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The BMW 330i and K&N's Air Filter just seem to go together. The BMW 330i is a German-engineered vehicle respected for its design, quality and durability, and the K&N Air Filter is equally respected as the innovator of high quality longlasting Air Filters. K&N Air Filters are the best known example of washable and reusable air filter technology. Not only is the reusable Air Filter better for the environment because it generates less environmental waste since it is not discarded when it is replaced, but the cotton media the filter is made of allows better air flow and filters more effectively than traditional paper filters. The BMW 330i K&N Air Filter also utilizes oil to even further enhance its filtering capability. Better air flow means your engine breathes better, which can translate into power and torque gains, as well as increased fuel efficiency. In addition, the superior filtration provided by the K&N Air Filter will protect your engine to prevent any damage or compromised performance that could result from introducing contaminants into the system. You bought a BMW 330i because of its well-deserved reputation for superior engineering and performance, as well as quality design that performs reliably for the long term and a K&N Air Filter is the logical choice for your vehicle. Take advantage of the K&N Air Filter's better air flow and superior filtration capabilities to complement your BMW 330i and even enhance its performance. Auto Parts Network (APN) has the BMW 330i K&N Air Filter you need. We provide the very best customer service and have knowledgeable experts available to help you choose the right parts for your vehicle. APN provides a great value with competitive prices and the best selection of parts available!