Quick answer:
The John Deere 2251 tractor primary engine air filter part number found is RE46310. Cross-reference filters include WIX 46703; Baldwin PA3869; Donaldson P607365; FRAM CA7444; more listed below. 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 1, 800 hours.
Primary air filterRE46310
Cross-referenceWIX 46703
Filter sizeOuter diameter: 9 in / 230 mm
Engine power25 hp
Service intervalReplace every 1,800 hours
John Deere 2251 Air Filter Specs
| Primary air filter part number | RE46310 |
|---|---|
| Secondary / safety air filter | T340572 |
| Pre-filter | M96846 |
| Cross-reference filters | WIX 46703; Baldwin PA3869; Donaldson P607365; FRAM CA7444; Fleetguard AF25570 |
| 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 1, 800 hours |
| Number of air filter elements | 3 elements (primary, secondary, pre-filter) |
| Engine horsepower | 25 hp |
| Engine displacement | 67.1 cu in (1.1 L) |
John Deere 2251 Air Filter Charts
Air filter dimensions
Engine horsepower
Engine displacement
Air filter service interval
John Deere 2251 Air Filter FAQ
| What air filter does the John Deere 2251 use? | The primary engine air filter part number found for the John Deere 2251 is RE46310. |
|---|---|
| What air filter cross-references fit the John Deere 2251? | Cross-reference filters found for the John Deere 2251 include WIX 46703; Baldwin PA3869; Donaldson P607365; FRAM CA7444; Fleetguard AF25570. |
| Can I use an aftermarket air filter on the John Deere 2251? | The John Deere 2251 has 5 cross-reference filters listed, starting with WIX 46703. For aftermarket buying, compare brand part number, dimensions, seal shape and air-cleaner housing fit. |
| What size is the John Deere 2251 air filter? | The air filter dimensions found for the John Deere 2251 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 2251 air filter be checked or replaced? | The service guidance found for the John Deere 2251 is to replace the air filter every 1, 800 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 2251? | 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 2251 air filter page? | The engine data kept for the John Deere 2251 is 25 hp, 67.1 cu in (1.1 L). Use it as supporting context only; the actual filter match is still driven by the air-cleaner housing and part number RE46310. |
| Should I order the John Deere 2251 air filter by size or part number? | Use RE46310 as the main match for the John Deere 2251. The cross-reference list helps find aftermarket options, while the measured dimensions helps avoid ordering a filter that does not seat correctly. |
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.

