This is a replacement panel filter for the BMW 3 series. For a full list of fitments see compatible list below. BMW 3 Series 316Ci 2002 2006 BMW 3 Series 316i 2002 2005 BMW 3 Series 316ti 2002 2005 BMW 3 Series 318Ci 2001 2007 BMW 3 Series 318i 2001 2005 BMW 3 Series 318ti 2001 -2004 Features High Performance, MAF Safe, twin layer, fully reticulated foam Fits in the OEM Airbox and replaces inefficient paper filter Easy to clean using our filter maintenance kit - CK-003 Stainless steel cage support structure Guaranteed surface area using high quality custom blended polymer What Does It Do? The Ramair Panel Filter range is made from twin core Ramair Aeriform foam and our stainless steel cage which is used in many of our tier 1 Motorsport applications for maximum strength. A rubber polymer surround gives a fantastic clean and smooth finish with longevity in mind. These filters are direct replacements for the OEM air filter in your car, making this filter easy