| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| OE | F0DZ2001A | Direct Cross Interchange | 5 |
| OE | E9DZ2001A | Direct Cross Interchange | 5 |
| AutoZone | D421CT | Direct Cross Interchange | 4 |
| BENDIX | D421CT | Direct Cross Interchange | 4 |
| Morse Brake | CMX421 | Direct Cross Interchange | 1 |
| AMS | S421L | Direct Cross Interchange | 1 |
| NAPA | UP7222AX | Direct Cross Interchange | 1 |
| OE | F4DZ2001C | Indirect Cross Interchange | 4 |
| OE | F3DZ2001C | Indirect Cross Interchange | 4 |
| OE | F3DZ2001B | Indirect Cross Interchange | 4 |
| OE | F3DZ2001A | Indirect Cross Interchange | 4 |
| FMSI | 7308AD421 | Indirect Cross Interchange | 4 |
| ACDelco | 17D421M | Indirect Cross Interchange | 3 |
| ACDelco | 17D421C | Indirect Cross Interchange | 3 |
| R1 Concepts | A0604210 | Indirect Cross Interchange | 2 |
| AUTO EXTRA | AXMD421 | Indirect Cross Interchange | 2 |
| RAYBESTOS | SGD421M | Indirect Cross Interchange | 2 |
| RAYBESTOS | PGD421QS | Indirect Cross Interchange | 2 |
| RAYBESTOS | PGD421M | Indirect Cross Interchange | 2 |
| NAPA | CMX7222A | Indirect Cross Interchange | 2 |
| FMSI | D4217308A | Indirect Cross Interchange | 2 |
| AutoZone | SGD421M | Indirect Cross Interchange | 2 |
| AutoZone | PGD421M | Indirect Cross Interchange | 2 |
| AutoZone | MKD421 | Indirect Cross Interchange | 2 |
| FORD | F4DZ2001C | Indirect Cross Interchange | 2 |
| FORD | F3DZ2001C | Indirect Cross Interchange | 2 |
| FORD | F3DZ2001B | Indirect Cross Interchange | 2 |
| FORD | F3DZ2001A | Indirect Cross Interchange | 2 |
| FORD | F0DZ2001A | Indirect Cross Interchange | 2 |
| FORD | E9DZ2001A | Indirect Cross Interchange | 2 |
| UNIVERSAL (BRAKE) | CP421 | Indirect Cross Interchange | 2 |
| CENTRIC | 10604210 | Indirect Cross Interchange | 2 |
| CENTRIC | 1060421 | Indirect Cross Interchange | 2 |
| CARQUEST | GMD421F | Indirect Cross Interchange | 2 |
| BENDIX | MKD421 | Indirect Cross Interchange | 2 |
| ACDelco | 17D421MHP | Indirect Cross Interchange | 2 |
| DURA | BP324C | Indirect Cross Interchange | 1 |
| AMS | SPQ421L | Indirect Cross Interchange | 1 |
| DASH 4 | MD421 | Indirect Cross Interchange | 1 |