Description
Overview
The AF55308 Engine Air Filter is a heavy-duty radial seal filter engineered for Cummins mid-range industrial engines — the QSB6.7 and QSL9 Tier IV Final platforms found in Ford F560/F570 vocational trucks, Case IH loaders, and various construction equipment. This filter handles the extreme dust loads of construction sites, agricultural operations, and off-highway duty cycles while maintaining the precise airflow these turbocharged diesels require for clean, efficient combustion.
Key Features
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Cummins QSB6.7/QSL9 Compatible: Designed for Tier IV Final engines with high-efficiency turbochargers
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Radial Seal Design: Positive sealing under high vibration — no dust leaks at the filter housing
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Heavy-Duty Media: Deep pleat synthetic/cellulose blend with enhanced dust-holding capacity
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Multi-Brand Coverage: Fits Ford vocational trucks, Case IH equipment, and various industrial applications
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OEM Cross-Reference: Replaces AF55308, PA31003, P633483, WA10808
Compatibility Table
| Equipment |
Engine |
Year Range |
| Ford F560 / F570 Trucks |
Cummins QSB6.7 / QSL9 |
2012-2013 |
| Case IH 1221F Loader |
Cummins QSB6.7 |
Various |
| Other Cummins QSB6.7/QSL9 Equipment |
QSB6.7 / QSL9 Tier IV |
Verify by Part Number |
Specifications
| Spec |
Value |
| Part Number |
AF55308, PA31003, P633483, WA10808 |
| Filter Type |
Radial Seal (Engine Air) |
| Media |
Synthetic/Cellulose Blend — Deep Pleat |
| Outer Diameter |
~12.5 inches |
| Length |
~18 inches |
| Service Interval |
Per OEM service schedule (typically 500-1,000 hours) |
Why iFJF?
- ISO 5011 tested for filtration efficiency and dust capacity
- Radial seal integrity verified on every filter — no bypass leakage
- Competitive pricing vs Fleetguard and Cummins OEM filters
- US inventory for fast delivery to your shop or job site
FAQ
Q: Will this fit my Ford F650 with the Cummins ISB?
A: The AF55308 is designed for the QSB6.7/QSL9 industrial engine configuration used in F560/F570 vocational trucks. The F650 may use a different air filter housing. Verify by measuring your existing filter or checking the part number on the old filter.
Q: How do I know when to replace this radial seal air filter?
A: Most Cummins-powered equipment has a restriction indicator on the air filter housing. Replace when the indicator shows red (typically 25 inches H2O restriction). Never clean and reuse a radial seal filter — the media is damaged by compressed air.
Q: Can I use this on a marine QSB6.7 application?
A: Verify your marine engine's air filter housing. Marine applications often use different filtration configurations due to salt spray and humidity. Check your current filter's part number before ordering.
