JOHN DEERE · L21 ECU

JOHN DEERE 6105 L21 tuning files

Tuning file coverage for the JOHN DEERE 6105 running the L21 ECU. The matched variants sit between 105 and 130 HP from the factory. We start conservative here — Stage 1 and Stage 2 are the dependable baseline. We match the right calibration to your exact software and validate it before delivery.

Upload your file →All 6105 coverage

Available solutions

Applicable work for the L21 on this vehicle. The available set firms up once the exact engine and software are known.

Stage 1 Stage 2

Engine variants & ECU software

6 distinct variants for the JOHN DEERE 6105 on the L21 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 4500 130HP
Engine code: 4045HL497
Controller brand: PHOENIX
ECU: L21
Stock power: 130 HP
ECU SW: SW61883F
ECU HW: RE551416

Variant 2

ECU

Catalog engine: 4500 130HP
Engine code: 4045HL497
Controller brand: PHOENIX
ECU: L21
Stock power: 130 HP
ECU SW: SW61883G
ECU HW: RE551416

Variant 3

ECU

Catalog engine: 4500 130HP
Controller brand: PHOENIX
ECU: L21
Stock power: 130 HP

Variant 4

ECU

Catalog engine: 6105R 45L 123HP
Controller brand: PHOENIX
ECU: L21
Stock power: 123 HP
ECU SW: SW62074C
ECU HW: RE551416

Variant 5

ECU

Catalog engine: 4000 105HP
Controller brand: PHOENIX
ECU: L21
Stock power: 105 HP

Variant 6

ECU

Catalog engine: 4500 105HP
Controller brand: PHOENIX
ECU: L21
Stock power: 105 HP

Related vehicles

Other vehicles built on the L21 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 6105 on the L21?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the L21 ECU software on this model?

Yes — the JOHN DEERE 6105 on the L21 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.