| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| WD EXPRESS | 52004210504 | Direct Cross Interchange | 5 |
| INTERAMERICAN MOTOR | D9421SC | Direct Cross Interchange | 5 |
| FMSI | 7308AD421 | Direct Cross Interchange | 4 |
| WAGNER | ZX421A | Direct Cross Interchange | 3 |
| WAGNER | ZX421 | Direct Cross Interchange | 3 |
| WD EXPRESS | 52004210503 | Indirect Cross Interchange | 3 |
| WD EXPRESS | 52004210462 | Indirect Cross Interchange | 3 |
| INTERAMERICAN MOTOR | D9421SM | Indirect Cross Interchange | 3 |
| INTERAMERICAN MOTOR | D9421SHD | Indirect Cross Interchange | 3 |
| INTERAMERICAN MOTOR | BP421 | Indirect Cross Interchange | 3 |
| WD EXPRESS | 52004210505 | Indirect Cross Interchange | 3 |
| IMC | 52004210505 | Indirect Cross Interchange | 3 |
| BENDIX | MRD421 | Indirect Cross Interchange | 3 |
| IMC | 52004210503 | Indirect Cross Interchange | 3 |
| IMC | 52004210462 | Indirect Cross Interchange | 3 |
| RAYBESTOS | RRD421M | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD421QS | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD421M | Indirect Cross Interchange | 1 |
| RAYBESTOS | BD421M | Indirect Cross Interchange | 1 |
| DURA | BP421MS | Indirect Cross Interchange | 1 |
| AUTO EXTRA | AXMD421 | Indirect Cross Interchange | 1 |
| AMS | DMX421S | Indirect Cross Interchange | 1 |
| AMS | DMX421L | Indirect Cross Interchange | 1 |
| AutoZone | SGD421M | Indirect Cross Interchange | 1 |
| AutoZone | PGD421M | Indirect Cross Interchange | 1 |
| AutoZone | MKD421 | Indirect Cross Interchange | 1 |
| AutoZone | D421CT | Indirect Cross Interchange | 1 |
| AUTOPART INTERNATIONAL | 69970 | Indirect Cross Interchange | 1 |
| AUTOPART INTERNATIONAL | 69906 | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001C | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001B | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001A | 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 | F0DZ2001A | Indirect Cross Interchange | 1 |
| FORD | E9DZ2001B | Indirect Cross Interchange | 1 |
| FORD | E9DZ2001A | Indirect Cross Interchange | 1 |
| OE | F4DZ2001C | Indirect Cross Interchange | 1 |
| FMSI | D4217308A | Indirect Cross Interchange | 1 |
| OE | F3DZ2001C | Indirect Cross Interchange | 1 |
| ACDelco | 17D421MHP | Indirect Cross Interchange | 1 |
| OE | F3DZ2001B | Indirect Cross Interchange | 1 |
| ACDelco | 17D421M | Indirect Cross Interchange | 1 |
| OE | F3DZ2001A | Indirect Cross Interchange | 1 |
| ACDelco | 17D421C | Indirect Cross Interchange | 1 |
| OE | F0DZ2001A | Indirect Cross Interchange | 1 |
| CARQUEST | GMD421F | Indirect Cross Interchange | 1 |
| OE | E9DZ2001A | Indirect Cross Interchange | 1 |
| BENDIX | MKD421 | Indirect Cross Interchange | 1 |
| BENDIX | D421CT | Indirect Cross Interchange | 1 |
| RAYBESTOS | SSRD421 | Indirect Cross Interchange | 1 |
| RAYBESTOS | SGD421M | Indirect Cross Interchange | 1 |