This K&N intake kit is perfect for BMW 330 owners from 2001 - 2005 who want to enhance their car's performance. Whether you're cruising on the highway or looking for a bit more power during acceleration, this kit is for you. The kit includes a high - density polyethylene tube and a washable, reusable air filter. It can be installed in less than an hour, and under normal driving, you can go up to 100,000 miles before servicing the filter. Note that some parts may not be legal in California due to pollution control regulations.