Rugged Ridge Air Cleaner Assembly 14inThis 14 inch round chrome air cleaner assembly from Rugged Ridge fits most 4 barrel carburetors. Our dry panel design never needs oiling; which prevents your mass airflow sensor from being damaged by excess oil! Rugged Ridge performance high flow filters are made from a synthetic fabric and not cotton. Cotton filters are made porous and must be oiled to trap dirt and debris. But that oil reduces air flow through the filter and it can become easily