The John Deere 4020 tractor primary engine air filter part number found is AT33363.
Primary air filterAT33363
Engine power83.8 hp
John Deere 4020 Air Filter Specs
Primary air filter part number
AT33363
Secondary / safety air filter
AM100000
Pre-filter
MIU11513
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
83.8 hp
Engine displacement
402.8 cu in (6.6 L)
John Deere 4020 Air Filter Charts
Engine horsepower
This model
83.8 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
402.8 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
John Deere 4020 Air Filter FAQ
What air filter does the John Deere 4020 use?
The primary engine air filter part number found for the John Deere 4020 is AT33363.
How many air filter elements are listed for the John Deere 4020?
This page lists a primary filter, a safety filter and a pre-filter: 3 elements (primary, secondary, pre-filter). Replace each only with the matching part number for that position.
Why include engine specs on a John Deere 4020 air filter page?
For the John Deere 4020, the engine specs found are 83.8 hp, 402.8 cu in (6.6 L). This is useful context when comparing similar models, but not a substitute for checking the filter number AT33363.
Should I order the John Deere 4020 air filter by size or part number?
The important buying value for the John Deere 4020 is AT33363. Use the parts manual or dealer lookup if your machine has a different engine or air-cleaner housing.
What should I confirm before buying a John Deere 4020 air filter?
For the John Deere 4020, confirm AT33363 against the parts manual or official John Deere lookup because air-cleaner parts can change by serial range.
Official information note
Air filter fit can change by engine, serial number, production year and air-cleaner housing. Check the operator manual, parts manual and official deere.com website before buying or fitting an air filter.
