aFe Momentum Intake Replacement Air Filter w/ Pro DRY S Media (21-91107) 4006 True "Drop-in Fit" Requires No

True "Drop-in Fit" Requires No Modifications to Install

Minor modifications and adjustments are often necessary during installation

Special Comments: Cast iron rotor only 2009 Porsche 911 Engine: 3

All aFe POWER flat panel performance air filters are constructed with a full 360-degree polyurethane frame

and ECU tune

aFe Momentum Intake Replacement Air Filter w/ Pro DRY S Media (21-91107) 4006 True "Drop-in Fit" Requires NoMagnum Flow Pro Dry S Oval Tapered Gray Air Filter (21 91107) by aFe. This high flow Pro DRY S air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. With three layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil free" conical performance filter provides maximum convenience and easy maintenance with excellent