Quick answer:
The John Deere GT225 tractor primary engine air filter part number found is AT183661. Filter dimensions found include Height: 3.5 in / 89 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 2.5 in / 64 mm.
Primary air filterAT183661
Filter height3.5 in / 89 mm
John Deere GT225 Air Filter Specs
| Primary air filter part number | AT183661 |
|---|---|
| Pre-filter | M148207 |
| Air filter size | Height: 3.5 in / 89 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 2.5 in / 64 mm |
| Filter height | 3.5 in / 89 mm |
| Outer diameter | 6.5 in / 165 mm |
| Inner diameter | 2.5 in / 64 mm |
| Number of air filter elements | 2 elements (primary, pre-filter) |
John Deere GT225 Air Filter Charts
Air filter dimensions
John Deere GT225 Air Filter FAQ
| What air filter does the John Deere GT225 use? | The primary engine air filter part number found for the John Deere GT225 is AT183661. |
|---|---|
| What size is the John Deere GT225 air filter? | The air filter dimensions found for the John Deere GT225 are Height: 3.5 in / 89 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 2.5 in / 64 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 GT225? | This page lists 2 elements (primary, pre-filter). The pre-filter is separate from the main paper element and should not be confused with the primary filter number. |
| Should I order the John Deere GT225 air filter by size or part number? | For the John Deere GT225, use AT183661 as the main buying number and use the dimensions value of Height: 3.5 in / 89 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 2.5 in / 64 mm only as a secondary fit check. |
| What should I confirm before buying a John Deere GT225 air filter? | For the John Deere GT225, confirm AT183661 against John Deere parts information and use the listed dimensions of Height: 3.5 in / 89 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 2.5 in / 64 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.

