K&N drop-in performance air filter for BMW 135i E8x, 335i E9x, 535i E60/E61, Z4 E89 35i – 33-2367

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 more free-flowing, which increases engine power, while the oiled gauze also cleans 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:
– 13717556961

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