51854504 (CFC328F.02) – used gearbox control unit
On this page you can buy an original Magneti Marelli control unit for the MTA (Dualogic) automated manual gearbox. It is a used unit, bench-tested before shipping. Key numbers: 51854504 and CFC328F.02.
Does it need programming?
No – control unit 51854504 does not need programming. The numbers on the label just have to match your unit.
Other versions in stock
Similar control units with different numbers – the number on your label decides: 51856403 / CFC328F.02, 51840322 / CFC328F.02, 55250921 / CFC328F.02, 51864449 / CFC328F.05, 55271242 / CFC328F.13.
Numbers to compare with your unit
| Label | Number (different formats) |
| Fiat number | 51854504 |
| Magneti Marelli number | 62000.124.06 / 6200012406 |
| Control unit type | CFC328F.02 / CFC328F02 |
| Label code | FHA14NHE |
| Application code | NUOVA 500 1242-8V C514MTA |
How does a gearbox control unit fault show?
A faulty gearbox control unit can cause these symptoms:
- the gearbox goes into limp mode,
- the gearbox will not engage a gear or stays in neutral (N),
- jerking when pulling away or changing gear,
- no communication with the gearbox control unit in diagnostics.
Before ordering, have the gearbox diagnosed – the clutch or gear-shift actuator sometimes causes similar symptoms.
Which cars does 51854504 fit?
We have confirmed this number in: Fiat 500 1.2 8V. This is not a complete list – if your car is not on it, the unit may still fit, and a listed model does not guarantee compatibility. The label decides: numbers 51854504 and CFC328F.02 must match your unit. A different ending of the number means a different version.
Warranty
The warranty on this control unit is 6 months. You will find other gearbox control units in Fiat Transmission Control Units (TCU). Questions about choosing the number? Contact us.
Frequently asked questions about control unit 51854504
| Question |
Answer |
| How does an automated manual gearbox differ from an automatic? |
It is a conventional gearbox with a clutch – gear changes and the clutch are operated by electronically controlled actuators. It has no torque converter like an automatic. |
| Does the control unit need programming? |
No, the control unit does not need programming. |
| Which cars use 51854504? |
We have confirmed it in: Fiat 500 1.2 8V. The label number still decides. |
| How do I know that 51854504 will fit? |
The label of your unit must show the same numbers: 51854504 and CFC328F.02, including the ending. |