| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| ROULUNDS RUBBER | 4K0850ELAST | Direct Cross Interchange | 3 |
| CONTITECH | 4PK850ELAST | Direct Cross Interchange | 2 |
| OPTIBELT | 4EPK850 | Indirect Cross Interchange | 2 |
| QUINTON HAZELL | QBR4850E | Indirect Cross Interchange | 2 |
| BMW | 7793608 | Indirect Cross Interchange | 2 |
| BMW | 64557793608 | Indirect Cross Interchange | 2 |
| SKF | VKMV4SK830 | Indirect Cross Interchange | 2 |
| GATES | 4PK830SF | Indirect Cross Interchange | 2 |
| MAGNETI MARELLI | 340411050850 | Indirect Cross Interchange | 1 |
| METZGER | 4PK850 | Indirect Cross Interchange | 1 |
| HUTCHINSON | 830SK4 | Indirect Cross Interchange | 1 |
| GOODYEAR | 4PKS0830 | Indirect Cross Interchange | 1 |