The John Deere 3720 tractor primary engine air filter part number found is RE68048. Cross-reference filters include WIX 46489; Baldwin RS3988; Donaldson P822768; FRAM CA10180. Filter dimensions found include Outer diameter: 5 in / 127 mm; Inner diameter: 3.19 in / 81 mm.
Primary air filterRE68048
Cross-referenceWIX 46489
Filter sizeOuter diameter: 5 in / 127 mm
Engine power44 hp
John Deere 3720 Air Filter Specs
Primary air filter part number
RE68048
Secondary / safety air filter
AT75035
Pre-filter
M143275
Cross-reference filters
WIX 46489; Baldwin RS3988; Donaldson P822768; FRAM CA10180
Air filter size
Outer diameter: 5 in / 127 mm; Inner diameter: 3.19 in / 81 mm
Outer diameter
5 in / 127 mm
Inner diameter
3.19 in / 81 mm
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
44 hp
Engine displacement
91.6 cu in (1.5 L)
John Deere 3720 Air Filter Charts
Air filter dimensions
Outer diameter
5 in
Inner diameter
3.19 in
Engine horsepower
This model
44 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
91.6 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
John Deere 3720 Air Filter FAQ
What air filter does the John Deere 3720 use?
The primary engine air filter part number found for the John Deere 3720 is RE68048.
What air filter cross-references fit the John Deere 3720?
Cross-reference filters found for the John Deere 3720 include WIX 46489; Baldwin RS3988; Donaldson P822768; FRAM CA10180.
Can I use an aftermarket air filter on the John Deere 3720?
The John Deere 3720 has 4 cross-reference filters listed, starting with WIX 46489. For aftermarket buying, compare brand part number, dimensions, seal shape and air-cleaner housing fit.
What size is the John Deere 3720 air filter?
The air filter dimensions found for the John Deere 3720 are Outer diameter: 5 in / 127 mm; Inner diameter: 3.19 in / 81 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 3720?
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 3720 air filter page?
The engine data kept for the John Deere 3720 is 44 hp, 91.6 cu in (1.5 L). Use it as supporting context only; the actual filter match is still driven by the air-cleaner housing and part number RE68048.
Should I order the John Deere 3720 air filter by size or part number?
Use RE68048 as the main match for the John Deere 3720. The cross-reference list helps find aftermarket options, while the measured dimensions helps avoid ordering a filter that does not seat correctly.
What should I confirm before buying a John Deere 3720 air filter?
For the John Deere 3720, confirm RE68048, at least one listed cross-reference, and the dimensions value of Outer diameter: 5 in / 127 mm; Inner diameter: 3.19 in / 81 mm against the actual filter before ordering.
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.
