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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
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
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 ... $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

  • JOHN DEERE 4020 HYDRAULIC ISSUES - i have a 1966 John Deere 4020 PS diesel the tractro starts easy and runs well. the hydraulics work in D only. if i select L or LD no hydraulics at all but in D the 3 point raises and lowers quickly. the FEL works if i manipulate the levers in a specific sequence (eg scv lever forward + loader lever back = loader raises , scv lever back + loader lever forward = loader lowers). Power steering and brakes perform flawless no trouble whatsoever. trans temp rises after 3 hours or so of brushhogging w ...
  • Most nimble handling - 4020, 4230, 4040? - Read posts all the time about how nimble handling the JD 4020 tractor is. Many state how a 4020 is a big tractor that handles like a little tractor. My question is are the successor replacement models by JD for the 4020 like the 4230 and 4040 equally as nimble handling? Or does the 4020 even outrank them in nimbleness? Lets limit the discussion to open station style tractors only so the newer cabs is not a factor in this answer.
  • 4020 john deere street value price in ND - Hi. I was trying to sell my dads 4020 syncro with wide front and hiniker cab this summer for 5000$ no luck. Engine is in great shape tires are fair. I am not a john deere man but based on the rear serial number it looks like a 64 model. It has 2 hyd and no 3 point. I posted it on craigslist and bisman online with pictures. Granted it is not show room condition and it has a minor radiator leak which was fixed with stop leak. But still I thought 5000 was fair for a 4020. Guess I was wrong?
  • John Deere 4020 LP Fuel Strainer Coil - Hello! Does anyone know if there is a way to test the fuel strainer coil on a John Deere 4020 LP? The part where the wires are soldered has melted, and the strainer does not click when I turn the key on. I think it is part number AR52766. Also, does the coil magnet have to be a certain strength, or could I just slap a strong fridge magnet on there to get me by until this issue is fixed? Thank you!
  • 1971 4020 Diesel starting issue - Idiot lights on dash seem to work fine. But the starter does not turn over with the key. Jumped the starter solenoid with the key on and it turns over great but no start. Thinking now that maybe the shutoff on the injector pump maybe also has no power. I found 2 used relays under the seat, so the previous owner must have had some issues also. Manuals are on the way. Where can I start checking first for problems? Starter switch, circuit breakers,,,,,? Thank you.


  • Recent Ads


    Wanted: Looking for a John Deere 6 row front mount cultivater with 4020 brackets, thanks Condition: Good, Price: Going, Posted 2017-08-23 by Joe illinois, in Seneca IL.

    John deere rops canopy enclouser, glass windshield,swingging door, and the rest is canvas, from 4020 . looks like a factory item, anybody ever see one Condition: good, Price: call, Posted 2017-08-23 by LLOYD, in cuba city WI.

    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)


    M&W Aluminum big oil pan for John Deere 4020. Just removed from tractor. No cracks or breaks. Condition: Very Good, Price: 2000, Posted 2017-04-06 in Cobb WI.

    M&W turbo set up for John Deere 4000, 4010, 4020 diesel tractors. Excellent condition. Freshly rebuilt turbo. Can ship. Call for details. Posted 2017-04-09 in Postville IA.

    M&W fan shroud for John Deere 4000, 4010 and 4020 tractors. Excellent condition. Can ship. Call for details. Posted 2017-04-09 in Postville IA.

    Very good 24 volt starter for 4020 diesel john deere, its been to starter shop and ready to go Condition: very good, Price: call, Posted 2017-04-19 in leachville AR.

    1967 John Deere 4020 diesel tractor for sale. Fully loaded has 2 Hyd remotes, 3pt, PTO, and 38 rear rubber. Runs good but needs hydraulic lift pump replaced. Sheet metal is rough. Call for more info Condition: Running but needs some TLC, Price: 4500, Posted 2017-04-23 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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