Ramair Performance Foam Induction Kit for BMW E39 5 Series

The Ramair Performance Foam Induction Kit for BMW E39 5 Series (520i & 523i) replaces the restrictive OEM airbox with a free-flowing foam intake to unlock smoother airflow, sharper throttle response and a richer induction note. Using Ramair’s dual-layer foam and a rigid T304 stainless support cage, the system delivers near-unrestricted flow while maintaining the filtration levels essential for long engine life. A cold-air feed and full fitting hardware ensure an OEM-like installation and easy servicing with the Ramair CK-003 cleaning kit.

Key Features

• Dual-layer high-flow foam filter for increased airflow and quicker throttle response

• T304 stainless steel cage maintains filter shape and stability under load

• Cold-air feed ducting supplies fresh air for consistent intake temps

• Direct OEM airbox replacement for improved drivability and sound

• Complete fitting kit included: clips, brackets, bolts and step-by-step instructions

• Easy maintenance with Ramair CK-003 filter cleaning kit

• Single-user lifetime warranty against manufacturing defects

Compatibility

• BMW 5 Series (E39) – 520i, 523i
  Saloon and Touring petrol models.
  (If you’re unsure on fitment, contact us with your VIN to confirm.)

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.