What do we offer under number 9664139780?
Number 9664139780 (and BC0091807E) is an original Magneti Marelli control unit for the 6-speed EGS6 / ETG6 automated manual gearbox. The unit is used and is bench-tested before shipping.
Vehicle compatibility
Compare the label first: numbers 9664139780 and BC0091807E must be the same as on your original unit, because a different letter at the end of the number means a different version. Confirmed application: Citroën C4, C4 Picasso, C4 Grand Picasso (1.6 HDi, 2.0 HDi). The list is open – a missing model does not rule out compatibility, and a listed one does not guarantee it.
Fitting
The control unit does not need programming. Compare the numbers with the label of your unit before ordering. With the same numbers, the unit works after plugging in, without coding.
How does a gearbox control unit fault show?
A faulty gearbox control unit can cause these symptoms:
- the gearbox will not engage a gear or stays in neutral (N),
- gearbox warning light or fault message,
- jerking when pulling away or changing gear.
Note: the cause may also be the clutch or gear-shift actuator. A gearbox diagnosis before buying will rule this out.
Similar numbers
We also stock: 9664870880 / BC0091807H, 9678905780 / BC0101511F, 9678905780 / BC0101511E, 9666161780 / BC0091807I, 9664965580 / BC0091807G. Choose the one whose number matches the label of your unit.
Markings of control unit 9664139780
| Label | Number (different formats) |
|---|
| PSA number | 9664139780 / 96 641 397 80 |
| Magneti Marelli number | BC.0091807.E / BC0091807E |
Each number is shown in several spellings, because that is how it appears on labels and in search engines.
Warranty and help with selection
FAQ – gearbox control unit 9664139780 / BC0091807E
| Question |
Answer |
| Which cars does this control unit fit? |
Confirmed application: Citroën C4, C4 Picasso, C4 Grand Picasso (1.6 HDi, 2.0 HDi). The label number has the final say. |
| How do I check whether the unit fits my car? |
Compare numbers 9664139780 and BC0091807E with the label of your unit – they must match, including the letter at the end. |
| Does the control unit need programming? |
No, the control unit does not need programming. With the same numbers, the unit works after plugging in, without coding. |
| Is this an automatic gearbox control unit? |
It controls an automated manual gearbox: a conventional gearbox with a clutch, where gear changes and the clutch are operated by electronically controlled actuators. It is not a torque-converter automatic. |
