aFe produces what we believe are the best air filters on the market. These drop-in panel filters are a direct replacement for your stock 6-cylinder E36/E46 3-Series, E39 5-Series, or Z3 panel filter. Next time you need to replace your filter, take a step forward to an aFe performance replacementFeatures
- Pliable progressive polyurethane seal
- 100% polyurethane construction
- Deepest pleats in the industry
- Minimal wicking
- Factory pre-oiled with non-surfactant containing refined oil
- Washable/reusable cotton gauze media
The Full Scoop...
- Tight seal without gaskets or sealants
- Withstands extreme engine temperatures for extended-service live
- Improved airflow, filtration, and dust-holding capacity
- Larger filtration area for more airflow
- Will not damage sensitive electronic sensors
- The last filter you will buy for your vehicle
The aFe high-performance, high flow OE air filter replaces the restrictive factory paper filters and lets your engine breathe better. Paper filters do a good job of keeping dirt out, but they get clogged easily and need to be replaced frequently. Foam filters get clogged easily, too. A premium cotton gauze filter like aFe's, however, allows more airflow and is washable and reusable. You can try a simple experiment to test this: Put a sheet of tissue paper up to your mouth and draw air through it. Now put a sheet of cotton gauze and feel the difference. Notice the difference when they each get a bit wet? That's a good demonstration of why aFe Performance Replacement Air Filters work so much better.
With aFe filters, the engine can breathe much more freely. Have you ever tried running when you had a cold? It's hard when you can't breathe well, and your car's engine is the same way. With a restrictive paper filter, your engine struggles to run at its best. When the filter is new and unclogged, it works okay, but when dirty, the engine has to struggle. Stock OE paper filters become clogged quickly.
aFe filters are designed to let the engine breathe better even as the filter gets dirty. The multiple layers of cotton gauze are sandwiched between two layers of epoxy-coated aluminum screen and pleated like a lamp shade. If you look at cotton gauze under a microscope you'll see it has tiny micro fibers branching out from the strands. When the gauze is oiled like aFe filters are, these fibrous strands attract dirt and dust particles. One or two layers would allow dirt and dust particles to pass through, therefore we stack multiple layers with progressively tighter mesh to catch progressively smaller particles - as small as 2 microns in size! The aluminum screen holds the layers in place and protects the cotton gauze.
aFe filters are designed differently than other cotton gauze filters. These have been engineered with the tallest pleats
that the factory air box will allow. There two reasons for this: 1) Taller pleats mean more filter material to hold the dirt, and 2) the pleats can be spaced out more to let more air through. aFe filters also have a different pleat geometry
than others. The rounded tips of the pleated allow the air to flow more efficiently around the tops of the pleats. Not only that, but they aren't tightly pinched, which means they let air flow through the tops and bottom of the pleats. These features allow aFe filters to breathe better.
These performance replacement filters by aFe use 100% engineering grade polyurethane
which is more flexible and will seal better in today's plastic and fiberglass factory air boxes. Urethane is used on all four sides of the filter, not just on the open ends, to ensure that they stand up over the life of your vehicle. The polyurethane also stands up to high engine temperatures and engine chemicals better that the plastomers that the factory filters use.
Another unique feature from aFe is the progressive bump seal. This flexible polyurethane bump seal is compressed tightly in the factory air box for a leak-proof seal even when the factory air box has uneven sealing surface. Being constructed of 100% polyurethane, the flanges and ridges guarantee excellent fit no matter how often you wash and reuse your aFe filter.
Made in the USANotice of Emissions Non-Compliance.
The intake system is part of a vehicle's emissions equipment. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. Unless noted above, this product is not legal for sale or use in California on any pollution controlled motor vehicle.
BMW Fitments: 3 Series
E36 (92-99) > 323ic
E36 (92-99) > 323is
E36 (92-99) > 325i
E36 (92-99) > 325ic
E36 (92-99) > 325is
E36 (92-99) > 328i
E36 (92-99) > 328ic
E36 (92-99) > 328is
E36 (92-99) > M3 (1995)
E36 (92-99) > M3 (96-99)3 Series
E46 (99-05) > 320i
E46 (99-05) > 323Ci
E46 (99-05) > 323i
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 328Ci
E46 (99-05) > 328i
E46 (99-05) > 330Ci
E46 (99-05) > 330i
E46 (99-05) > 330xi
E46 (99-05) > M35 Series
E39 (97-03) > 525i
E39 (97-03) > 528i
E39 (97-03) > 530iX Series
E83 X3 (04-10) > X3 2.5i
E83 X3 (04-10) > X3 3.0iZ Series
E36/7 / E36/8 Z3 (96-02) > Z3 2.5
E36/7 / E36/8 Z3 (96-02) > Z3 2.8
E36/7 / E36/8 Z3 (96-02) > Z3 3.0
E36/7 / E36/8 Z3 (96-02) > Z3 M - S52
E36/7 / E36/8 Z3 (96-02) > Z3 M - S54Z Series
E85 / E86 Z4 (03-08) > Z4 2.5i M54
E85 / E86 Z4 (03-08) > Z4 3.0i M54