This filter has a larger surface area than stock filters because of deeper pleats, which improve airflow and trap more dust. The open, flat-panel design on top maximizes airflow without sacrificing protection on paved and semi-dusty roads.
Features:
The aFe superstock, inverted Pro 5R oiled air filter improves on the great airflow capabilities and necessary protection found in standard Pro 5R filters. Its inverted design showcases deeper pleats that increase the surface area, yielding a higher dust-holding capacity. The large opening in the flat panel at the top increases airflow; because this filter does not contain a narrow flange that connects directly to the intake tube, air flows more freely through the system. This filter performs well in paved-road driving conditions and is is designed for diesel Dodge Ram Pickups. Encased in expandable metal and epoxy-coated aluminum wire mesh, it provides flexibility necessary for diesel applications. The high strength-to-weight ratio accommodates maximum loads and helps to protect diesel engines.

Composed of 100-percent polyurethane on all sides, the filter withstands high engine temperatures. Five layers of progressively finer, medical-grade cotton gauze block 98.6 percent of dirt and grime from clogging your engine. These materials provide the highest-performance airflow and extended service intervals. This aFe air filter is washable and reusable; cleaning and re-oiling are recommended once every 25,000 to 30,000 miles.

Each aFe product undergoes extensive dyno and bench testing to measure airflow and maximize gains, which are represented in performance charts that highlight the airflow benefits of aFe models over stock models. As demonstrated by this performance chart, this aFe air filter offers a 90-percent increase in airflow, or gains of 313 cubic feet per minute (CFM), compared with the stock filter.
Note: Upgrading your stock air filter to a performance filter does not change the stock intake tract or emissions output of your exhaust system. Therefore, performance air filters - like this product from aFe - are considered street legal and compliant with emission standards in all states and in Canada.
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