K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: Compatible with 1990-2006 BMW (X3, Z4, 520i, 525i, 530i, Z3, 728i, 728iL, 323Ti, 523i, 528i, M3), 33-2070

Ultimate durability: 10 years or 1st 6 million kilometres of warranty performance ensures the vehicle life. So easy! DEVELOPED POWER: The latest state of the art filtration material provides up to 50 percent more air flow than a disposable paper filter to increase performance and acceleration. Clogged or dirty filters can reduce your vehicle's acceleration by up to 10 percent Easy installation: pre-oiled and ready for installation in your standard air filter box. One of the easiest and most cost-effective retrofits for your vehicle for fast performance gains. Save money: K&N high-flow exchange air filters will save you 250 euros over 10 years by avoiding standard disposable paper filters. In addition, the environment is protected. World-class protection: goes to the limit of engine protection by protecting your engine from harmful contaminants