K&N Replacement Air Filter BMW F/I CARS 1978-91

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. 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.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1975-1976	BMW	3.0Si	Base
1984-1985	BMW	318i	Base
1980-1983	BMW	320i	Base
1984-1985	BMW	325e	Base
1982-1985	BMW	528e	Base
1979-1981	BMW	528i	Base
1977-1978	BMW	530i	Base
1983-1984	BMW	533i	Base
1985-1987	BMW	535i	Base
1988	BMW	535is	Base
1978-1984	BMW	633CSi	Base
1985-1989	BMW	635CSi	Base
1978-1984	BMW	733i	Base
1985-1987	BMW	735i	Base
1988-1991	BMW	M3	Base