The John Deere 4840 tractor primary engine air filter part number found is RE20250.
Primary air filterRE20250
Engine power180 hp
John Deere 4840 Air Filter Specs
Primary air filter part number
RE20250
Secondary / safety air filter
AN403919
Pre-filter
M143275
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
180 hp
Engine displacement
463.8 cu in (7.6 L)
John Deere 4840 Air Filter Charts
Engine horsepower
This model
180 hp
Average
35 hp
Low
18 hp
High
66 hp
Engine displacement
This model
463.8 cu in
Average
100 cu in
Low
50 cu in
High
180 cu in
John Deere 4840 Air Filter FAQ
What air filter does the John Deere 4840 use?
The primary engine air filter part number found for the John Deere 4840 is RE20250.
How many air filter elements are listed for the John Deere 4840?
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 4840 air filter page?
Engine specs found for the John Deere 4840 include 180 hp, 463.8 cu in (7.6 L). Those specs help identify the tractor class, but the air filter should still be matched by part number RE20250.
Should I order the John Deere 4840 air filter by size or part number?
The important buying value for the John Deere 4840 is RE20250. Use the parts manual or dealer lookup if your machine has a different engine or air-cleaner housing.
What should I confirm before buying a John Deere 4840 air filter?
For the John Deere 4840, confirm RE20250 against the parts manual or official John Deere lookup because air-cleaner parts can change by serial range.
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.
