John Deere 6603 2WD
Series: Other models
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As a tractor, the John Deere 6603 belongs to the John Deere 2WD Tractor series. Under the bonnet works a six-cylinder engine displacing 6.8 litres, producing 110 hp (81.3 kW). Rated power arrives at 2,100 rpm — the engine pulls from low down rather than needing to be revved.
Unladen, it tips the scales at 3,880 kg. Wheelbase is 2.65 m.
Within the range, rated power spans from 64.9 to 578 hp; with 110 hp, the 6603 sits in the mid-field. Directly alongside are the 6330 Premium Cab Tractor with 106 hp below and the 6420 with 112 hp above.
Technical data
Engine
| Power | 110.5 hp (81.3 kW)correct |
|---|---|
| Rated speed | 2,100 rpmcorrect |
| Torque | 451.5correct |
| Speed at max. torque | 1,101 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 6,784.2 cm³correct |
| Aspiration | turbochargedcorrect |
Dimensions and weights
| Wheelbase | 2,645.7correct |
|---|---|
| Unladen weight | 3,880 kgcorrect |
Drivetrain and chassis
| Gearbox type | TSS Top Shaft synchromesh gearboxcorrect |
|---|---|
| Forward gears | 9correct |
| Reverse gears | 3correct |
Working data
| Pump flow | 62.8 l/mincorrect |
|---|---|
| Fuel tank capacity | 158.2 lcorrect |
Where this model stands
Power-to-weight ratio: 21 kW/t (81 kW / 3.9 t)
Power class: Large (100–180 hp)
Stronger than 72% of the tractors in the register — out of 15,240 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the John Deere 6603 have?
The John Deere 6603 delivers 110 hp.
How much does the John Deere 6603 weigh?
The unladen weight is 3,880 kg.
What engine does the John Deere 6603 have?
6 cylinders, 6,784 cm³ displacement.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 15 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.