| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| BENDIX | MKD421 | Direct Cross Interchange | 1 |
| AIMCO | PM421 | Indirect Cross Interchange | 1 |
| CARQUEST | GD421 | Indirect Cross Interchange | 1 |
| AUTOPART INTERNATIONAL | 69970 | Indirect Cross Interchange | 1 |
| ACDelco | 17D421M | Indirect Cross Interchange | 1 |
| BIG A | 2M7308A | Indirect Cross Interchange | 1 |
| FEDERATED | MD421 | Indirect Cross Interchange | 1 |
| ACDelco | 17D421C | Indirect Cross Interchange | 1 |
| BIG A | 2M7308 | Indirect Cross Interchange | 1 |
| MIDAS | BP1445M | Indirect Cross Interchange | 1 |
| MOTORCRAFT | BR15B | Indirect Cross Interchange | 1 |
| BIG A | 1M7308A | Indirect Cross Interchange | 1 |
| FORD | F4DZ2001C | Indirect Cross Interchange | 1 |
| MOTORCRAFT | BR15 | Indirect Cross Interchange | 1 |
| BIG A | 1M7308 | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001C | Indirect Cross Interchange | 1 |
| BIG A | 1CM7308A | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001B | Indirect Cross Interchange | 1 |
| MOTORCRAFT | BR14B | Indirect Cross Interchange | 1 |
| BIG A | 1CM7308 | Indirect Cross Interchange | 1 |
| FORD | F3DZ2001A | Indirect Cross Interchange | 1 |
| MOTORCRAFT | BR14 | Indirect Cross Interchange | 1 |
| FORD | F0DZ2001A | Indirect Cross Interchange | 1 |
| PARTS MASTER | MKD421S | Indirect Cross Interchange | 1 |
| A.B.S. | 38421 | Indirect Cross Interchange | 1 |
| ROADMATES | MDA421 | Indirect Cross Interchange | 1 |
| BIG A | 17308 | Indirect Cross Interchange | 1 |
| FORD | E9DZ2001A | Indirect Cross Interchange | 1 |
| PARTS MASTER | MKD421AS | Indirect Cross Interchange | 1 |
| MONROE | DX421 | Indirect Cross Interchange | 1 |
| ROADMATES | MD421 | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 2842103 | Indirect Cross Interchange | 1 |
| UNIVERSAL (BRAKE) | MD421H | Indirect Cross Interchange | 1 |
| RAYBESTOS | SSRD421 | Indirect Cross Interchange | 1 |
| OE | F4DZ2001C | Indirect Cross Interchange | 1 |
| BOSCH | BP421 | Indirect Cross Interchange | 1 |
| DAYTON | D421MT | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 2742103 | Indirect Cross Interchange | 1 |
| RAYBESTOS | SGD421M | Indirect Cross Interchange | 1 |
| OE | F3DZ2001C | Indirect Cross Interchange | 1 |
| ATE | AT421 | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4995421 | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 2442104 | Indirect Cross Interchange | 1 |
| UNIVERSAL (BRAKE) | MD421 | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD421M | Indirect Cross Interchange | 1 |
| OE | F3DZ2001B | Indirect Cross Interchange | 1 |
| RAYBESTOS | SSRD421A | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4990421 | Indirect Cross Interchange | 1 |
| AUTOSPECIALTY | 2442101 | Indirect Cross Interchange | 1 |
| UNIVERSAL (BRAKE) | D421 | Indirect Cross Interchange | 1 |
| RAYBESTOS | PGD421AM | Indirect Cross Interchange | 1 |
| OE | F3DZ2001A | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4979421 | Indirect Cross Interchange | 1 |
| BENDIX | MRD421 | Indirect Cross Interchange | 1 |
| SATISFIED BRAKE PRODUCTS | MPD421 | Indirect Cross Interchange | 1 |
| RAYBESTOS | BD421M | Indirect Cross Interchange | 1 |
| OE | F0DZ2001A | Indirect Cross Interchange | 1 |
| PERFORMANCE FRICTION | 4214S | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4975421 | Indirect Cross Interchange | 1 |
| SATISFIED BRAKE PRODUCTS | MD421 | Indirect Cross Interchange | 1 |
| EIS | QMX421A | Indirect Cross Interchange | 1 |
| OE | E9DZ2001A | Indirect Cross Interchange | 1 |
| PERFORMANCE FRICTION | 042125 | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4970421 | Indirect Cross Interchange | 1 |
| SATISFIED BRAKE PRODUCTS | D421 | Indirect Cross Interchange | 1 |
| EIS | QMX421 | Indirect Cross Interchange | 1 |
| NAPA | TS7308 | Indirect Cross Interchange | 1 |
| PERFORMANCE FRICTION | 042120 | Indirect Cross Interchange | 1 |
| BRAKE PRO | 4940421 | Indirect Cross Interchange | 1 |
| SATISFIED BRAKE PRODUCTS | CL421 | Indirect Cross Interchange | 1 |
| EIS | DX421 | Indirect Cross Interchange | 1 |
| NAPA | MS7308CC50 | Indirect Cross Interchange | 1 |
| PERFORMANCE FRICTION | 042110 | Indirect Cross Interchange | 1 |
| ROCKHILL | MD421A | Indirect Cross Interchange | 1 |
| EIS | DM421A | Indirect Cross Interchange | 1 |
| NAPA | MS7308C | Indirect Cross Interchange | 1 |
| R1 Concepts | S0404210 | Indirect Cross Interchange | 1 |
| ROCKHILL | MD421 | Indirect Cross Interchange | 1 |
| NAPA | MAS7308C | Indirect Cross Interchange | 1 |
| R1 Concepts | A0404210 | Indirect Cross Interchange | 1 |
| ROCKHILL | D421 | Indirect Cross Interchange | 1 |
| EIS | DM421 | Indirect Cross Interchange | 1 |
| DASH 4 | MD421 | Indirect Cross Interchange | 1 |
| PARTS PLUS | 200434211 | Indirect Cross Interchange | 1 |
| DURA | BP324MS | Indirect Cross Interchange | 1 |
| NAPA | AE7308CM | Indirect Cross Interchange | 1 |
| Friction Master | SXE421A | Indirect Cross Interchange | 1 |
| WAGNER | SX7308A | Indirect Cross Interchange | 1 |
| MIGHTY | XL421M | Indirect Cross Interchange | 1 |
| Friction Master | SXE421 | Indirect Cross Interchange | 1 |
| WAGNER | SX7308 | Indirect Cross Interchange | 1 |
| MIGHTY | MD421 | Indirect Cross Interchange | 1 |
| WAGNER | SX421 | Indirect Cross Interchange | 1 |
| FMSI | 7308AD421 | Indirect Cross Interchange | 1 |
| AMS | SPQ421L | Indirect Cross Interchange | 1 |
| WAGNER | PD7308R | Indirect Cross Interchange | 1 |
| CENTRIC | 10604210 | Indirect Cross Interchange | 1 |
| ProMax | 11421 | Indirect Cross Interchange | 1 |
| WAGNER | PD421 | Indirect Cross Interchange | 1 |
| CENTRIC | 10404210 | Indirect Cross Interchange | 1 |
| VIPAR | MD421 | Indirect Cross Interchange | 1 |
| WAGNER | MX7308R | Indirect Cross Interchange | 1 |
| CENTRIC | 1040421 | Indirect Cross Interchange | 1 |
| VIPAR | D421 | Indirect Cross Interchange | 1 |
| WAGNER | MX421A | Indirect Cross Interchange | 1 |
| CARQUEST | RMD421A | Indirect Cross Interchange | 1 |
| AutoZone | SGD421M | Indirect Cross Interchange | 1 |
| WAGNER | MX421 | Indirect Cross Interchange | 1 |
| CARQUEST | RMD421 | Indirect Cross Interchange | 1 |
| AutoZone | PGD421M | Indirect Cross Interchange | 1 |
| AIMCO | SPM421S | Indirect Cross Interchange | 1 |
| CARQUEST | RD421 | Indirect Cross Interchange | 1 |
| AutoZone | MKD421 | Indirect Cross Interchange | 1 |
| AIMCO | SPM421AS | Indirect Cross Interchange | 1 |
| CARQUEST | GMD421F | Indirect Cross Interchange | 1 |
| AutoZone | BR15B | Indirect Cross Interchange | 1 |
| AIMCO | SPM421A | Indirect Cross Interchange | 1 |
| CARQUEST | GMD421A | Indirect Cross Interchange | 1 |
| AutoZone | BR14B | Indirect Cross Interchange | 1 |
| AIMCO | SPM421 | Indirect Cross Interchange | 1 |
| CARQUEST | GMD421 | Indirect Cross Interchange | 1 |
| AUTOPART INTERNATIONAL | 86670 | Indirect Cross Interchange | 1 |