| Feature | Specification |
| Part Number | 39903281 |
| Brand | Ingersoll Rand (Genuine OEM) |
| Component Type | Primary Intake Air Filter |
| Compatible Models | UP6 15, UP6 20, UP6 25, UP6 30 (15-30 HP Series) |
| Filtration Rating | 3 Microns (Nominal) |
| Outer Diameter | Approx. 6.25 in (158.7 mm) |
| Length/Height | Approx. 13.50 in (342.9 mm) |
| Seal Type | Integrated Gasket for Airtight Fit |
| Recommended Change | Every 2,000 Hours (or more frequent in dusty environments) |