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About the John Deere 4020

Make sure you have access to your tractor serial number, because there is a chance that the John Deere 4020 parts you need depend on that serial number. Usually, the serial number is printed on the rear of transmission case. That serial number is determined by the year of manufacturing, so for a 1964 model, it starts with 65000, for a 1965 model it starts with 91000, for a 1966 model it starts with 119000, for a 1967 model it starts with 145660, for a 1968 model it starts with 173982, for a 1969 model it starts with 201000, for a 1970 model it starts with 222160, for a 1971 model it starts with 250000, for a 1972 model it starts with 260791, for a final model it starts with 270288. Some John Deere 4020 Tractors have a 4x2 2WD chassis, but there are also some with a 4x4 HFWD 4WD*Front-wheel assist was optional after 1969. chassis, all equipped with power steering. They also have hydraulic wet disc brakes. The type II 3-point hitch is very reliable, capable to lift 3790 lbs [1719 kg]. It is also worth noting that the independent rear PTO runs at 540/1000 rpms and the fact that there are not many tractors equipped with an independent front PTO like this one.

Parts for John Deere 4020 Tractor

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Air Cleaner Components

Air Conditioning



Cab Parts


Clutch Parts

Powershift Transmission

Synchro-Range Transmission

Syncro/Quad Range

Cooling System

341 & 362 Gas

6-404 Diesel

Engine Related Parts

Fan Blades

Radiators/Radiator Hoses

Water Pumps

Water Pumps - Diesel

Water Pumps - Gas


Engine Overhaul Kits

Engine Parts

340 CID Gas

341 & 362 Gas

6-404 Diesel

6.329 Diesel, 300 Series

6.404D Diesel, 400 Series

Camshaft & Components

Crankshaft & Components

Engine Oil Pump, Cooler, and Related

Engine Related Parts

Exhaust System Parts


Gaskets/Gasket Sets



Front Axle/Steering Parts

Axle Related Parts

Axles and Knees

Center Tubes

Front Support Parts


Pivot Components

Power Steering Pumps and Motors

Spindles and Related Parts

Steering Arms and Shafts

Steering Related Parts

Tie Rods and Ball Joints

Wheel Bearings and Sleeves

Wheel Components

Fuel System

Hitch & Drawbar Parts

Drawbars and Related Parts

Hitches: 2PT and 3PT

Lift Link Balls

Lift Link Components

Load Control Shafts/Components

Rockshaft Cylinders and Parts

Stabilizer and Sway Block Parts


Hydraulic System

Control Valves

Hydraulic Coupler Conversion Kits

Hydraulic Piston Pump/Components

Hydraulic Pumps/Components


Miscellaneous Hydraulic Parts

Selective Control Valve/Components

Ignition & Electrical Parts

Alternators & Related Parts

Engine Related Parts


Ignition & Related Parts

Instrument Panels, Gauges & Related Parts

Lights & Related Parts

Starters & Related Parts


Tune Up Kits

Mufflers/Exhaust Pipes

PTO Components

Rims & Wheels