aFe designs their filters differently than other cotton gauze filters. They design their filters to have 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) Taller pleats mean that the pleats can be spaced out more to let more air through. This is important because BMW OEM filters already flow well.

aFe also uses a different pleat geometry than others. Rounded tips like a dolphin's nose replace the more triangular and pointed pleats found in other brands. This rounded design allows the air to flow more efficiently around the tops of the pleats. Not only that, because it is rounded, the pleats aren't tightly pinched and let air flow through the tops and bottom of the pleats increasing surface area and ultimate flow potential.

100% engineering grade polyurethane is used which is more flexible and will seal better in today's plastic and fiberglass factory air boxes. To make sure that aFe's filters stand up over the life of your vehicle, urethane is used on all four sides of the filter, not just on the open ends. The polyurethane stands up to high engine temperatures and engine chemicals better that the plastomers that the factory filters use.

Another feature that makes aFe filters unique is their progressive bump seal on their flat filters.
This bump seal made of flexible polyurethane is compressed tightly in the factory air box for a sure leak proof seal even when the factory air box has uneven sealing surface.

A true value in BMW high performance, all areas have been address to assure your buying the best product. aFe manufactures and private labels filters and intakes for strict in-hose tuners like TRD, Mugen, and others who don't just want to perform better, but want to win! aFe is VAC's intake supplier of choice.

• Features can included:
  
• Increased throttle response
• Better fuel economy
• Washable/ reusable filter media
• Installs in less than 30 minutes and using common hand tools
• Limited lifetime warranty
  
  
  We can order any aFe kit you like, not just BMW. Call or email so we can special order one for you today.
  
  

Tech Notes:
aFe Makes both oiled and non-oil filters. The oiled modles typically flow better. While we have not seen this happen with aFe oiled filters, if you are concerned with oil on your Air Flow Sensor/Meter, simply clean it with a recommended product available at most parts stores for $5 or less. A very simple procedure.

• 7 Series fitment details:
• 02-05 BMW 745i/Li V8-4.4L
• 06-08 BMW 750i/Li V8-4.8L**
• 03-08 BMW 760i/Li V12-6.0L**
• 04-08 ROLLS ROYCE PHANTOM V12-6.7L**
• 2009 ROLLS ROYCE PHANTOM V12-6.8L**
  **Note: 2 Filters Required