John Deere 4020 · 1963–1972
Enter your 4020's serial number to discover its production year, where it falls in that year's build run, and what changed on the line that season.
Valid range: 65,000 – 270,288 · 205,289 tractors built
The John Deere 4020 was produced from 1963 to 1972 at Deere's Waterloo, Iowa factory. It replaced the 4010 and became the best-selling tractor in its horsepower class during its production run. A total of 205,289 units were built across diesel, gasoline, and LP gas variants in row-crop, standard, hi-crop, and industrial configurations.
Total Built
205,289
Production Years
1963–1972
10 model years
First Serial
65,000
1963
Last Serial
270,288
1972
| Year | Serial Range | Units Built |
|---|---|---|
| 1963 | 65,000 – 91,999 | 27,000 |
| 1964 | 92,000 – 122,999 | 31,000 |
| 1965 | 123,000 – 155,999 | 33,000 |
| 1966 | 156,000 – 187,999 | 32,000 |
| 1967 | 188,000 – 214,999 | 27,000 |
| 1968 | 215,000 – 236,999 | 22,000 |
| 1969 | 237,000 – 252,999 | 16,000 |
| 1970 | 253,000 – 261,999 | 9,000 |
| 1971 | 262,000 – 267,999 | 6,000 |
| 1972 | 268,000 – 270,288 | 2,289 |
Diesel
168,311 built
By far the most common variant — 91% of all 4020s built. The 6-cylinder diesel became the defining engine of the model.
Gasoline
8,123 built
Relatively rare — only 4.4% of production. Gas variants are identifiable by the carburetor and different air cleaner stack.
LP Gas (Propane)
8,445 built
LP variants were popular in regions where propane was readily available and cheaper than diesel. Identifiable by the large LP tank and vaporizer system.