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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
Water Pump - For tractor models 3010, 3020, 4000, 4010, 4020 All Diesel without AC. Replaces casting numbers R263[...] AR45332 ... $110.33

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 ... $138.69
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 ... $45.07

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 (5200 1974-77 with 404 dsl), (5400 1974-77 with 531 dsl), 5420, [...] 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 ... $99.14
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 ... $34.13

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 ... $265.60
4020 Carburetor, Rebuilt
Carburetor, Rebuilt - Fits 3010, 3020, 4010, 4020 - replacement for OEM 12510, 12879, 13320, 13429, 13430. Add $200.00 cor[...] 1534-CARB ... $265.60
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 ... $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 ... $20.22
Light Switch, 4 position - 6 terminal, uses knob R46092. For tractor models (2350 with sound guard cab), (2520 from SN# 22001 a[...] AR48724 ... $24.05
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, 3-1/2 dished, smooth finish. Tractors: 820 German[...] 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 ... $64.17

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 clutch update - I know some donít do updates, but I just wanted to let everyone know that replied with suggestions on why I could not get my 69 4020 in gear was it was stuck. I am good at small mechanical things such as starters and other things but did not want to chance anything because this the time of year I get real busy with doing jobs for people that I needed it done right so my local JD Dealer fixed it. The mechanic that did it i have known for many years and he said everything looked good but sugges ...
  • 4020 clutch update - I know some donít do updates, but I just wanted to let everyone know that replied with suggestions on why I could not get my 69 4020 in gear was it was stuck. I am good at small mechanical things such as starters and other things but did not want to chance anything because this the time of year I get real busy with doing jobs for people that I needed it done right so my local JD Dealer fixed it. The mechanic that did it i have known for many years and he said everything looked good but sugges ...
  • Headlight installation on 4020 - I'm updating the wiring to the lights on my 4020. I'm about to reinstall the lights but wanted to make sure I'm doing the right things to get a good ground path back to the tractor. I'm going to wire brush the bolt on the back of the headlight. I've already used a sanding flapper wheel on the back of the big round washers. I've sanded the inside (front or dish) side of the small, oblong washer as well as the back side where the nut will make contact. How much do I need to sand the rec ...
  • JD 4020 Injector Pump Timing - I noticed my DB injector pump starting leaking today after having the 4020 out for the first time this year. The old timer down the road said I should get it in time position before pulling it as it makes install a lot easier. Anyone mind walking me through timing these? Much appreciated.
  • 1969 4020 clutch - Went to move tractor and when pushed clutch in in the last 2 inches of travel felt like a little bump pop something and now will not go into any gear, will go into park but not gears. Have had tractor since 97 no issues until this. Please advise what might be the problem. Thanks


  • Recent Ads


    Wanted: Need front mounting bracket for John Deere 148 Loader to fit 3010-4020 tractor. Condition: good useable, Price: reasonable, Posted 2019-04-26 by John Brawner, in Alvaton KY.

    John Deere 4020 flat top fenders,comes with single headlights. Condition: Good, Price: 300.00, Posted 2019-05-19 by James Lieb, in Fithian IL.

    Wanted: Looking the Double stack starter weight and the two sides for a 4020 John Deere Thanks 910-986-5431 Im in NC Condition: Good, Posted 2019-05-23 by Keith Patterson, in carthage NC.

    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)


    NEW FRONT KNEES FOR JOHN DERRE HIGH CROPS 2510 thru 4020 these are better than deere made ....... made by firm in iowa we dont have many left Condition: new, Price: 1000pr, Posted 2018-11-14 in bethel MN.

    Wanted to buy mounting brackets to put a hiniker 1300 cab on a 4020 Posted 2018-11-20 in belmont WI.

    Swartz wide for 3020 or 4020 John Deere has 8 bolt front hubs, very good condition,450 obo also have a belly mount John Deere sickle bar mower for the same tractor good condition no longer need it hate to scrap it 300obo best to call can get pictures on request Condition: good, Price: varies, Posted 2018-12-02 in Gilman IL.

    I have a set of two M&W air intake elbow pipes used for 4020 M&W turbo kits. Pipes only. Condition: good, Price: 75, Posted 2018-12-30 in IN.

    Deere and Farmall Precision Tractors. #1 and 2 As 630 High Crop, 4020, Unstyled and Styled B, BWH40, Unstyled D, G High Crop, Waterloo Boy, F-20, Regular, MV, MD, M, H with planter Condition: New, Price: 1, Posted 2018-12-31 in DeWitt 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.




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