| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| WAGNER | SX421 | Direct Cross Interchange | 1 |
| RAYBESTOS | PGD421M | Indirect Cross Interchange | 1 |
| RAYBESTOS | BD421M | Indirect Cross Interchange | 1 |
| EIS | MX421 | Indirect Cross Interchange | 1 |
| ACDelco | 17D421MHP | Indirect Cross Interchange | 1 |
| ACDelco | 17D421M | Indirect Cross Interchange | 1 |
| ACDelco | 17D421C | Indirect Cross Interchange | 1 |
| ACDelco | 17D421AMHP | Indirect Cross Interchange | 1 |
| ACDelco | 17D421AM | Indirect Cross Interchange | 1 |
| AUTO EXTRA | AXMD421 | Indirect Cross Interchange | 1 |
| AMS | TXD421L | Indirect Cross Interchange | 1 |
| AutoZone | SGD421M | Indirect Cross Interchange | 1 |
| AutoZone | PGD421M | Indirect Cross Interchange | 1 |
| FORD | F2SZ2001A | Indirect Cross Interchange | 1 |
| FORD | F2DZ2001A | Indirect Cross Interchange | 1 |
| FORD | F20Y2001A | Indirect Cross Interchange | 1 |
| FORD | F10Y2001A | Indirect Cross Interchange | 1 |
| FORD | E9DZ2001B | Indirect Cross Interchange | 1 |
| NAPA | UP7308M | Indirect Cross Interchange | 1 |
| NAPA | SD7222AM | Indirect Cross Interchange | 1 |
| CARQUEST | GMD421F | Indirect Cross Interchange | 1 |
| BENDIX | MKD421FM | Indirect Cross Interchange | 1 |
| BENDIX | MKD421 | Indirect Cross Interchange | 1 |
| BENDIX | MKD324FM | Indirect Cross Interchange | 1 |
| RAYBESTOS | SSRD421 | Indirect Cross Interchange | 1 |
| RAYBESTOS | SSRD324 | Indirect Cross Interchange | 1 |
| RAYBESTOS | SGD421M | Indirect Cross Interchange | 1 |
| RAYBESTOS | RRD421M | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD421QS | Indirect Cross Interchange | 1 |