CrawlerPerformance profile
John Deere 8420T
The John Deere 8420T is a powerful crawler tractor built for tough farming jobs. It has tracks instead of wheels, which helps it move well on different types of ground. The tractor is big, measuring 207 inches long, 103.7 inches wide, and 122.9 inches tall. It's also heavy, weighing 26,380 pounds, which is above average for tractors like this. Under the hood, the 8420T has a strong John Deere diesel engine with 6 cylinders. The engine makes 284 horsepower, which is quite high for tractors. It has a full power shift transmission with 16 forward gears and 4 reverse gears, giving the driver lots of control. The tractor has a three-point hitch at the back for attaching tools. It also has a closed center hydraulic system, which helps it work well with different farm equipment. The driver sits in a comfortable cab, making long work days easier.
ManufacturerJohn DeerePower284 hpEngine6-cylTransFull power shift
Image not recorded
Quick specs
- Category
- Crawler
- Engine Power Output
- 284hp
- Operating Weight
- 26,380 lb
- Transmission
- Full power shift
At a glance
How the 8420T compares
vs. Crawler medianDistribution
Engine Power (hp)
Across all Crawler tractors
284 hp · 63rd
This model
18
Median 200 hp
508
This modelCrawler tractorsMediann = 142
The 8420T ranks at the 63rd percentile for engine power among recorded crawler tractors.
Overview
About the John Deere 8420T
The John Deere 8420T is a powerful crawler tractor built for tough farming jobs. It has tracks instead of wheels, which helps it move well on different types of ground. The tractor is big, measuring 207 inches long, 103.7 inches wide, and 122.9 inches tall. It's also heavy, weighing 26,380 pounds, which is above average for tractors like this. Under the hood, the 8420T has a strong John Deere diesel engine with 6 cylinders. The engine makes 284 horsepower, which is quite high for tractors. It has a full power shift transmission with 16 forward gears and 4 reverse gears, giving the driver lots of control. The tractor has a three-point hitch at the back for attaching tools. It also has a closed center hydraulic system, which helps it work well with different farm equipment. The driver sits in a comfortable cab, making long work days easier.
Full specifications
Every recorded spec
General
| Manufacturer | John Deere |
|---|---|
| Model | 8420T |
| Category | Crawler tractor |
| Type | Track |
| Operating weight | 26,380lb |
Engine
| Make | John Deere |
|---|---|
| Power | 284hp |
| Cylinders | 6 |
| Displacement | 496ci |
| Bore | 4.56in |
| Stroke | 5.06in |
Transmission
| Type | Full power shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 4 |
Chassis & drive
| Drive | Track |
|---|---|
| Steering | Electro-hydraulic power |
| Cab | Cab |
Hydraulics
| Type | Closed center pressure flow compensated (PFC) |
|---|
Dimensions
| Length | 207in |
|---|---|
| Width | 103.7in |
| Height | 122.9in |
| Operating weight | 26,380lb |
Capacities
| Cooling system | 8.98gal |
|---|
Head to head
8420T vs. Crawler median
How the John Deere 8420T compares to other Crawler tractors
| Spec | This model | Crawler median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 284 hp | 200 hp | +42% | 63rd |
| Engine Displacement | 496 ci | 468 ci | +6% | 54th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 16 | 10 | +60% | 69th |
| Operating Weight | 26,380 lb | 23,320 lb | +13% | 59th |
| Length | 207 in | 146 in | +42% | 70th |
| Width | 104 in | 79.5 in | +30% | 76th |
| Height | 123 in | 90.6 in | +36% | 69th |
Medians and percentiles are computed from the crawler tractors in our database with a recorded value for each spec (sample sizes 134–192 models).
Compare to tractors with similar specs
Commonly compared John Deere tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| John Deere 8330T 235 PTO hp | 280 hp | 27,060 lb | — | Compare → |
| John Deere 8295RT | 279.14 hp | 33,660 lb | — | Compare → |
| John Deere 8410T | 270.62 hp | 26,380 lb | — | Compare → |
| John Deere 8330T | 270.21 hp | 28,350 lb | — | Compare → |
| John Deere 9300T | 302.73 hp | 42,090 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| CaseIH 9150 | 280 hp | 23,000 lb | — | Compare → |
| AGCO DT240A | 290 hp | 19,951 lb | 2005–2008 | Compare → |
| AGCO DT250B | 290 hp | 25,960 lb | 2009–2010 | Compare → |
| Baldwin DM300 | 290 hp | — | — | Compare → |
| Allis Chalmers 8550 | 300 hp | 27,040 lb | 1978–1981 | Compare → |
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FAQ
Common questions
How much horsepower does the John Deere 8420T have?
The John Deere 8420T produces 284 hp from its 6-cylinder engine. Engine displacement is 496 ci.
What hydraulics does the John Deere 8420T have?
The John Deere 8420T uses a Closed center pressure flow compensated (PFC) hydraulic system.
What three-point hitch category does the John Deere 8420T use?
The John Deere 8420T has a Category III/IIIN three-point hitch.
How much does the John Deere 8420T weigh?
The John Deere 8420T weighs about 26,380 lb in operating condition.
What transmission is in the John Deere 8420T?
Transmission on the John Deere 8420T is Full power shift, with 16 forward speeds.
What maintenance does the John Deere 8420T require?
Like any tractor, the John Deere 8420T 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.