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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 ... $20.18
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
Side Hood Molding - Left - 37" in length with 5 mounting studs (Fasteners NOT included). Green lettering, yellow background. In[...] AR28049 ... $51.27
4020 Syncro-Range and Power Shift Decal Set
Syncro-Range and Power Shift Decal Set - Set covers those decals that are different than the normally used set when used for the Syncro-Range[...] 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 ... $66.17
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 ... $79.85
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 ... $89.00
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 ... $21.95

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 ... $29.96
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 a[...] AR50781 ... $33.75
4020 Fuel Injector
Fuel Injector - Nozzle, Injector. Pencil-type injector For tractor models 840, 940, 1020, 1030, 1040, 1129, 1139, 11[...] AR89564 ... $38.87
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: 1020, 1520, 2020, 2030, 2040, 2240, 2440, 2510, 2520, 2630, 2[...] TP-RE42211B ... $25.49
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 ... $26.25
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 ... $21.98
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

4020 Cat II Top Link
Cat II Top Link - For tractor models 2510, 2520, 3020, 4000, 4020 (To S#24999) 4030, 4230.[...] 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 ... $27.56
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 ... $130.95

John Deere 4020 Sheet Metal / Body Parts

4020 Battery Box, LH
Battery Box, LH - For tractor models 2520, (3020 SN# 123000 and up), (4000 Row crop SN# 201000 and up), (4020 Row crop[...] AR40674 ... $80.37
4020 Battery Box, RH
Battery Box, RH - For tractor models 2520, (3020 SN# 123000 and up), (4000 Row crop SN# 201000 and up), (4020 Row crop[...] 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 ... $32.76

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 loader hydraulics - Loader hydraulics are acting up again on this 68 4020. Brakes and power steering is great. Most of the time the loader stops working at different places! Sometimes it stops lifting or then tipping the bucket. This happens regardless of clutch engaged or disengaged. I know about starvation issue with clutch. This loader uses the left scv's. Tractor doesn't make any strange hydraulic noises. Tractor is a syncro range
  • 3020 - 4020 pencil injectors - The Stanadyne part #20494 is the replacement for AR 50781 which I thought was for side console tractors, but AR69289 were what I sold and used for many years for the early 3020-4020s with the pencil injectors. So now the dealers seem to sell only the 20494 injector so is that the right one and will it work fine??
  • 4020 oil bath to dry element. - I have a '65 JD 4020 with a precleaner stack that is oil bath. Is there a way to change it to a dry element? I know you can find a used dry cleaner assembly form all states Ag for $550 bucks plus frieght. I've heard you can take the guts outta a oil bath and replace it with dry element guts but I'm not sure if that is true. Also looked into Donaldson Co. for newer dry filter assemblies. All plastic, not tough enough to support a 48 inch steal pre cleaner pipe. Any thoughts and help i ...
  • Fixing Up 4020 Stopler Cab - Recently I had to replace my old family 4020 (it was time to retire it/fix it up a bit/put it in the family museum) and I just picked up another 4020 that has a Stolper cab on it. From doing a bit of reading it seems like the most common thing to do is take the cab off, but I thought it might actually be something that I like if some of the guts inside worked. So, I wanted to research fixing it up a bit. At this point I know that none of the fans/heater/wiper works (or possibly isn't hook ...
  • 1968 4020 Value - I'm looking at a 1968 4020 that's up for auction in a couple days and I'm wondering what a fair purchase price would be. It's a power shift and seems to run and drive good. I only drove it when it was cold so not sure if something could act up after its up to operating temp or pulling it hard. It has 16.9-38 tires that will probably need replaced if a guy wanted to use the tractor in the field. The tractor has 2 remotes and the 3 point hitch is complete and operational. The only major problem I ...


  • Recent Ads


    Complete M&W turbo set-up for John Deere 4000, 4010, 4020 tractors. Came off of a running tractor & is in great condition & ready to go. Exhaust comes out of original hole in hood. Can ship. Posted 2016-12-19 by Not given, in Postville IA.

    Wanted: WANTED John Deere 4020 M&W 2 piece exhaust manifold in working condition. Condition: working, Posted 2016-12-30 by Marcus Overholtzer, in St Ignatius MT.

    J.D. 4020 power shift diesel runs and shifts good Condition: good, Price: 7800., Posted 2017-01-02 by Dave, in Bicknell IN.

    John Deere row crop fenders & mounting brackets came off 4020 will fit older models Condition: 1 straight & 1 a little rough , Price: 700, Posted 2017-01-04 by Greg, in Morgantown IN.

    4020 John Deere, 1970, side console, synchro, 3 pt, front and rear weights, 18.4 x 34 rear tires 70%, wide front, less than 2000 hours on out of frame, less than 8000 total. Quit farming. Condition: Very good, Price: 14000, Posted 2017-01-07 by Roger, in Ottumwa IA.

    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)


    I have an Egging Cab off a 1969 John Deere 4020. All Parts are there to complete cab. Front windshield is good, two side windows good. Other glass is there but cracked. Open to any offers. Condition: used, Price: Make Offer, Posted 2016-06-09 in Paxico KS.

    Selling a John Deere PTO belt pulley assembly #F34584R off a 4020. No breaks, welds or leaks. No broken mount tabs. Perfect pulley. Ready for work. Condition: very good , Price: 275.00, Posted 2016-06-14 in fennimore WI.

    For sale a 1969 jd 4020 side console. Tractor has dual hyd, jd wfe, diff. lock, 3 pt. 18.4 / 34 rear tires @ 85 % runs & drives great. call / text 608 732 0551. Condition: very good, Price: 12, 500 , Posted 2016-06-23 in not given WI.

    M&W turbo set ups for John Deere 3010,3020,4000,4010,4020 diesel tractors. Can ship. Call 563-379-1456 for details. Posted 2016-06-30 in Postville IA.

    JOHN DEERE 4020, 1965, diesel, synchro, 3pt, still in the original paint, hours unknown. Condition: Good, clean, running tractor, Price: 7750, Posted 2016-07-02 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.




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