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Part:   21-203BF-OS

AEM 21-203BF-OS DryFlow Air Filter

Universal Air Filters AEM DryFlow Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0
 
  • Excellent filtration with great air flow
  • Does not require oil
  • Easy to clean
  • Synthetic filter media

AEM Brute Force Dryflow Air Filters are specially designed for tough off-road applications. They provide outstanding levels of filtration efficiency and capacity. AEM Brute Force Air Filters are oil-free and their synthetic media is incredibly easy to clean. Even more impressive, they are so durable that they maintain their shape under even severe abuse.
Specifications AEM 21-203BF-OS Product Specifications
Air Filter ColorGray
Air Filter Large End Diameter5.5 in (140 mm)
Air Filter MaterialNon-woven Synthetic
Air Filter ShapeTapered Conical
Base Outside Diameter5.5 in (140 mm)
Filter MaterialNon-woven Synthetic
Flange Inside Diameter3 in (76 mm)
Flange Length0.938 in (24 mm)
Flange Offset0.438 in (11 mm)
Flange TypeOffset
Flanges1
Height5 in (127 mm)
Inner Structural SupportNo
Package Contents1 Air Filter
Package Quantity1
Product Box Height7.13 in (181 mm)
Product Box Length6.38 in (162 mm)
Product Box Width6.38 in (162 mm)
Product StyleAEM Dryflow Round Tapered Air Filter
Top Material/FinishNone
Top Outside Diameter4.75 in (121 mm)
Top StyleRubber
Weight1.1 lb (0.5 kg)
Reviews Product Reviews

Jackie K Guillermo from Makawao, Hawaii
August 3, 2016 - Part 21-203BF-OS
I have found this online site the very best in navigation, product & shipping cost. I have both standard & offset flanged Brute Force Dryflow Air Filters. Maintenance wise have not led to extra expenditures to clean & upkeep these filters. The standard filters have served me well on various Toyota 4 & V6 engines where I have dispensed with the stock airbox & panel air filters. The OS is used on my daughters 2014 KIA Optima LX, 2.4l which has an aftermarket cai locating the Dryflow Air Filter close to the backside of the drivers side fog light. This may be an unusual fitment since the car is South Korean built or the car model & optional fog light housing. This one has the single outside lens.
Jackie K Guillermo from Upcountry, Hawaii
July 14, 2016 - Part 21-203BF-OS
I have been using the AEM Universal Tapered Cone Grey Media Filters for over 10 years, long before it was designated BF. My inventory consists mostly of the AEM 21-203BF Air Filters both standard and offset flanged. These serve me well on Toyota 4/6 cylinder and KIA 2.4l engines. After cleaning and maintenance on the filters, they are shelved and used on a rotational basis. The filters don't have the wire screen on the outside which other filters have, that in my opinion, is a bother. Especially if the screen breaks and damages the media or unseen and poke one's fingers/hand. No oil mess, ease of maintenance and except for increase in price the BEST ALL AROUND FILTER FOR MY USE.
Steve from Colorado
May 31, 2016 - Part 21-203BF-OS
Great fit.
Adrian Pacheco from San Diego
January 6, 2014 - Part 21-203BF-OS
I really like using these AEM air filters. They're reliable and do a good job in keeping that dirt out. I know they sell cleaning kits, but I like to change my filter every 4-6 months, and I've been buying them from AEM for years now.
Adrian Pacheco from San Diego, California
October 30, 2013 - Part 21-203BF-OS
I love the AEM filters. They're a good cost and last forever if you clean them properly. I personally like to get a new one every couple of months cause that's just how I am. haha