K&N’s lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. Simply remove the disposable air filter and replace it with a K&N; there is NEVER any cutting or fitting required. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

Product Specifications

Product Style: Round Tapered Universal Air Filter
Base Outside Diameter: 6.75 in (171 mm)
Flange Inside Diameter: 2.75 in (70 mm)
Flange Length: 0.75 in (19 mm)
Flange Type: Centered
Height: 3.25 in (83 mm)
Top Outside Diameter: 5.875 in (149 mm)
Top Style: Metal
Top Material/Finish: None
Filter Re-Oiling Amount: 0.69 oz (20 ml)
Inner Wire: No

Applications: 

BMW 316CI 1.8L L4 - 115BHP 2002-04
BMW 316CI 1.9L L4 - 115BHP 2005
BMW 316I 1.8L L4 - 115BHP 2002-04
BMW 316I 1.9L L4 - 115BHP 2005
BMW 316TI 1.8L L4 - w/valvetronic 2002
BMW 316TI 1.8L L4 - Compact 2003-04
BMW 318CI 2.0L L4 - 143BHP 2001-05
BMW 318I 2.0L L4 - 143BHP 2001-05
BMW 318TI 2.0L L4 - w/valvetronic 2001
BMW 318TI 2.0L L4 - Compact 2003-04