AFE BMW N55 Magnum Pro Dry S Air Filter (M135i/M2/M235i/335i/435i)

Constructed with 100% polyurethane on all four sides, the "oil-free" OE replacement performance filter will outflow the stock filter for improved horsepower and torque. The Pro DRY S air filter uses three layers of progressively finer mesh cotton gauze media to provide maximum airflow for the best performance results. Washable and reusable for multiple cleaning cycles, the tall, open, evenly spaced pleats provide excellent dust holding capacity for a longer service cycle between cleanings. An integrated urethane bump seal ensures a tight, no-leak seal over the life of the filter.

Pro DRY S Media: 

This filter features a 3-layer progressive media to provide increased flow with excellent filtration. The progressive layering of media allows the filter to flow at high levels even when dirty. The Pro DRY S filter media is 99.2% efficient. The Pro DRY S filter requires no oils and cleans with soap and water.

Rounded Open Pleats: 

aFe performance air filters use a rounded pleat design which produces a more useable filter surface area for more flow and greater dust holding capacity.

Progressive Bump Seal:

This pliable sealing surface conforms to even the most uneven filter housing. This design eliminates the use of gaskets or sealants. The soft urethane construction always goes back to its original form so you will never compress the bump seal. This makes for a perfect filter fit and sealing surface every time.

Full Urethane Housing: 

aFe performance air filters are constructed using full 360-degree urethane frames. This construction allows for a proper OE-style fit with excellent filter strength.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.