| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| QUALIS | RCS6321S | Direct Cross Interchange | 2 |
| MOOG | 6321 | Direct Cross Interchange | 2 |
| PARTS MASTER | 6321 | Direct Cross Interchange | 1 |
| GM | 9787261 | Indirect Cross Interchange | 3 |
| GM | 3924400 | Indirect Cross Interchange | 3 |
| ACDelco | 45H2017 | Indirect Cross Interchange | 2 |
| TRW | CS6321 | Indirect Cross Interchange | 2 |
| NAPA | 2772026 | Indirect Cross Interchange | 1 |
| MONROE | U6321D | Indirect Cross Interchange | 1 |
| RAYBESTOS | 5891017 | Indirect Cross Interchange | 1 |
| PERFECT CIRCLE | 2772026 | Indirect Cross Interchange | 1 |
| SEALED POWER | 8316321 | Indirect Cross Interchange | 1 |
| Husky Spring | RC6321 | Indirect Cross Interchange | 1 |