aFe Momentum Replacement Air Filter PDS 3-1/2F x 5B x 4-1/2T (Inv.) clearance you still have the amenities

you still have the amenities like a 1/8 NPT gauge port and 1:1 ratio boost reference port for forced induction applications

This pliable sealing surface conforms to even the most uneven filter housing

Any enthusiast running boost

Absolute zero is the pressure measurement when all the pressure exerted by the atmosphere has been removed

The HF6-4 is one of Vossen's Hybrid Forged 6-lug designs

aFe Momentum Replacement Air Filter PDS 3-1/2F x 5B x 4-1/2T (Inv.) clearance you still have the amenitiesWith 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 airflow. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Pliable polyurethane flange with integrated bumps insures