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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 ... $139.84

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 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 ... $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, [...] 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 ... $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 ... $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

Cat II Top Link - For tractor models 2510, 2520, 3020, 4000, 4020 (To S#24999) 4030, 4230. Uses F2680R Cat I Ball End [...] AR34208 ... $197.73

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 ... $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 Turbo Questions - Hello, Several questions for those who have installed &/or who are running turbo chargers on their 4020 diesels: 1/ Comp. ratio - Anyone running a turbo with aftermarket "high compression" pistons? (ex. Reliance's 17.65:1 pistons) 2/ Boost - What numbers are you seeing? What turbo are you running? Any other mods. done to the unit like the inj. pump turned up, exhaust, etc.? 3/ Fuel consumption - What are your numbers? Please provide details if possible such as l ...
  • 4020 oil in radiator - Greetings! I had posted this inquiry in tractor talk was suggested to post for John Deere experts! 4020 serial #76000. Oil in the radiator. I am a truck/diesel mechanic so am aware of oil cooler and etc. I was told the head gasket could cause oil in coolant? The head gasket is defintely leaking and we are going after it too. Can the oil for rockers leak to the coolant at head gasket on a 4020? also could it be the gasket under cooler leaking as It appears that could also cause issue? Cooler is a ...
  • 4020 powershift hydraulic filter question - Ok so I have about completed plumbing for my allied 695 loader on my 1976 4020 powershift. My joystick/spool valve is mounted on my loader and hard plumbed to my loader. I tapped into power under my brake pedals and installed a quick connect, the only thing left is to install my return line. I am either going to put a "t" in the line between my 2 filter covers or use a port on the filter cover. My question is kind of silly but if I buy a ported filter cover or drill and tap/weld fitting which fi ...
  • Fuel in the oil 4020 John Deere - I recently bought a 4020. After I got it home and ran it for about 30 minutes it started leaking fuel from the tach below the injector pump. Is there suppose to be fuel getting to that part? I got a rubber gasket from the John Deere dealer and it quit leaking there. Then I got to thinking more about it and checked the oil again and it was very thin and smelled like diesel. Where do I go from here? Thanks in advance!
  • 1967 4020 water pump question - I was trying to search on here and couldn't figure out how, im sure its detailed out in a previous post. I was adjusting the tension on my alternator the other day and casually reach in and gave my fan a shake and felt a little slop in it. My water pump is not currently leaking but I am guessing if I can feel a little slop in the fan it wont be long until that bearing gets bad enough it will start to leak? so I might as well cut it off at the pass? I don't mind removing the pump an ...


  • Recent Ads


    Wanted: John deere double step for 3020-4020 standard.It bolts to left frame rail Condition: good, Price: ?, Posted 2017-06-25 by Ray Stem, in Phillipsburg NJ.

    1966 John Deere 4020 Levi Power fwa MW turbo kit Condition: Good, Price: 15000, Posted 2017-06-28 by Mike, in IL.

    1965 JOHN DEERE 4020 Diesel Pedal Tractor & Matching Pull Behind Trailer. Minor Scratches on Tractor And Trailer - 400 Condition: good, Price: 400.00, Posted 2017-07-13 by SBrogden, in Knoxville TN.

    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)


    Original John Deere block heater for 4020 . Condition: NOS, or working used, Price: reasonable, Posted 2017-02-28 in Alvaton KY.

    Wrap around front weights for a John Deere 2010-4020. 2 front slabs and 2 side brackets, off a 4020. Condition: used, Price: 150, Posted 2017-03-01 in Oglesby OK.

    John Deere wide front end assembly. One is under a 4020, one is under a 4010. Both complete less one hub. Price is each. Condition: Good, Price: 850, Posted 2017-03-01 in Fulton MS.

    M&W turbo set-up for John Deere 4000, 4010, 4020 diesel tractors. Rebuilt turbo. Nice condition. Can ship. Call for details. Posted 2017-03-14 in Postville IA.

    M&W fan shroud for John Deere 4000, 4010, 4020 diesel tractors. Great condition. Can ship. Call for details. Posted 2017-03-14 in Postville

    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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