 |
| CHICAGO RAWHIDE | BR930229 | Indirect Cross Interchange | 4 |
| CENTRIC | 40640007E | Indirect Cross Interchange | 1 |
| CENTRIC | 40640007 | Indirect Cross Interchange | 1 |
| OE | 42200SZ5J51 | Indirect Cross Interchange | 1 |
| OE | 42200SZ3J51 | Indirect Cross Interchange | 1 |
| OE | 42200SZ3J01 | Indirect Cross Interchange | 1 |
| BCA | 512121 | Indirect Cross Interchange | 1 |
| FEDERAL | 512121 | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | 512121 | Indirect Cross Interchange | 1 |
| DT Components | 512121 | Indirect Cross Interchange | 1 |