Brand siblingUtilityPerformance profile
John Deere 6603
The John Deere 6603 is a powerful utility tractor designed for various farm tasks. It has a 2WD chassis and power steering, making it easy to handle in the field. The tractor comes with a 9-forward and 3-reverse gear transmission, giving farmers plenty of options for different jobs. Under the hood, the 6603 boasts a John Deere 6068T engine. This 6-cylinder diesel engine is turbocharged and liquid-cooled, providing a very high displacement of 414 ci. It generates 112 hp at 2100 rpm, which is above average for its class. The engine's power and efficiency make it suitable for demanding farm work. The tractor also features a three-point hitch with a very high capacity of 4828 lb, allowing it to handle heavy implements with ease. In tests, the John Deere 6603 showed impressive performance. It achieved maximum power of 101.71 hp at 1950 rpm during a two-hour test. The tractor also demonstrated good fuel efficiency, using 5.67 gal/hr at standard PTO speed. These results highlight the 6603's capability to tackle tough jobs while maintaining reasonable fuel consumption, making it a reliable choice for farmers looking for a versatile and efficient utility tractor.
ManufacturerJohn DeerePower112 hpEngine6-cylTransPartially synchronized
Quick specs
- Category
- Utility
- Engine Power Output
- 112hp
- Transmission
- Partially synchronized
At a glance
How the 6603 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
112 hp · 87th
This model
9
Median 55 hp
177
This modelUtility tractorsMediann = 5,383
The 6603 ranks at the 87th percentile for engine power among recorded utility tractors.
Overview
About the John Deere 6603
The John Deere 6603 is a powerful utility tractor designed for various farm tasks. It has a 2WD chassis and power steering, making it easy to handle in the field. The tractor comes with a 9-forward and 3-reverse gear transmission, giving farmers plenty of options for different jobs. Under the hood, the 6603 boasts a John Deere 6068T engine. This 6-cylinder diesel engine is turbocharged and liquid-cooled, providing a very high displacement of 414 ci. It generates 112 hp at 2100 rpm, which is above average for its class. The engine's power and efficiency make it suitable for demanding farm work. The tractor also features a three-point hitch with a very high capacity of 4828 lb, allowing it to handle heavy implements with ease. In tests, the John Deere 6603 showed impressive performance. It achieved maximum power of 101.71 hp at 1950 rpm during a two-hour test. The tractor also demonstrated good fuel efficiency, using 5.67 gal/hr at standard PTO speed. These results highlight the 6603's capability to tackle tough jobs while maintaining reasonable fuel consumption, making it a reliable choice for farmers looking for a versatile and efficient utility tractor.
Full specifications
Every recorded spec
General
| Manufacturer | John Deere |
|---|---|
| Model | 6603 |
| Category | Utility tractor |
| Type | 4x2 2WD |
Engine
| Make | John Deere |
|---|---|
| Model | 6068T |
| Power | 112hp |
| Cylinders | 6 |
| Displacement | 414ci |
| Bore | 4.19in |
| Stroke | 5in |
Transmission
| Type | Partially synchronized |
|---|---|
| Forward gears | 9 |
| Reverse gears | 3 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Power |
Hydraulics
| Type | Open center |
|---|
Dimensions
| Width | 73in |
|---|
Capacities
| Cooling system | 4.88gal |
|---|
Head to head
6603 vs. Utility median
How the John Deere 6603 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 112 hp | 55 hp | +104% | 87th |
| Engine Displacement | 414 ci | 183 ci | +126% | 91st |
| Cylinders | 6 | 4 | +50% | 93rd |
| Forward Gears | 9 | 12 | -25% | 35th |
| Width | 73 in | 66 in | +11% | 67th |
| 3-Point Hitch Capacity | 4,828 lb | 3,197 lb | +51% | 73rd |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 1,083–5,720 models).
Compare to tractors with similar specs
Commonly compared John Deere tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| John Deere 6130D | 111.98 hp | 10,175 lb | — | Compare → |
| John Deere 6430 | 112.5 hp | 9,985 lb | — | Compare → |
| John Deere 6120R | 113.2 hp | 12,390 lb | — | Compare → |
| John Deere 3340 | 110 hp | — | 1980–1987 | Compare → |
| John Deere 3651 | 110 hp | 13,510 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Agco LT95A | 111.6 hp | 11,070 lb | — | Compare → |
| AGCO LT85A | 110.1 hp | 10,605 lb | — | Compare → |
| AGCO LT90A | 110 hp | 8,820 lb | — | Compare → |
| Agrinar T-110 | 110 hp | — | — | Compare → |
| Allis Chalmers HD11 | 110 hp | 21,000 lb | 1955–1965 | Compare → |
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Gallery
John Deere 6603 photos
FAQ
Common questions
How much horsepower does the John Deere 6603 have?
The John Deere 6603 produces 112 hp from its 6-cylinder engine. Engine displacement is 414 ci.
What transmission is in the John Deere 6603?
Transmission on the John Deere 6603 is Partially synchronized, with 9 forward speeds.
What type of hydraulic system does the John Deere 6603 use?
Hydraulics on the John Deere 6603 are Open center.
What hitch category is the John Deere 6603?
The John Deere 6603 uses a Category II hitch with a lift capacity of 4,828 lb.
What maintenance does the John Deere 6603 require?
Like any tractor, the John Deere 6603 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.