aFe MagnumFLOW Air Filters OER PDS A/F PDS BMW 5/6/7-Ser 77-89 L6M3 88-91 L4-2.3L - afe31-10048 import_2022_03_21_012537 The PERRIN inlet hose is

The PERRIN inlet hose is perfectly smooth on the inside and has a significantly larger internal diameter than the OEM part

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aFe MagnumFLOW Air Filters OER PDS A/F PDS BMW 5/6/7-Ser 77-89 L6M3 88-91 L4-2.3L - afe31-10048 import_2022_03_21_012537 The PERRIN inlet hose isConstructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper filter for improved horsepower and torque. Multiple layers of progressively finer mesh gauze media provides maximum convenience and easy maintenance. Washable and reusable for multiple cleaning cycles, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings.