Variant 1
ECU- Catalog engine
- 4500 120HP
- Controller brand
- PHOENIX
- ECU
- L4
- Stock power
- 120 HP
JOHN DEERE · L4 ECU
JOHN DEERE 6420 L4 tuning files
Tuning file coverage for the JOHN DEERE 6420 running the L4 ECU. The matched variants sit between 120 and 120 HP from the factory. There are 2 distinct variants on file for this combination. For this platform the dependable path begins with Stage 1 and Stage 2. Each file is tied to the precise software on your car and checked before it goes out.
Available solutions
Applicable work for the L4 on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
2 distinct variants for the JOHN DEERE 6420 on the L4 ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 4500 120HP
- Engine code
- 4045HLA73
- Controller brand
- PHOENIX
- ECU
- L4
- Stock power
- 120 HP
- ECU SW
- SW50745D
- ECU HW
- RE506664
Related vehicles
Other vehicles built on the L4 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 6420 on the L4?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the L4 ECU software on this model?
Yes — the JOHN DEERE 6420 on the L4 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.