The John Deere GX85 tractor primary engine air filter part number found is RE164839. Filter dimensions found include Outer diameter: 4.12 in / 105 mm; Inner diameter: 2.5 in / 64 mm. Service guidance is to check the air filter every 250 hours.
Primary air filterRE164839
Filter sizeOuter diameter: 4.12 in / 105 mm
Engine power13 hp
Service intervalCheck every 250 hours
John Deere GX85 Air Filter Specs
Primary air filter part number
RE164839
Secondary / safety air filter
AN403919
Pre-filter
LG272403S
Air filter size
Outer diameter: 4.12 in / 105 mm; Inner diameter: 2.5 in / 64 mm
Outer diameter
4.12 in / 105 mm
Inner diameter
2.5 in / 64 mm
Replacement interval
Check every 250 hours
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine model
Briggs & Stratton 28M707
Engine horsepower
13 hp
Engine displacement
28.4 cu in (0.47 L)
John Deere GX85 Air Filter Charts
Air filter dimensions
Outer diameter
4.12 in
Inner diameter
2.5 in
Engine horsepower
This model
13 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
28.4 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
Air filter service interval
This model
250 hr
Average
100 hr
Low
50 hr
High
200 hr
John Deere GX85 Air Filter FAQ
What air filter does the John Deere GX85 use?
The primary engine air filter part number found for the John Deere GX85 is RE164839.
What size is the John Deere GX85 air filter?
The air filter dimensions found for the John Deere GX85 are Outer diameter: 4.12 in / 105 mm; Inner 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 GX85 air filter be checked or replaced?
The service guidance found for the John Deere GX85 is to check the air filter every 250 hours. That is longer than the reference average of 100 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 GX85?
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 GX85 air filter page?
Engine specs found for the John Deere GX85 include 13 hp, 28.4 cu in (0.47 L). Those specs help identify the tractor class, but the air filter should still be matched by part number RE164839.
Should I order the John Deere GX85 air filter by size or part number?
The part number RE164839 matters more than size alone on the John Deere GX85. The listed dimensions helps confirm the filter looks physically consistent.
What should I confirm before buying a John Deere GX85 air filter?
For the John Deere GX85, confirm RE164839 against John Deere parts information and use the listed dimensions of Outer diameter: 4.12 in / 105 mm; Inner 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.
