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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 ... $72.78

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 ... $22.34
Water Pump - For tractor models 3010, 3020, 4000, 4010, 4020 All Diesel without AC. Replaces casting numbers R263[...] AR45332 ... $107.58

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 ... $33.75
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 ... $145.59
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 ... $45.33

John Deere 4020 Electrical System

4020 12 Volt Conversion Kit with Bosch Starter
12 Volt Conversion Kit with Bosch Starter - This 12 volt conversion kit is for a 24 volt system with a Bosch starter. Converts 24 Volt systems t[...] TS-8000 ... $772.86
4020 Alternator
Alternator - 12 volt, 72 amp. For tractor models (5200 1974-77 with 404 dsl), (5400 1974-77 with 531 dsl), 5420, [...] ADR0133 ... $82.47
4020 Coil, 6V
Coil, 6V - Distributor Coil, 6 volt. Delco Remy equipped. For tractor models B, M, 40, 50(after 5021479), 60LP,[...] D4PE12029AA ... $19.61
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 ... $88.51
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 ... $98.64
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 ... $25.74
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 ... $41.81
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 ... $26.84

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 - This rebuilt carburetor is a direct replacement for OEM numbers matching: USX20, USX21, USX30, USX31[...] 1532-CARB ... $290.50
4020 Carburetor, Rebuilt
Carburetor, Rebuilt - This rebuilt carburetor is a direct replacement for OEM numbers matching: 12510, 12879, 13320, 13429[...] 1534-CARB ... $290.50
4020 Fuel Injector
Fuel Injector - For tractor models JD 3010, 3020, 4010, 4020 model tractors with injector #20494. Replaces AR39811, [...] AR50781 ... $34.77
4020 Fuel Injector
Fuel Injector - Nozzle, Injector. Pencil-type injector For tractor models 840, 940, 1020, 1030, 1040, 1129, 1139, 11[...] AR89564 ... $34.77
4020 Fuel Pump
Fuel Pump - Fuel transfer pump, similar to original equipment manufacturer, cannot be repaired. Diesel tractors:[...] TP-RE42211A ... $84.25
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 ... $29.15
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 ... $26.12
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 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 Safety Light Amber
Safety Light Amber - 12 volt amber safety light, 4-1/4 inch diameter, 3/8 inch diameter by 5/8 inch mounting stud. Does n[...] S.61357 ... $18.75
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 ... $53.74

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 ... $120.23

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 ... $43.40
Steering Wheel Cap - This 2 legged deer, correct cap for many covered steering wheels on JD models from 1968-2000. Fits a[...] AL155227 ... $42.78
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

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



Recent Topics

  • 4020 diesel lighting - I'm working on this for a friend - it has serial number 148770 R and has the 4 headlight set up. PC859 shows an extra light (item 19) for 4 headlight units and no extra light for 2 headlight units. the extra light is mounted on the top of the left fender and has amber lenses on front and back sides. Is this correct or is there an error in the wiring diagrams in the manual? There is a tail light at the rear of the seat so what is the purpose of an extra light on the top of the fender?

  • 1969 JD 4020 how to run loader plus disc single hydraul - Just got my 4020 home yesterday, running like a champ. It has a 148 loader that is running off of the rear hydraulic connection. I want to get a set of disc for it and am trying to figure out if I need to remove the loader so I can have hydraulics for my disc. I guess this will be an issue any time I want to run anything off the hydraulics other than the loader. Thoughts?
  • ''69 4020 synchro hyd issues - Have a '69 syncro 4020 and i think i have a leak in the rockshaft control valve or rockshaft housing. Any ideas where to start? what components in the rockshaft control valve or housing are known to leak? I have read on here some folks take a plug out of the back and can see oil leaking inside when the 3pt is up and down-any ideas what might cause that internal leak-what are common sources of internal leaks? Also, I need to replace the front pump, what is the best way to take it out, from ...
  • 4020 fuel issue - Hello all, first post here, we have a old 4020 that wouldn't start last summer, we ignored it and used other equipment for haying. We look at it this year and transfer pump is gone, no output at all. Replace transfer pump, get all air out of filters, fuel right to injector pump. Nothing to the injecters, cracked all lines and nothing anywhere. I guess theoretically both pumps could go but what are the chances. The transfer pump was definitely gone. Not sure where to go from her ...
  • What to Look For on a 1969 JD 4020 w/loader - I am new to the forums. I live in Eastern NC and we just bought a small farm. We don't have a tractor and have decided to try and go the used tractor route to avoid debt. We have about 30 acres of cultivated land. I can fix most anything and there are a ton of local farmers that I can get help from, so I am not so worried about a used tractor. I settled on a 4020 because I read a lot of things about them and there are so many different models, I thought I would try and focus on a few models ...


  • Recent Ads


    Wanted: I am looking for rear wheel weights for a John Deere 4020 Let me know what you have and a price. Looking for several sets.The closer to York PA the better. Thanks Posted 2020-06-10 by Phil, in York PA.

    JOHN DEERE 4020 hicrop powershift 3 pt rad rods exc metal and paint powershift gone thru new top end on motor california tractor good tag tomato spacers on rear hubs 12volt excellent tractor photos available trucking anywhere reasonably Condition: very good, Price: 15000bo, Posted 2020-06-14 by F AND D FARMS, in MORT MN.

    JOHN DEERE 4020 hi crop 1971 full restoration new rice rears fenders all correct lites 3 pt rad rods etc drawbar syncro good tag photos available shipping anywhere Condition: expo or better, Price: 27500, Posted 2020-07-02 by DICK, in bethel MN.

    JOHN DEERE 4020 hi crop powershift 1970 fenders all correct lite 3 pt drawbar rad rods exc rear rice tires double stack front wts rear wts new main hyd pump and injection pump just installed good tag photos shipping anywhere Condition: expo or better, Price: 30,000bo, Posted 2020-07-02 by DICK, in bethel MN.

    SELLING duplicates from collectionJOHN DEERE HIGH CROPS 2510 thru 4020 all california tractors some restored others mechanically perfect all good metal and paint & tags shipping anywhere including canada Condition: excellent, Price: email, Posted 2020-07-02 by DICK, in bethel MN.

    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)


    1967 John deere 4020 diesel turbocharged 1000h on oh new brakes new rear tires 16.9 38 Condition: Very nice , Price: 10500, Posted 2020-02-16 in Portsmouth IA.

    M-W Turbo for 72 JD 4020 late model with oil pan fan manifold Condition: excellant, Posted 2020-02-16 in coggon IA.

    Jd cat.2 nonadjustable cast quickhitch push down levers R-41860 for 4020-4430 Condition: excellant, Posted 2020-03-05 in coggon IA.

    JOHN DEERE FRONT AXLE KNEES FOR NEW GENERATION HIGH CROPS 2510 thru 4020 made by ED BEEM COMPANY Condition: new, Price: 1000pr, Posted 2020-03-15 in bethel MN.

    1969 4020 John Deere L.P. Side console with the power shift transmission. Only 10 to 20 made. Runs good. Good back tires. Showing 7000 hours. Pretty straight except the front of the hood. Dual hydraulic remotes. 3 point with top link. Condition: Good, Price: 12500, Posted 2020-03-19 in Wolfforth TX.

    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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