Quick answer:
The John Deere 6120R tractor primary engine air filter part number found is RE46310. Filter dimensions found include Outer diameter: 9 in / 230 mm; Inner diameter: 5.8 in / 147 mm. Service guidance is to replace the air filter every 500 hours.
Primary air filterRE46310
Filter sizeOuter diameter: 9 in / 230 mm
Engine power120 hp
Service intervalReplace every 500 hours
John Deere 6120R Air Filter Specs
| Primary air filter part number | RE46310 |
|---|---|
| Secondary / safety air filter | AN403919 |
| Pre-filter | M96846 |
| Air filter size | Outer diameter: 9 in / 230 mm; Inner diameter: 5.8 in / 147 mm |
| Outer diameter | 9 in / 230 mm |
| Inner diameter | 5.8 in / 147 mm |
| Replacement interval | Replace every 500 hours |
| Number of air filter elements | 3 elements (primary, secondary, pre-filter) |
| Engine horsepower | 120 hp |
| Engine displacement | 274.6 cu in (4.5 L) |
John Deere 6120R Air Filter Charts
Air filter dimensions
Engine horsepower
Engine displacement
Air filter service interval
John Deere 6120R Air Filter FAQ
| What air filter does the John Deere 6120R use? | The primary engine air filter part number found for the John Deere 6120R is RE46310. |
|---|---|
| What size is the John Deere 6120R air filter? | The air filter dimensions found for the John Deere 6120R are Outer diameter: 9 in / 230 mm; Inner diameter: 5.8 in / 147 mm. Use these dimensions as a fit check, but treat the part number as the main match. |
| How often should the John Deere 6120R air filter be checked or replaced? | The service guidance found for the John Deere 6120R is to replace the air filter every 500 hours. That is longer than the reference average of 200 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 6120R? | 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 6120R air filter page? | Engine specs found for the John Deere 6120R include 120 hp, 274.6 cu in (4.5 L). Those specs help identify the tractor class, but the air filter should still be matched by part number RE46310. |
| Should I order the John Deere 6120R air filter by size or part number? | For the John Deere 6120R, use RE46310 as the main buying number and use the dimensions value of Outer diameter: 9 in / 230 mm; Inner diameter: 5.8 in / 147 mm only as a secondary fit check. |
| What should I confirm before buying a John Deere 6120R air filter? | For the John Deere 6120R, confirm RE46310 against John Deere parts information and use the listed dimensions of Outer diameter: 9 in / 230 mm; Inner diameter: 5.8 in / 147 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.

