| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| RAYBESTOS | PGD1421C | Direct Cross Interchange | 1 |
| BENDIX | D1421CT | Direct Cross Interchange | 1 |
| RAYBESTOS | ATD1421C | Indirect Cross Interchange | 2 |
| AutoZone | ATD1421C | Indirect Cross Interchange | 1 |
| FEDERATED | D1421C | Indirect Cross Interchange | 1 |
| SAAB | 13237753 | Indirect Cross Interchange | 1 |
| SAAB | 13237750 | Indirect Cross Interchange | 1 |
| GM | 20963796 | Indirect Cross Interchange | 1 |
| GM | 20877794 | Indirect Cross Interchange | 1 |
| GM | 13237753 | Indirect Cross Interchange | 1 |
| PARTS PLUS | PCP1421 | Indirect Cross Interchange | 1 |
| NAPA | CMX8536 | Indirect Cross Interchange | 1 |
| NAPA | AEC8536 | Indirect Cross Interchange | 1 |
| MIGHTY | XL1421C | Indirect Cross Interchange | 1 |
| CARQUEST | BCD1421 | Indirect Cross Interchange | 1 |
| BENDIX | D1421 | Indirect Cross Interchange | 1 |
| MONROE | CX1421 | Indirect Cross Interchange | 1 |
| ATE | AT1421 | Indirect Cross Interchange | 1 |
| WAGNER | QC1421 | Indirect Cross Interchange | 1 |
| ACDelco | 17D1421CH | Indirect Cross Interchange | 1 |
| TRW | TPC1421 | Indirect Cross Interchange | 1 |
| NEWTEK | D1421 | Indirect Cross Interchange | 1 |
| AUTO EXTRA | AXCD1421 | Indirect Cross Interchange | 1 |
| AutoZone | PGD1421C | Indirect Cross Interchange | 1 |
| AutoZone | D1421CT | Indirect Cross Interchange | 1 |