The John Deere Z520A mower primary engine air filter part number found is AT20728. Filter dimensions found include Height: 5.25 in / 133 mm; Outer diameter: 2.5 in / 64 mm. Service guidance is to replace the air filter every 100 hours.
Primary air filterAT20728
Filter height5.25 in / 133 mm
Engine power25 hp
Service intervalReplace every 100 hours
John Deere Z520A Air Filter Specs
Primary air filter part number
AT20728
Secondary / safety air filter
AN403919
Pre-filter
MIU13120
Air filter size
Height: 5.25 in / 133 mm; Outer diameter: 2.5 in / 64 mm
Filter height
5.25 in / 133 mm
Outer diameter
2.5 in / 64 mm
Replacement interval
Replace every 100 hours
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
25 hp
Engine displacement
44.2 cu in (0.72 L)
John Deere Z520A Air Filter Charts
Air filter dimensions
Height
5.25 in
Outer diameter
2.5 in
Engine horsepower
This model
25 hp
Average
24 hp
Low
12 hp
High
40 hp
Engine displacement
This model
44.2 cu in
Average
50 cu in
Low
25 cu in
High
80 cu in
Air filter service interval
This model
100 hr
Average
50 hr
Low
25 hr
High
100 hr
John Deere Z520A Air Filter FAQ
What air filter does the John Deere Z520A use?
The primary engine air filter part number found for the John Deere Z520A is AT20728.
What size is the John Deere Z520A air filter?
The air filter dimensions found for the John Deere Z520A are Height: 5.25 in / 133 mm; Outer diameter: 2.5 in / 64 mm. Use these dimensions as a fit check, but treat the part number as the main match.
How often should the John Deere Z520A air filter be checked or replaced?
The service guidance found for the John Deere Z520A is to replace the air filter every 100 hours. That is longer than the reference average of 50 hours for this class, so still shorten the interval when the machine is used in heavy dust.
How many air filter elements are listed for the John Deere Z520A?
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 Z520A air filter page?
Engine specs found for the John Deere Z520A include 25 hp, 44.2 cu in (0.72 L). Those specs help identify the mower class, but the air filter should still be matched by part number AT20728.
Should I order the John Deere Z520A air filter by size or part number?
For the John Deere Z520A, use AT20728 as the main buying number and use the dimensions value of Height: 5.25 in / 133 mm; Outer diameter: 2.5 in / 64 mm only as a secondary fit check.
What should I confirm before buying a John Deere Z520A air filter?
For the John Deere Z520A, confirm AT20728 against John Deere parts information and use the listed dimensions of Height: 5.25 in / 133 mm; Outer diameter: 2.5 in / 64 mm as a physical check.
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.
