John Deere 9420R
The John Deere 9420R is a powerful tractor built for big farms. It has a strong diesel engine with six cylinders and two turbochargers. This engine can produce up to 420 horsepower, which is a lot of power for tough jobs. The tractor has 18 forward gears and 6 reverse gears, giving the driver many options for different tasks. This tractor is big and heavy, weighing 42,965 pounds. It's 314.3 inches long, 176 inches wide, and 145 inches tall. The John Deere 9420R has a comfortable cab for the driver and a strong hydraulic system for lifting heavy equipment. It can pull very heavy loads with its Category 4 hitch. The tractor also has a good fuel system that helps it work efficiently. Tests show it can pull over 25,000 pounds while moving at nearly 5 miles per hour.

Quick specs
- Category
- Four-Wheel Drive
- Operating Weight
- 42,965 lb
- Transmission
- Selective gear fixed ratio with full range operator controlled power shift
Overview
About the John Deere 9420R
The John Deere 9420R is a powerful tractor built for big farms. It has a strong diesel engine with six cylinders and two turbochargers. This engine can produce up to 420 horsepower, which is a lot of power for tough jobs. The tractor has 18 forward gears and 6 reverse gears, giving the driver many options for different tasks. This tractor is big and heavy, weighing 42,965 pounds. It's 314.3 inches long, 176 inches wide, and 145 inches tall. The John Deere 9420R has a comfortable cab for the driver and a strong hydraulic system for lifting heavy equipment. It can pull very heavy loads with its Category 4 hitch. The tractor also has a good fuel system that helps it work efficiently. Tests show it can pull over 25,000 pounds while moving at nearly 5 miles per hour.
Full specifications
Every recorded spec
General
| Manufacturer | John Deere |
|---|---|
| Model | 9420R |
| Category | Four-Wheel Drive tractor |
| Operating weight | 42,965lb |
Engine
| Make | John Deere |
|---|---|
| Model | John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment |
| Cylinders | 6 |
| Displacement | 826ci |
| Bore | 5.2in |
| Stroke | 6.5in |
Transmission
| Type | Selective gear fixed ratio with full range operator controlled power shift |
|---|---|
| Forward gears | 18 |
| Reverse gears | 6 |
Chassis & drive
| Cab | Cab |
|---|
Hydraulics
| Type | Closed-center pressure/flow compensated |
|---|
Dimensions
| Length | 314.3in |
|---|---|
| Width | 176in |
| Height | 145in |
| Operating weight | 42,965lb |
Capacities
| Cooling system | 16.78gal |
|---|
Head to head
9420R vs. Four-Wheel Drive median
How the John Deere 9420R compares to other Four-Wheel Drive tractors
| Spec | This model | Four-Wheel Drive median | Difference | Percentile |
|---|---|---|---|---|
| Engine Displacement | 826 ci | 826 ci | at median | 50th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 18 | 16 | +13% | 86th |
| Operating Weight | 42,965 lb | 37,428 lb | +15% | 67th |
| Length | 314 in | 275 in | +14% | 87th |
| Width | 176 in | 116 in | +52% | 89th |
| Height | 145 in | 143 in | +2% | 58th |
Medians and percentiles are computed from the four-wheel drive tractors in our database with a recorded value for each spec (sample sizes 71–159 models).
Compare to tractors with similar specs
Commonly compared John Deere tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| John Deere 7520 (1972-1975) | 175 hp | 16,800 lb | 1972–1975 | Compare → |
| John Deere 8870 | 350 hp | 35,130 lb | 1993–1996 | Compare → |
| John Deere 9120 | 244.57 hp | 35,375 lb | — | Compare → |
| John Deere 9200 | 296.92 hp | 35,120 lb | 1996–2001 | Compare → |
| John Deere 9220 | 282.16 hp | 36,680 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Advance-Rumely 6A | — | 6,370 lb | — | Compare → |
| Advance-Rumely DoAll | — | 3,702 lb | — | Compare → |
| Advance-Rumely OilPull B 25/45 | — | 25,000 lb | — | Compare → |
| Advance-Rumely OilPull E 30/60 | — | 26,300 lb | — | Compare → |
| Advance-Rumely OilPull F 15/30 | — | 16,500 lb | — | Compare → |
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Gallery
John Deere 9420R photos




FAQ
Common questions
How many cylinders does the John Deere 9420R have?
The John Deere 9420R runs a 6-cylinder engine with a displacement of 826 ci.
What type of transmission does the John Deere 9420R have?
The John Deere 9420R uses a Selective gear fixed ratio with full range operator controlled power shift transmission offering 18 forward gears.
What type of hydraulic system does the John Deere 9420R use?
Hydraulics on the John Deere 9420R are Closed-center pressure/flow compensated.
What hitch category is the John Deere 9420R?
The John Deere 9420R uses a Category IV hitch.
What is the working weight of the John Deere 9420R?
The operating weight of the John Deere 9420R is approximately 42,965 lb.
What routine service does the John Deere 9420R need?
Regular maintenance for the John Deere 9420R includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.


