Start a John Deere 4020 restoration by recording the tractor’s serial number and configuration, then use the matching Deere technical publication and parts catalog. There is no universal 4020 restoration parts list: the work—and whether major components need replacement—depends on the tractor’s condition and exact application.
Identify your 4020 before choosing manuals or parts
Record the tractor’s serial number before ordering anything. Also note the major configuration details that can affect publication and parts application, and compare them with the information in the relevant Deere catalog. Deere’s catalog materials divide 4020 tractors at serial number 201,000:
- Serial number 200,999 and below: use the 4020 tractor catalog for this range: John Deere Parts Catalog: 4020 tractor, serial number 200,999 and below.
- Serial number 201,000 and above: use the separate 4000 and 4020 tractor catalog for this range: John Deere Parts Catalog: 4000 and 4020 tractors, serial number 201,000 and above.
Use the serial number and catalog application together; a model name alone does not establish which catalog range or part listing applies.
Choose the right Deere reference material
Use a technical publication for service procedures and diagnosis, and the applicable parts catalog to identify components and illustrations. Deere describes its technical publications as covering diagnostic, test, adjustment, theory-of-operation, and repair information. Its manuals resource provides access to manuals and parts catalogs: John Deere Manuals and Training.
#1 Best Overall
- Set of 6 Aftermarket Replacement Fuel Line to Injector Boots
- Fits John Deere Combine Models: 6600 and 7700
- Forage Harvester Models: 5200, And 5400
- Industrial / Construction models: 500, 500A, 500B, 500C, 510, 600, 644, 644A, 644B, 646, 646B, 690,
- Replaces Part Number: R34765 (X 6)
Before relying on a publication, confirm its edition and application against your tractor’s serial number and configuration. A parts catalog helps identify a component; it is not a substitute for the service instructions needed to inspect, adjust, or repair it.
Inspect the tractor before buying major parts
Build the repair plan from inspection findings rather than treating “restoration” as a fixed list of replacements. Record what works, what is worn or damaged, and what needs further diagnosis. Then use the appropriate service information to determine the next checks and obtain quotes where repair work or machining may be needed.
Rank #2
- Compatible Model: Fits for John Deere Tractor Models 1830 2030 2030OU 2035 2035EF 2040 2120 2130 2135 2240 2440 2510 2520 2630 2640 2840 3010 3120 3130 3135 4000 4010 4020 4030 4040 4230 4240 4240S 4320 4430 4455 4520 4620 4630 4640 4840 5010 5020 6030 700A 7020 7520 830 8430 8430T 8440 8630 8640
- Replacement Part Number: Hydraulic pump drive coupler halves replaces R34362. Hydraulic drive bushings replaces AR34098 AR49427 R45822. Drive pins replaces R34360 AT42312 AT42311 AT42308 R34362 AR34098 AR49427 R45822
- Efficient Solutions: Repair damaged couplings, extend the life of the equipment, and restore the normal operation of the equipment as soon as possible to improve efficiency
- Excellent Material: The use of high-quality materials, durable and reliable, corrosion resistance, can withstand high pressure and frequent use, can also be long-term stable operation under harsh conditions
- Easy to Install: Packages include Hydraulic Pump Drive Coupler Half x 2, Hydraulic Drive Bushing x4, Drive Pin x4. The design is simple, easy to install, fast and efficient maintenance and replacement
An engine overhaul is not automatically required because a tractor is being restored. Deere lists an engine overhaul kit with general fit information that includes the 4020, but that does not establish that every 4020 needs the kit or that it fits every configuration. The listing is a starting point, not a fitment decision: John Deere Shop: RG23427 Engine Overhaul Kit. Confirm the engine details, exact application, and need for overhaul before purchase.
Verify parts at the time you order
Even after finding a part in the matching catalog, verify its number with a Deere dealer before ordering. The catalog warns that part numbers were correct at publication and advises customers to check them with a dealer. This is especially useful when comparing an older catalog entry with a current or aftermarket listing: confirm both the number and the application for your tractor.
Rank #3
- Fitment: Compatible with John Deere 3010 3020 4000 4010 4020 2WD Row Crop and Utility Tractors. Replacment for RE62856
- High Quality: Made from high-quality materials, it offers excellent durability and opposition to wear and tear, ensuring long-term stable performance
- Increased Comfort: The extended step design provides a larger foothold, making it more comfortable for operators to get in and out of the tractor, especially when wearing work
- Package Includes: 1 x pc Step Extension Kit with hardware. Instruction is not included
- Installation: Easy to Install with no modification required
Plan the budget from the actual scope
There is no dependable, verified restoration-cost figure established here for a John Deere 4020. A useful estimate must be based on the individual tractor and the intended finish. Condition, repair scope, parts, machining, labor, and finish expectations all affect the total. Get inspection-based quotes for the work you cannot estimate confidently, and separate essential mechanical repairs from optional cosmetic work when setting priorities.
Quick Recap
Best Value
- 【DESIGNED TO REPLACE】 AMX1910120 - AR26994 - AR28048 - AR28048-49-Kit - AR28048-A - AR28049 - AR28049-A - G208430163 - HTAR28049 - JDS307 - R2533 - SHN20-0006 - WN-AR28048 - WN-AR28049 - WN-JDS307
- 【FITMENT MODELS】 Fits John Deere 1010 - 2010 - 3010 - 4010 - 4020 - 4320 - 4620 - 5010 - 5020 - 1020 - 2510 - 2520 - 3020 - 4000 - 7020 - 4520 - 2020
- 【AMERICAN OWNED & OPERATED】Fully owned and operated within the United States, our business is dedicated to contributing to local economies, supporting American jobs, and fostering community growth.
- 【QUALITY REPLACEMENT】Engineered for durability and performance, our parts meet or exceed OEM specifications. Ideal for construction and agriculture machinery, ensuring reliability and efficiency in tough working conditions.
- 【EASY INSTALLATION】Our parts are designed for a straightforward fit, making maintenance quick and simple, which helps reduce downtime and keep your equipment running smoothly.
Rank #4
- Compatible with John Deere Tractor(s) 4020
- Replaces John Deere OEM Number(s) JD417S
- Hood Decal Set
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