Quick answer:
The John Deere 8R 440 tractor primary engine air filter part number found is RE164839. Filter dimensions found include Height: 12.5 in / 318 mm; Outer diameter: 8.5 in / 216 mm; Inner diameter: 4.5 in / 114 mm. Service guidance is to check the air filter every 250 hours.
Primary air filterRE164839
Filter height12.5 in / 318 mm
Engine power440 hp
Service intervalCheck every 250 hours
John Deere 8R 440 Air Filter Specs
| Primary air filter part number | RE164839 |
|---|---|
| Air filter size | Height: 12.5 in / 318 mm; Outer diameter: 8.5 in / 216 mm; Inner diameter: 4.5 in / 114 mm |
| Filter height | 12.5 in / 318 mm |
| Outer diameter | 8.5 in / 216 mm |
| Inner diameter | 4.5 in / 114 mm |
| Replacement interval | Check every 250 hours |
| Number of air filter elements | 1 element (primary) |
| Engine horsepower | 440 hp |
| Engine displacement | 549.2 cu in (9 L) |
John Deere 8R 440 Air Filter Charts
Air filter dimensions
Engine horsepower
Engine displacement
Air filter service interval
John Deere 8R 440 Air Filter FAQ
| What air filter does the John Deere 8R 440 use? | The primary engine air filter part number found for the John Deere 8R 440 is RE164839. |
|---|---|
| What size is the John Deere 8R 440 air filter? | The air filter dimensions found for the John Deere 8R 440 are Height: 12.5 in / 318 mm; Outer diameter: 8.5 in / 216 mm; Inner diameter: 4.5 in / 114 mm. Use these dimensions as a fit check, but treat the part number as the main match. |
| How often should the John Deere 8R 440 air filter be checked or replaced? | The service guidance found for the John Deere 8R 440 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 8R 440? | This page confirms 1 element (primary). No separate safety or pre-filter part number was found for this model, so inspect the actual air-cleaner housing before assuming it uses only one piece. |
| Why include engine specs on a John Deere 8R 440 air filter page? | The engine data kept for the John Deere 8R 440 is 440 hp, 549.2 cu in (9 L). Use it as supporting context only; the actual filter match is still driven by the air-cleaner housing and part number RE164839. |
| Should I order the John Deere 8R 440 air filter by size or part number? | The part number RE164839 matters more than size alone on the John Deere 8R 440. The listed dimensions helps confirm the filter looks physically consistent. |
| What should I confirm before buying a John Deere 8R 440 air filter? | For the John Deere 8R 440, confirm RE164839 against John Deere parts information and use the listed dimensions of Height: 12.5 in / 318 mm; Outer diameter: 8.5 in / 216 mm; Inner diameter: 4.5 in / 114 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.

