The John Deere 3420 tractor primary engine air filter part number found is AT311066. Filter dimensions found include Height: 20.5 in / 521 mm; Outer diameter: 12.06 in / 306 mm; Inner diameter: 7.75 in / 197 mm.
Primary air filterAT311066
Filter height20.5 in / 521 mm
Engine power24.5 hp
John Deere 3420 Air Filter Specs
Primary air filter part number
AT311066
Secondary / safety air filter
AN403919
Air filter size
Height: 20.5 in / 521 mm; Outer diameter: 12.06 in / 306 mm; Inner diameter: 7.75 in / 197 mm
Filter height
20.5 in / 521 mm
Outer diameter
12.06 in / 306 mm
Inner diameter
7.75 in / 197 mm
Number of air filter elements
2 elements (primary, secondary)
Engine horsepower
24.5 hp
Engine displacement
67.1 cu in (1.1 L)
John Deere 3420 Air Filter Charts
Air filter dimensions
Height
20.5 in
Outer diameter
12.06 in
Inner diameter
7.75 in
Engine horsepower
This model
24.5 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
67.1 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
John Deere 3420 Air Filter FAQ
What air filter does the John Deere 3420 use?
The primary engine air filter part number found for the John Deere 3420 is AT311066.
What size is the John Deere 3420 air filter?
The air filter dimensions found for the John Deere 3420 are Height: 20.5 in / 521 mm; Outer diameter: 12.06 in / 306 mm; Inner diameter: 7.75 in / 197 mm. Use these dimensions as a fit check, but treat the part number as the main match.
How many air filter elements are listed for the John Deere 3420?
This page lists 2 elements (primary, secondary). That means the safety element should be treated separately from the outer primary air filter.
Why include engine specs on a John Deere 3420 air filter page?
For the John Deere 3420, the engine specs found are 24.5 hp, 67.1 cu in (1.1 L). This is useful context when comparing similar models, but not a substitute for checking the filter number AT311066.
Should I order the John Deere 3420 air filter by size or part number?
Buy by AT311066 first for the John Deere 3420. The dimensions value is useful for checking an aftermarket listing before ordering.
What should I confirm before buying a John Deere 3420 air filter?
For the John Deere 3420, confirm AT311066 against John Deere parts information and use the listed dimensions of Height: 20.5 in / 521 mm; Outer diameter: 12.06 in / 306 mm; Inner diameter: 7.75 in / 197 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.
