If you're searching for a 1971 John Deere 4520 for sale, this iconic row crop tractor delivers the horsepower, durability, and classic John Deere performance that serious operators and collectors value. Known as one of the first-generation high-horsepower tractors from John Deere, the 4520 helped redefine productivity in large-scale farming operations.
Powered by a reliable turbocharged diesel engine, the John Deere 4520 is built for heavy tillage, fieldwork, and demanding agricultural applications. Its rugged construction, simple mechanical design, and proven drivetrain make it a dependable choice even decades after production.
The 4520 is especially desirable among collectors and farmers alike due to its place in John Deere history, bridging the gap between earlier New Generation tractors and the later 30-series machines. Whether you're putting it to work or adding it to a collection, this tractor stands out as a true piece of American agricultural heritage.
With strong horsepower, a solid frame, and straightforward serviceability, the 1971 John Deere 4520 continues to be a practical and sought-after machine in today’s equipment market.
General Specs
✔ Rebuilt Clutch
✔ New Rear Main Seal
✔ New Main Driveshaft Seals (2)
✔ New PTO Seal
✔ New Throw-Out Bearing
✔ New Pilot Bearing
✔ New Grease Hose
✔ New Air Filters
✔ New Engine Oil Filter
✔ New Transmission Oil Filter
✔ Fresh Engine Oil Change
✔ Fresh Transmission Oil Change
✔ New Tubes in Front Tires
✔ New Interstate Batteries (Installed 6/2024)
✔ New 4-Way Flashers & Blinker Board
This tractor has been maintained with recent mechanical attention to ensure it remains a dependable working unit. The owner has invested in key drivetrain and service components, focusing on reliability and usability rather than cosmetic restoration.
The hour meter currently shows 526 hours, though total lifetime hours are unknown — typical for a tractor of this age.
This is not a project tractor — it is a usable, field-ready machine that has been kept operational and maintained for continued work.
Offered for sale is a 1971 John Deere 4520, a high-horsepower row crop tractor from John Deere’s highly regarded New Generation series. Known for its strong pulling power, reliable hydraulics, and simple mechanical design, the 4520 remains a sought-after machine for both working farms and collectors.
Powered by a 6-cylinder diesel engine rated around 140 horsepower, this tractor is well suited for heavy field work, hay production, and PTO-driven applications requiring 1000 RPM.
This unit has recently undergone extensive servicing and is reported to be field ready. With solid power, dependable components, and classic John Deere durability, it’s ready to go straight to work or be added to a serious collection.
Specifications are believed to be accurate but are not guaranteed and may vary by unit. Buyers should independently verify all specifications, features, and condition prior to purchase.
Manufacturer: John Deere
Model: 4520
Year: 1971
Series: New Generation Row Crop Tractor
Engine: John Deere 6-Cylinder Diesel
Displacement: approx. 404 cubic inches
Horsepower: approx. 140 HP
Transmission: Syncro-Range
Drive Type: 2WD
PTO: 1000 RPM (Non-Interchangeable Shaft)
Hydraulics: Dual Rear Remotes
Steering: Power Steering
Brakes: Hydraulic
Fuel Type: Diesel
Rear Tires: Liquid Filled
Front Tires: New Tubes Installed
Weight: approx. 13,000–15,000 lbs (varies by setup)
💪 CONDITION & APPLICATION
This John Deere 4520 is well suited for:
• Heavy tillage and field work
• Hay and forage operations
• Large PTO-driven equipment (1000 RPM)
• Cultivation and general farm use
• Collector or classic working tractor buyers
The 4520 is widely respected for its durability, torque, and straightforward mechanical design — making it a dependable choice even decades after production.
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