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John Deere 4020 - Featured Tractor

The John Deere 4020 model tractor was produced in 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 and 1972 in Waterloo, Iowa and Mexico. It has a 404 ci engine rated at 101 horsepower.

Our Most Popular JD 4020 Parts

(Click here to see all parts available)

John Deere 4020 Clutch

4020 Clutch Adjusting Tool
Clutch Adjusting Tool - For tractor models 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620, 7020.[...] 830602 ... $72.32

John Deere 4020 Cooling System

4020 Radiator Cap
Radiator Cap - For tractor models 2010, 2510, 2520, 3010, 3020, 4000, 4010, 4020, 4030, 4320, 4430, 4520, 4620, 463[...] R27209 ... $20.78
4020 Water Pump
Water Pump - For tractor models 3010, 3020, 4000, 4010, 4020 All Diesel without AC. Replaces casting numbers R263[...] AR45332 ... $91.43

John Deere 4020 Decals and Emblems

4020 Decal Set
Decal Set - COMPLETE Decal Set for John Deere Model 4020. Does not include Syncro-Range or Powershift decals, Se[...] R2610 ... $29.25
4020 Hood Ornament
Hood Ornament - For tractor models 1010, 2010, 2510, 2520, 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620, 5010, 502[...] AR28047 ... $31.45
4020 Side Hood Emblems, OEM Set
Side Hood Emblems, OEM Set - 37" in length with 5 mounting studs. Mounting is speed nut type, no threads. For 1010, 2010, 2510, 2[...] R2533 ... $258.76
4020 Syncro-Range and Power Shift Decal Set
Syncro-Range and Power Shift Decal Set - This Mylar set covers those decals that are different than the normally used set when used for the S[...] AR52393 ... $40.31

John Deere 4020 Electrical System

4020 12 Volt Conversion Kit
12 Volt Conversion Kit - Converts 24 Volt systems to 12 Volts on gas and diesel models 3010, 3020, 4010, 4020. Kit includes: [...] TS-8000 ... $380.88
4020 Alternator
Alternator - 12 volt, 72 amp. For tractor models (H155 1972-73 with 531 dsl), 544, (5200 1974-77 with 404 dsl), ([...] ADR0133 ... $64.79
4020 Electronic Ignition Conversion Kit, 12 volt negative ground
Electronic Ignition Conversion Kit, 12 volt negative ground - For Tractor Models 4010, 4020 with 302, 340 eng., 4020 with 362 eng using Delco distributor # 111262[...] 1163A ... $81.45
4020 Electronic Ignition Conversion Kit, 12 volt positive ground
Electronic Ignition Conversion Kit, 12 volt positive ground - Use on the following tractors: 4010 and 4020 with 6-cylinder engine sizes 302, 340, 362 using Delco [...] 1163AP12 ... $90.78
4020 Ignition Switch with 2 Keys
Ignition Switch with 2 Keys - 6 Terminal. For tractor models 2510, (5010 SN# 008000 and up), (3020 SN# 68000 to 122999), (4020 SN#[...] AR39505 ... $24.75
4020 Key Switch, 6 Terminal
Key Switch, 6 Terminal - With key. For tractor models (1010 gas or LP up to SN# 51039), (2010 gas/LP up to SN# 055380), (3010[...] AR26528 ... $38.40
4020 Key Switch, 6 Terminal
Key Switch, 6 Terminal - With keys. For tractor models (3010 diesel), (3020 diesel up to SN# 67999), (4010 diesel), (4020 die[...] AR26557 ... $43.13
4020 Light Switch, 12 Volt
Light Switch, 12 Volt - 4 position, 5 terminals and fuse, .50" thread dia. For tractor models 1010, 1020, 1520, 2010, 2020, [...] AR28401 ... $24.15

John Deere 4020 Fuel System / Air Intake

4020 Carburetor Kit, Basic
Carburetor Kit, Basic - Kit for Zenith 12510, 13429, 12879, 13320, 13450, 13430 carbs on 3010, 3020, 4020. John Deere Carb: [...] Z106 ... $26.25
4020 Carburetor, Rebuilt
Carburetor, Rebuilt - Fits 3010, 3020, 4010, 4020 - replacement for OEM USX20, USX21, USX30, USX31, USX35, USX36, USX48. A[...] 1532-CARB ... $310.41
4020 Carburetor, Rebuilt
Carburetor, Rebuilt - Fits 3010, 3020, 4010, 4020 - replacement for OEM 12510, 12879, 13320, 13429, 13430. Add $200.00 cor[...] 1534-CARB ... $278.31
4020 Fuel Injector
Fuel Injector - For tractor models JD 3010, 3020, 4010, 4020 model tractors with injector #20494. Replaces AR39811, [...] AR50781 ... $35.43
4020 Fuel Injector
Fuel Injector - Nozzle, Injector. Pencil-type injector For tractor models 840, 940, 1020, 1030, 1040, 1129, 1139, 11[...] AR89564 ... $33.75
4020 Fuel Pump
Fuel Pump - Fuel transfer pump, similar to original equipment manufacturer, cannot be repaired. Diesel tractors:[...] TP-RE42211A ... $62.44
4020 Fuel Pump
Fuel Pump - This fuel pump is for diesel tractors: 830, 930, 1020, 1520, 2020, 2030, 2040, 2240, 2440, 2510, 252[...] TP-RE42211B ... $26.75
4020 Fuel Transfer Pump Repair Kit
Fuel Transfer Pump Repair Kit - Repair kit, for fuel transfer pump RE42211, RE42211B. Used on diesel tractors: 1020, 1520, 2020, 203[...] RE42211RK ... $20.25
Grommet, Fuel Filler, Black - For tractor models 70, 620, 630, 720, 730, 1020, 1520, 2020, 3010, 3020, 4010, 4020, 5010. Measures [...] A5157R ... $19.95
Grommet, Fuel Filler, Red - For tractor models 820 (3 cyl.), 1010, 1020, 1520, 1530, 2010, 2020, 2030, 2040, 2240, 2440, 2510, 2[...] R39613R ... $18.75
4020 Precleaner Cover, Metal
Precleaner Cover, Metal - 7" diameter with brass nut, fits Donaldson pre-cleaners. For tractor models Some 60, 70, 520, 530, 6[...] AF3583R ... $26.48

John Deere 4020 Gauges

4020 Tachometer Cable
Tachometer Cable - 33" long. For tractor models 3010, 3020, 4010, 4020, 4320, 4520, 4620.[...] AR26721 ... $16.13
4020 Transmission Oil Temperature Gauge
Transmission Oil Temperature Gauge - For tractor models (3020 SN# 123000 and up), (4020 SN# 201000 and up), 4320, 4520, 4620.[...] AR46979 ... $43.90

John Deere 4020 Hitch / Drawbar

Cat II Top Link - Category 2 Quick Release Top Link with Knuckle. Extends from 25 inches to 33.5 inches. Barrel length[...] AR34208 ... $199.81

John Deere 4020 Lights

4020 Dash Light - 12 Volt
Dash Light - 12 Volt - For tractor models 50 up to SN# 5016122, 60 to SN# 6017060, 70 Highcrop to SN# 706327, 520 to SN# 52[...] AD2835R-12V ... $18.71
Light Switch, 4 position - 6 terminal, uses knob R46092. For tractor models (2350 with sound guard cab), (2520 from SN# 22001 a[...] AR48724 ... $20.91
4020 Work Tail Light
Work Tail Light - 2 wire connectors. 6 Volt. For tractor models 50, 60, 70, 80, 520, 530, 620, 720, 730, 820, 930, 102[...] AR77326 ... $51.67

John Deere 4020 Seats

4020 Seat Cushion Set
Seat Cushion Set - Yellow Leatherette upholstery seat cushion set. Includes seat, lower and upper backrests. For tracto[...] JD5678 ... $119.04

John Deere 4020 Sheet Metal / Body Parts

4020 Battery Box, LH
Battery Box, LH - For tractor models 2520, (3020 serial number 123000 and up), (4000 Row crop serial number 201000 and[...] AR40674 ... $80.37
4020 Battery Box, RH
Battery Box, RH - For tractor models 2520, (3020 serial number 123000 and up), (4000 Row crop serial number 201000 and[...] AR40673 ... $80.37
Side Screen - Side grill panel, 17 x 19-3/4. For tractors: 4000, 4010, 4020. Two(2) used per tractor. Sold individ[...] AR32720 ... $78.75

John Deere 4020 Steering

4020 Steering Wheel
Steering Wheel - Steering wheel, 16 1/2 diameter, 7/8" splined hub, smooth finish. Tractors: 820 Germany, 830 Germany[...] T22875 ... $37.50
Steering Wheel - 16" diameter, 7/8" splined hub, smooth finish, like original. For tractor models 1010, 2010, 2510, 3[...] AR26625 ... $43.68
Steering Wheel Cap - This 2 legged deer, correct cap for many covered steering wheels on JD models from 1968-2000. Fits a[...] AL155227 ... $32.76
Steering Wheel Cap, Black Face - For tractor models: 1020, (820 3-cyl), 1520, 2020, 2510, 2520, 3020, 4000, 4020, 4320, 4520, 4620, 5[...] R26673 ... $48.30

John Deere 4020 Wheels

4020 Front Wheel Bearing Kit
Front Wheel Bearing Kit - Wheel bearing kit. For 1020, 1520, 2030, 2440, 2510, 2520, 2630, 2640, 3010, 3020, 4000, 4010, 4020,[...] FW157S ... $44.86

Click here to see our full catalog of John Deere 4020 Parts



Recent Topics

  • 4020 charging - A family friend lives on a farm, her husband passed away a few years ago. She let the 4020 sit all winter and the batteries are dead as a doornail. Can I stick my charger on one side and let it charge, or do I have to disconnect the two batteries first? Joe.
  • 4020 engine issue - Finally got time to tear into our 1967 4020 diesel, syncro, with a M&W turbo that I had asked you guys about a couple months ago. The general idea was that it was a piston with broken rings. Well, we tore into it and all the pistons, liners, and rings are fine and installed in the proper direction (as they came to us as "loaded" liners, with the pistons and rings already installed in the liners) We also took the head back to the shop where it was done up 2 years ago when we overhauled ...
  • New to me 4020 - I bought a 71 model 4020 yesterday, my question is the tractor had a cab when bought new has been taken off sometime ago but it doesn't have the tool box under the left side of the seat, was this how the came from the factory? I'm the 3rd owner local tractor 7400 hours and never been painted, it was a hay tractor never had a loader and all controls very tight, I'm proud to own this piece of John Deere history
  • 4020 rear outlet pops hoses out - I have a 1966 4020 that routinely pops the hydraulic hose out of the SCV on the rear of the tractor. New tips on hoses, etc, it doesn't matter. Is this an indication that the barrel is worn out? I've found lots of posts about "rebuilding" these but people only mention Orings, where mine seems to have a mechanical issue actually holding the tip in. Is this the time to convert to newer Pioneer style tips if the barrel needs replaced anyway? Thanks!
  • 4020 stolpher cab with A/C intermittent ?? - I have a 1970 4020 console with stopper cab and yes a A/C still on R12. Blows super cold but now the fan in cab quit and also the compressor stopped turning. Cut the switch off while tractor is still running and let it sit and it come son again blowing cold for less,than a minute and turns back off.... I check outside and lines are not froze up. Is there a relay or temp switch possibly going out telling it to turn off or a ,aim relay for all of it since the blower fan don't work either ..? Th ...


  • Recent Ads


    1970 John Deere 4020 diesel synchro, 3pt,PTO, diff lock, new 38 inch radial rear tires. Can send pictures. Condition: Runs great, Price: 8500, Posted 2018-03-25 by Not given, in Alva OK.

    NEW STEEL JOHN DEERE FUEL TANKS FITS 4010 and 4020 still in original shipping box and on pallet these are priced right we have several and some reconditioned tanks Condition: new , Price: 600 eabo, Posted 2018-03-26 by DICK, in bethel MN.

    NEW STEEL JOHN DEERE FUEL TANKS FITS 4010 and 4020 still in original shipping box and on pallet these are priced right we have several and some reconditioned tanks Condition: new , Price: 600 eabo, Posted 2018-03-26 by DICK, in bethel MN.

    Wanted: John Deere 4020 Standard - Looking for double step which mounts on the side rail Condition: Good, Posted 2018-04-04 by Mike, in Columbus IN.

    1970 John Deere 4020 diesel. Can email pictures. Condition: Good , Price: 8000, Posted 2018-04-05 by Not given, in Alva OK.

    Important: Yesterday's Tractor Co. takes no responsibility for the accuracy, validity or availability of the items listed here nor do they receive any profit from the 3rd party transactions that may transpire from the use of this website. Yesterday's Tractor Co. does not sell tractors, nor do we collect money or broker transactions for others.


    Archived Ads for John Deere 4020 Tractors
    (Information only, no longer for sale)


    Manuals for Case Disk Harrow Model S and SA Wheel Type John Deere C-11 Series Inatergral Field Cultivator OM-N159188 Issue J8 John Deere 40 Series Corn Heads OM-H88388 Issue J4 John Deere 344, 443, 444, 642, 643, 644, 645, 842 and 843 Corn heads OM-H83265 Issue L1 John Deere 4000 and 4020 Tract Condition: Used to good condition, Price: You pay the sbipping, Posted 2017-11-29 in Kanawha IA.

    NEW STEEL FUEL TANKS FOR JOHN DEERE 4020 AND 4010 WITH ALL HDWE IN FACTORY BOX ALSO A COUPLE RECONDITIONED TANKS FOR SAME AND A 3020 Condition: stated, Price: 800NEW TANKS, Posted 2017-12-01 in mort MN.

    John Deere 4020 l.p. One of 435 made.tractor tuns and drives very well .no oil leaks.sheet metal fair tires fair ,some cracks Condition: Good, Price: 6500, Posted 2017-12-16 in Janesville WI.

    NEW JOHN DEERE STEEL FUEL TANKS THAT FIT 4010 AND 4020 in original box with all hardware also have two used tanks for same models and a used tank for 3020 price varies on used tanks Condition: stated, Price: 750nos, Posted 2017-12-18 in ISANTI MN.

    Looking for John Deere 4000 or 4020 late model parts rear engine side shields ,front side shields ,radiator shroud and platform with diff lock Condition: Nice, Price: ?, Posted 2017-12-19 in Uniondale PA.

    Important: Yesterday's Tractor Co. takes no responsibility for the accuracy, validity or availability of the items listed here nor do they receive any profit from the 3rd party transactions that may transpire from the use of this website. Yesterday's Tractor Co. does not sell tractors, nor do we collect money or broker transactions for others.




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