Quick answer:
The John Deere 6M 140 tractor primary engine air filter part number found is AL172780. Filter dimensions found include Inner diameter: 4.28 in / 109 mm.
Primary air filterAL172780
Filter sizeInner diameter: 4.28 in / 109 mm
Engine power138.1 hp
John Deere 6M 140 Air Filter Specs
| Primary air filter part number | AL172780 |
|---|---|
| Secondary / safety air filter | AN403919 |
| Air filter size | Inner diameter: 4.28 in / 109 mm |
| Inner diameter | 4.28 in / 109 mm |
| Number of air filter elements | 2 elements (primary, secondary) |
| Engine horsepower | 138.1 hp |
| Engine displacement | 274.6 cu in (4.5 L) |
John Deere 6M 140 Air Filter Charts
Air filter dimensions
Engine horsepower
Engine displacement
John Deere 6M 140 Air Filter FAQ
| What air filter does the John Deere 6M 140 use? | The primary engine air filter part number found for the John Deere 6M 140 is AL172780. |
|---|---|
| What size is the John Deere 6M 140 air filter? | The air filter dimensions found for the John Deere 6M 140 are Inner diameter: 4.28 in / 109 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 6M 140? | This page lists 2 elements (primary, secondary). That means the safety element should be treated separately from the outer primary air filter. |
| Why include engine specs on a John Deere 6M 140 air filter page? | Engine specs found for the John Deere 6M 140 include 138.1 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 AL172780. |
| Should I order the John Deere 6M 140 air filter by size or part number? | The part number AL172780 matters more than size alone on the John Deere 6M 140. The listed dimensions helps confirm the filter looks physically consistent. |
| What should I confirm before buying a John Deere 6M 140 air filter? | For the John Deere 6M 140, confirm AL172780 against John Deere parts information and use the listed dimensions of Inner diameter: 4.28 in / 109 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.





