K&N drop-in performance air filter for Audi A6/S6 C4 4.2i, V8 / BMW 7 E32, 5 E34 – 33-2573

The K&N performance air filter consists of two layers of wire mesh with a layer of cotton gauze between them, treated with a special oil. This makes the filter less restrictive to airflow, which increases engine power, while the oiled cotton also filters the air better. Because the filter is made of cotton, it never needs replacing: simply wash it with a special cleaner, let it dry and re-oil it with air filter oil.

Product details:
– improved airflow increases engine power and torque
– washable filter
– easy fitting (replaces the original)
– low maintenance costs, cleaning due at 80,000 km

Warranty:
– 1.5 million kilometres or 10 years

OE number or other part number:
– 13721707021

Notes:
– if your vehicle is not on the list, send us an enquiry with your car’s details (model, year, engine details).
– you can find the filter cleaning kit here.
– so that we can check the filter is right for your vehicle, please give your vehicle details when ordering