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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.

Recent Topics

  • John Deere 4020 slobbering/ wet stacking - Me and a buddy just did a complete overhaul on his 4020 and finally got it broke in on the dyno today. Tractor runs really good but seems to slobber out of 3, 5, and 6. Will this clear up after a while or do we need to make some adjustments? We also could only seem to get 85 horse out of her, could timing be an issue there? It has an entirely new rotating assembly, new cam, head was sent out and rebuilt along with the injection pump, and all new injectors.
  • 4020 Diesel question - Hello, My son uses the accelerator pedal on our '67 4020D quite a bit. Last fall it started sticking and we had to fiddle with the hand throttle and/or pull the accelerator up with our foot to get back down to an idle. Any thoughts on why that may be? I have heard the governor ring could be falling apart. But to take the pump off and have it rebuilt is an expensive proposition, so I thought I would see if there are any alternatives first. Thanks much!
  • 4020 Front Axle Lock Bolt - Grade 8? - Does anyone know where I can get a grade 8 adjustable front axle lock bolt for a 4020? JD Part number is B2694R. One of my tractors has them and they are brass colored ... look like grade 8. Replacing old hardware on the front end. Thanks. Forest
  • 4020 generator light functions backwards - I have a '65 4020 24V, positive ground,power shift tractor. I just purchased this tractor late last fall and put a new Brillman harness on it. I do not know if it was working before,but everything operates correctly except for the gen light. It appears to operate backwards. Key on,engine off, the light is out. Key on, engine idling,light is dim. As you speed up the engine the light gets brighter. The generator is charging and the more it charges, the brighter the light gets. The oil pressure lig ...
  • 4020 Oil Pan - Flywheel Housing Material Identification - Removed oil pan on 4020 today. Lots of what I am assuming is clutch material on the backside of it. In between where the flywheel housing mates with the front frame there is some white fiberglass/cotton matting material jammed up in that space. It is only on the left side. Does anyone know that that might be? It is pretty tight in there so I have not tried to clean it out yet. Couldn't find a depiction of it in the parts manual. Thanks.


    • Recent Ads


    1972 John Deere 4020 power shift.Dual remotes.Double stack front weight.6200 hrs. Fresh paint. Condition: Excellent , Price: 35000.0, Posted 2023-03-18 by Dave , in Little Falls NY.
    Wanted: Looking for the battery box that was mounted on the frame rails when there was a cab on a john deere 4020 4320 4620 etc thanks Joe Condition: good usuable, Price: going, Posted 2023-03-21 by joe ugolini, in seneca IL.
    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)


    JOHN DEERE 4020 HI CROP 1970 powershift fully restored rice tires fenders all lites 3pt drawbar rad rods front and rear wts new injection and front hyd pumps just installed good tag shippin help provided anywhere photos available Condition: excellent, Price: 25000bo, Posted 2022-06-28 in bethel MN.
    Bare cyl head for 4010JOHN DEERE .Cut for 4020 Valves.Made for Bendix injector.Bare head for late 4430/4040 . Rebuilt.never used. Condition: Used. Ask for details, Price: 150 FOR 4010 HEAD 350.00 FOR 4430 HEAD, Posted 2022-06-30 in New haven MO.
    Gas and Diesel Manifolds for John Deere 4020 tractors. Condition: Very Nice, Price: 125.00 ea,, Posted 2022-07-06 in Alvaton KY.
    Oil Pan for 4010-4020 John Deere tractors. Condition: Very Nice, Price: 150.00 ., Posted 2022-07-06 in Alvaton KY.
    John Deere 48 loader with brackets fits 3010,3020,4010,4020 and others.no breaks or repairs. Condition: good working condition, Price: 1650.00, Posted 2022-07-06 in Alvaton KY.
    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.


    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.[...] 178693 ... $83.00

    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[...] 125561 ... $22.50
    4020 Radiator Hose Lower
    		 Radiator Hose Lower - Hose, radiator lower. For tractors: 3010, 3020, 4000 less AC, 4010, 4020 less AC. For 3010, 4010[...] 114087 ... $16.00
    		Water Pump - For tractor models 3010, 3020, 4000, 4010, 4020 All Diesel without AC. Replaces casting numbers R263[...] 101903 ... $117.00

    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[...] 164905 ... $67.00
    4020 Hood Ornament
    		 Hood Ornament - For tractor models 1010, 2010, 2510, 2520, 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620, 5010, 502[...] 108412 ... $33.80
    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[...] 101968 ... $160.00
    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[...] 115031 ... $51.00

    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[...] 120547 ... $396.00
    4020 Alternator
    		 Alternator - 12 volt, 72 amp. For tractor models (5200 1974-77 with 404 dsl), (5400 1974-77 with 531 dsl), 5420, [...] 110572 ... $117.00
    4020 Coil, 6V
    		 Coil, 6V - Distributor Coil, 6 volt. Delco Remy equipped. For tractor models B, M, 40, 50 (after 5021479), 60LP[...] 105281 ... $15.70
    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[...] 105074 ... $133.90
    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 [...] 105075 ... $128.80
    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#[...] 121144 ... $16.05
    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[...] 121145 ... $31.80
    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[...] 121146 ... $80.00
    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, [...] 125703 ... $30.00
    4020 Starter Solenoid
    		 Starter Solenoid - Delco Starter Solenoid Assembly, flange mount, services starters 1107879 or 1107577 on 1010, 2010 ga[...] 105675 ... $19.80

    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: [...] 100743 ... $33.40
    		Carburetor, Rebuilt - This rebuilt carburetor is a direct replacement for OEM numbers matching: USX20, USX21, USX30, USX31[...] 1532-CARB ... $599.01
    		Carburetor, Rebuilt - This rebuilt carburetor is a direct replacement for OEM numbers matching: 12510, 12879, 13320, 13429[...] 203300 ... $510.01
    4020 Fuel Injector
    		 Fuel Injector - For tractor models JD 3010, 3020, 4010, 4020 model tractors. Verify stamped number before ordering: [...] 109653 ... $44.90
    4020 Fuel Injector
    		 Fuel Injector - Nozzle, Injector. Pencil-type injector For tractor models 840, 940, 1020, 1030, 1040, 1129, 1139, 11[...] 113965 ... $36.20
    4020 Fuel Pump
    		 Fuel Pump - Fuel transfer pump, similar to original equipment manufacturer, cannot be repaired. Diesel tractors:[...] 140647 ... $34.70
    4020 Fuel Pump
    		 Fuel Pump - This fuel pump is for diesel tractors: 830, 930, 1020, 1520, 2020, 2030, 2040, 2240, 2440, 2510, 252[...] 112524 ... $31.20
    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[...] 180105 ... $22.69
    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[...] 168690 ... $29.88

    John Deere 4020 Gauges

    4020 Tachometer Cable
    		 Tachometer Cable - 33" long. For tractor models 3010, 3020, 4010, 4020, 4320, 4520, 4620.[...] 159054 ... $25.20
    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.[...] 108063 ... $44.00

    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[...] 105319 ... $16.00
    		Light Switch, 4 position - 6 terminal, uses knob R46092. For tractor models (2350 with sound guard cab), (2520 from SN# 22001 a[...] 121802 ... $21.70
    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[...] 122128 ... $33.20
    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[...] 105346 ... $64.50

    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[...] 109348 ... $329.60

    John Deere 4020 Sheet Metal / Body Parts

    4020 Battery Box, RH
    		 Battery Box, RH - For tractor models 2520, (3020 serial number 123000 and up), (4000 Row crop serial number 201000 and[...] 104079 ... $81.00
    		Side Screen - Side grill panel, 17 x 19-3/4. For tractors: 4000, 4010, 4020. Two (2) used per tractor. Sold indivi[...] 101934 ... $74.00

    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[...] 113508 ... $57.00
    		Steering Wheel - 16" diameter, 7/8" splined hub, smooth finish, like original. For tractor models 1010, 2010, 2510, 3[...] 101447 ... $48.10
    		Steering Wheel Cap - This 2 legged deer, correct cap for many covered steering wheels on JD models from 1968-2000. Fits a[...] 101453 ... $60.00
    		Steering Wheel Cap, Black Face - For tractor models: 1020, (820 3-cyl), 1520, 2020, 2510, 2520, 3020, 4000, 4020, 4320, 4520, 4620, 5[...] 101457 ... $57.00

    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,[...] 102229 ... $43.30

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





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    Today's Featured Article - It Can't Be Done! - A Tractor Story - by Neil Campbell. I'll never forget the time back when I was a boy baling hay on our Farm in Big Rapid, Michigan. The most memorable event that took place was a trip up the steepest incline on the farm pulling an old New-Idea baler with a pony-motor for power and a haywagon. I had just talked my Dad into buying an old John Deere B with 6-speeds ahead and I was real proud of it, except it was a little smaller than the Case tractor that we normally ... [Read Article]

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