John Deere tractor · 1963-1972

John Deere 4020 Tractor

The John Deere 4020 is a 1963-1972 row-crop tractor widely regarded as one of the most successful American tractors ever built. With roughly 95 PTO horsepower in common diesel configurations, it is prized for durable power, capable hydraulics, and broad farm utility.

Production years

1963-1972

Engine

6.6 L inline 6-cylinder diesel or gasoline

Power

Approx. 95 PTO hp, varies by year and fuel

Weight

Approx. 9,000 lb

John Deere 4020 specifications

Production years	1963-1972
Engine	6.6 L inline 6-cylinder diesel or gasoline
Power	Approx. 95 PTO hp, varies by year and fuel
Transmission	Syncro-Range 8-speed or Power Shift 8-speed
Weight	Approx. 9,000 lb
Fuel type	Diesel or gasoline
PTO	Independent 540 rpm
Hydraulics	Closed-center hydraulic system

What the 4020 is used for

John Deere built the 4020 for row-crop and livestock farms, including tillage, planting, haying, and hauling. Its power, hydraulics, independent PTO, and operator controls made it a major advance over earlier utility tractors.

Owners still use 4020s for hay equipment, augers, chore work, moderate tillage, and shows. A well-maintained diesel remains a highly capable working classic, though it lacks modern rollover protection and cab refinement unless retrofitted.

Why the John Deere 4020 stands out

The 4020 is famous for its durable six-cylinder engines, versatile hydraulics, comfortable controls, and exceptionally strong parts and service network. Its continuing usefulness and collector demand make it a benchmark classic tractor.

Buying a used John Deere 4020

Start the engine cold and test shifting in every range, PTO and clutch operation, hydraulics, brakes, steering, and final-drive noise. Inspect for hydraulic leaks and neglected maintenance, especially on Power Shift models; confirm configuration-specific figures with TractorData.com and John Deere serial-number records, and check current listings because values vary.

John Deere 4020 frequently asked questions

How much horsepower does a John Deere 4020 have?

It is commonly associated with about 95 PTO horsepower, though ratings vary by fuel type and configuration.

What years was the John Deere 4020 made?

John Deere produced the 4020 from 1963 through 1972.

Is a John Deere 4020 still a good working tractor?

Yes. A sound example remains useful for many farm jobs, with widely available parts and service knowledge.

Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.

Other John Deere tractors

John Deere 40 John Deere 50 John Deere 60 John Deere 70 John Deere 620 John Deere 720 John Deere 820 John Deere 830 John Deere 1020 John Deere 1025R John Deere 2010 John Deere 2020 John Deere 2350 John Deere 2440 John Deere 2630 John Deere 3010 John Deere 3020 John Deere 3038E John Deere 4010 John Deere 4030 John Deere 4055 John Deere 4230 John Deere 4255 John Deere 4320 John Deere 4430 John Deere 4440 John Deere 4455 John Deere 4520 John Deere 4630 John Deere 5010 John Deere 5020 John Deere 5055E John Deere 5075E John Deere 6030 John Deere 6410 John Deere 7520 John Deere 8630 John Deere A John Deere B John Deere G