51864449 (CFC328F.05) – 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: 51864449 and CFC328F.05.
Numbers to compare with your unit
| Label | Number (different formats) |
| Fiat number | 51864449 |
| BC code | BC.0096881.D / BC0096881D |
| Control unit type | CFC328F.05 / CFC328F05 |
| Label code | FJA13XBR |
| Application code | NUOVA 500 1242-8V S&S C514MTA |
We list the numbers in several formats – the way they are printed on labels and typed into search engines.
Application
Confirmed application of this number: Fiat 500 1.2 8V Start&Stop. The list is not closed: if your car is missing, it may still fit, and a listed model is no guarantee. What matters is that numbers 51864449 and CFC328F.05 match the label of your original unit – a different ending of the number means a different version.
See also
Other versions of this type of control unit (always choose by the label number): 51854504 / CFC328F.02, 51856403 / CFC328F.02, 55271242 / CFC328F.13, 51832733 / CFC328F.09, 55252680 / CFC328F.13.
Typical fault symptoms
The most common symptoms:
- the gearbox will not engage a gear or stays in neutral (N),
- no communication with the gearbox control unit in diagnostics,
- gearbox warning light or fault message.
Similar symptoms can be caused by the clutch or gear-shift actuator, so a gearbox diagnosis before buying is worthwhile.
Does it need programming?
No – control unit 51864449 does not need programming. The numbers on the label just have to match your unit.
Warranty and help with selection
Frequently asked questions about control unit 51864449
| Question |
Answer |
| Does the control unit need programming? |
No, the control unit does not need programming. |
| 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. |
| Which cars use 51864449? |
We have confirmed it in: Fiat 500 1.2 8V Start&Stop. The label number still decides. |
| How do I check whether the unit fits my car? |
Compare numbers 51864449 and CFC328F.05 with the label of your unit – they must match, including the ending. |