How to choose ECU 9GF.T6 51975364
This is a working, used Magneti Marelli 9GF.T6 engine control unit with part number 51975364, for Fiat 500 1.2 8V. The unit is tested before dispatch.
Preparation and fitting
- Virgin – Plug & Play: after fitting, the ECU codes itself to the car and immobiliser, no programming needed. Condition: matching numbers and a working immobiliser.
- IMMO OFF on request: the car runs correctly, but a red immobiliser warning appears on the dashboard and a fault is stored in diagnostics that cannot be cleared without pairing with the immobiliser. The Virgin version does not have this fault.
- Cloning on request – free of charge: send us your damaged ECU or its files and we will transfer the data to this unit.
- Every ECU is tested on the bench before dispatch.
- Warranty: 6 months.
Label numbers of 51975364
- Part number: 51975364
- ECU type: Magneti Marelli 9GF.T6
Vehicle compatibility
Compatibility is decided by part number 51975364 and marking 9GF.T6 on the label, not just by the model and year. A different number means a different ECU version.
When might the ECU be faulty?
- the engine does not start, no spark or no injector control,
- rough running, misfires,
- no communication with the ECU during diagnostics,
- no power supply to the ECU although the fuses are fine.
Before buying a new ECU, run a diagnosis – damaged wiring, a power supply problem or sensors can cause similar symptoms.
More units in the Fiat engine ECU category and on the FPT manufacturer page.
Questions about ECU 9GF.T6 51975364 – Fiat 500
Can I clone my old ECU?
Yes, on request and free of charge. Send us your damaged ECU or its files and we will transfer the data to ECU 9GF.T6 51975364.
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How do I check that 51975364 fits my Fiat 500?
Your ECU label must show part number 51975364 and marking 9GF.T6. If both match, the ECU fits.
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Does the 9GF.T6 ECU need programming?
No. The Virgin version codes itself to the car and immobiliser after fitting. A working immobiliser and matching part number are required.
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IMMO OFF or Virgin – which version should I choose?
We recommend Virgin. With IMMO OFF the car drives, but a red immobiliser warning stays on the dashboard and a fault that cannot be cleared remains in diagnostics. The Virgin version has no such fault.
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