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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

  • 4020 steering stuck - Hello. I'm helping my neighbor breath life back into his 4020 that his Dad bought new in 1965? Serial number is:SNT213R093831R Not sure what all that serial number means but I believe it tells me at least that it's a 1965 maybe? Tractor hasn't been run for a long time. Trying to get the steering freed up. Steering wheel would not move at all when I first started. Now 2 weeks later after spraying penetration oil and trying to get steering wheel to move, ...
  • 4020 clutch shaft pilot bearing - Son is putting the new clutch in his 1965 4020 Syncro shift. Behind the pilot bearing in the crankshaft is a fiber looking washer. What is it for? The clutch came with a new pilot bearing but not the washer. Thanks, Richard
  • 4020 brake valve - Working on a 4020 for a friend. One of the plungers on the brake valve is froze. How big a deal is it to rebuild that unit? If it's froze will I be able to clean it up to work? Does anyone over reconditioned or worst case do we have get new? Thanks
  • 4020 Powershift - Question on a 4020 Powershift, can the shift lever cover be removed from the spool valve housing to replace the control lever seals without removing the valve housing from the tractor? Looks like there might be enough room to disconnect the links to me, but not sure.
  • 4020 low oil pressure - Friend has a early (round manifold) 4020 diesel with low oil pressure, like 10 lbs. Supposedly have gone through the oil pump. Put a new gauge and oil line to the gauge. Been years since I've worked on 4020s. Do they have a way do adjust the pressure? What could cause this?


  • Recent Ads


    1970 John Deere 4020.Dual remotes.Runs well.Tight shifting. Condition: Good , Price: 15,500, Posted 2023-01-07 by Dave , in Little Falls NY.

    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)


    Wanted JD cast double stack front weight for 4020 part no .A44360R Condition: good, Price: fair, Posted 2022-05-10 in coggon IA.

    9 bolt dual hubs came off John Deere 4020. 3 3/8 axle. No bolts for the wheels, one is two u bolt the other is three bolt. Condition: Good , Price: 400.00, Posted 2022-05-18 in St Johns MI.

    Single Front Wheel with good tri rib tire,fits John Deere 60-4020 . Condition: good useable , Price: 250.00, Posted 2022-06-21 in Alvaton KY.

    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.

    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 ... $18.00
    Water Pump - For tractor models 3010, 3020, 4000, 4010, 4020 All Diesel without AC. Replaces casting numbers R263[...] 101903 ... $100.00

    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 ... $70.00
    4020 Hood Ornament
    Hood Ornament - For tractor models 1010, 2010, 2510, 2520, 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620, 5010, 502[...] 108412 ... $30.00
    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 ... $152.00
    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 Drive Train

    4020 Transmission Filter
    Transmission Filter - Transmission oil filter. Filter element, cartridge type. Replaces AR28271, AR75601. For tractor mode[...] 110864 ... $15.45

    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 ... $457.91
    4020 Alternator
    Alternator - 12 volt, 72 amp. For tractor models (5200 1974-77 with 404 dsl), (5400 1974-77 with 531 dsl), 5420, [...] 110572 ... $110.00
    4020 Coil, 6V
    Coil, 6V - Distributor Coil, 6 volt. Delco Remy equipped. For tractor models B, M, 40, 50 (after 5021479), 60LP[...] 105281 ... $20.00
    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 ... $127.00
    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 ... $142.00
    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#[...] 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 ... $32.30
    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 ... $95.90
    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 ... $25.85
    4020 Starter Solenoid
    Starter Solenoid - Delco Starter Solenoid Assembly, flange mount, services starters 1107879 or 1107577 on 1010, 2010 ga[...] 105675 ... $15.50

    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 ... $30.00
    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 ... $45.00
    4020 Fuel Injector
    Fuel Injector - Nozzle, Injector. Pencil-type injector For tractor models 840, 940, 1020, 1030, 1040, 1129, 1139, 11[...] 113965 ... $29.00
    4020 Fuel Pump
    Fuel Pump - Fuel transfer pump, similar to original equipment manufacturer, cannot be repaired. Diesel tractors:[...] 140647 ... $38.00
    4020 Fuel Pump
    Fuel Pump - This fuel pump is for diesel tractors: 830, 930, 1020, 1520, 2020, 2030, 2040, 2240, 2440, 2510, 252[...] 112524 ... $28.00
    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 ... $31.00
    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 ... $15.91
    Light Switch, 4 position - 6 terminal, uses knob R46092. For tractor models (2350 with sound guard cab), (2520 from SN# 22001 a[...] 121802 ... $20.70
    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 ... $16.00
    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 ... $320.00

    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 ... $85.00
    Side Screen - Side grill panel, 17 x 19-3/4. For tractors: 4000, 4010, 4020. Two (2) used per tractor. Sold indivi[...] 101934 ... $75.00

    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 ... $55.90
    Steering Wheel - 16" diameter, 7/8" splined hub, smooth finish, like original. For tractor models 1010, 2010, 2510, 3[...] 101447 ... $40.00
    Steering Wheel Cap - This 2 legged deer, correct cap for many covered steering wheels on JD models from 1968-2000. Fits a[...] 101453 ... $35.00
    Steering Wheel Cap, Black Face - For tractor models: 1020, (820 3-cyl), 1520, 2020, 2510, 2520, 3020, 4000, 4020, 4320, 4520, 4620, 5[...] 101457 ... $50.00

    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 ... $44.00

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





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