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SKU:
ZZ3F07490
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AT20728 Inner Outer Air Filter Kit AE31724 Fit John Deere 2240 2135 2440 401B
$81.19
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$81.19
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$81.19
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
Inner Outer Air Filter Kit for John Deere
This Inner Outer Air Filter Kit, with OEM cross-reference numbers AT20728 and AE31724, is a dual-stage filtration set that replaces both the primary outer filter and the secondary inner safety filter. It helps maintain clean intake air for smoother engine operation and longer component life.
Overview
This Inner Outer Air Filter Kit for John Deere models 2240, 2135, 2440, and 401B delivers dependable engine protection. The AT20728 and AE31724 cross-reference numbers confirm a ready-to-install replacement set for your tractor or industrial machine.
Built For Performance
- Two filters in one kit for complete protection of the intake system
- Outer filter captures coarse debris while inner filter traps fine particles
- Durable media withstands vibration and temperature extremes
- OEM-equivalent sizing ensures proper seal against the housing
- Matches AT20728 and AE31724 specifications for a correct replacement
Fits These Machines
- for John Deere 2240
- for John Deere 2135
- for John Deere 2440
- for John Deere 401B
On-The-Job Use
- Replace filters during scheduled service on agricultural tractors
- Use in heavy tillage or harvesting operations with high dust levels
- Install when the existing filter shows visible dirt accumulation or damage
- Maintain engine performance in loader or backhoe applications
Specs At A Glance
| Part Number(s) | AT20728, AE31724 |
| Filter Type | Inner and outer air filter kit |
| Configuration | Dual-stage |
Good To Know
Q: Will this kit fit all serial numbers of the listed models? A: Fitment can vary by serial number, so always verify your machine's air filter housing dimensions against the AT20728 and AE31724 specs before ordering.
Q: What is the difference between the inner and outer filter? A: The outer filter catches large debris and is the primary filter, while the inner safety filter traps finer dust particles that pass through, providing backup protection during maintenance.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.