The AF1811 is a primary axial‑seal air filter designed for heavy duty applications. It prevents airborne contaminants from entering the engine by filtering air from the outside inward (Outside → In). The axial seal ensures a tight fit and minimizes leaks.
Key Specifications:
| Parameter | Value |
|---|---|
| Overall Length / Height | 390.4 mm (≈ 15.37 in) |
| Outer Diameter (largest / max OD) | 178.1 mm (≈ 7.01 in) |
| Outer Diameter (smallest / min OD, if applicable) | ~ 154 mm (≈ 6.06 in) |
| Inner Diameter (largest / max ID) | 89.9 mm (≈ 3.54 in) |
| Inner Diameter (small opening, secondary ID) | ~ 17 mm |
| Flow Direction | Outside → In |
| Seal Type / Style | Axial seal |
| Media Type | Non‑flame resistant / standard filter media (not flame retardant) |
| Weight / Mass | ~ 1.48 kg (3.26 lbs) |




