Variant 1
ECU- Catalog engine
- 4500 80HP
- Engine code
- 4045TL271
- Controller brand
- PHOENIX
- ECU
- L12
- Stock power
- 80 HP
- ECU SW
- SW50965D
- ECU HW
- RE522528
- Calibration
- CD4045G051054
JOHN DEERE · L12 ECU
JOHN DEERE 6120 L12 tuning files
The JOHN DEERE 6120 on the L12, mapped from stock file to finished result. Stock output across the matched variants spans 80–80 HP. For this platform the dependable path begins with Stage 1 and Stage 2. Your file is built against the exact ECU software on the car, then operator-verified.
Available solutions
Solutions that apply to the L12 on this vehicle platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
1 distinct variant for the JOHN DEERE 6120 on the L12 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the L12 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the JOHN DEERE 6120 on the L12?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the L12 ECU software on this model?
Yes — the JOHN DEERE 6120 on the L12 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.