The John Deere 4066R tractor primary engine air filter part number found is AT171853. Filter dimensions found include Height: 13.66 in / 347 mm; Outer diameter: 6.48 in / 164 mm; Inner diameter: 3.58 in / 91 mm.
Primary air filterAT171853
Filter height13.66 in / 347 mm
Engine power65 hp
John Deere 4066R Air Filter Specs
Primary air filter part number
AT171853
Secondary / safety air filter
AN403919
Pre-filter
M96846
Air filter size
Height: 13.66 in / 347 mm; Outer diameter: 6.48 in / 164 mm; Inner diameter: 3.58 in / 91 mm
Filter height
13.66 in / 347 mm
Outer diameter
6.48 in / 164 mm
Inner diameter
3.58 in / 91 mm
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
65 hp
Engine displacement
128.1 cu in (2.1 L)
John Deere 4066R Air Filter Charts
Air filter dimensions
Height
13.66 in
Outer diameter
6.48 in
Inner diameter
3.58 in
Engine horsepower
This model
65 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
128.1 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
John Deere 4066R Air Filter FAQ
What air filter does the John Deere 4066R use?
The primary engine air filter part number found for the John Deere 4066R is AT171853.
What size is the John Deere 4066R air filter?
The air filter dimensions found for the John Deere 4066R are Height: 13.66 in / 347 mm; Outer diameter: 6.48 in / 164 mm; Inner diameter: 3.58 in / 91 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 4066R?
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 4066R air filter page?
For the John Deere 4066R, the engine specs found are 65 hp, 128.1 cu in (2.1 L). This is useful context when comparing similar models, but not a substitute for checking the filter number AT171853.
Should I order the John Deere 4066R air filter by size or part number?
The part number AT171853 matters more than size alone on the John Deere 4066R. The listed dimensions helps confirm the filter looks physically consistent.
What should I confirm before buying a John Deere 4066R air filter?
For the John Deere 4066R, confirm AT171853 against John Deere parts information and use the listed dimensions of Height: 13.66 in / 347 mm; Outer diameter: 6.48 in / 164 mm; Inner diameter: 3.58 in / 91 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.
