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05/21/2029 1:43 AM
Tax Return Sale Price $392.35
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Part number: 21-686C
Call For Availability: 800-299-1028
Product Details
AEM 21-686C Cold Air Intake System
Products specifications
Color Clear
Filter Color Red
Filter End Cap Finish Black
Quantity Sold as a kit.
Sleeve Color Black
Tube Color Gray powdercoated
Tube Material Aluminum
Clamp Material Steel
Clamp Style Regular
HP Increase 4 HP
RPM 3800
Clamps Included 9
Estimated HorsePower Gain 4.0 HP @ 3800 RPM
Intake Pipe Color / Finish Gunmetal Gray
Product Style AEM Cold Air Intake System
Replacement Filter 21-201DK
Air Filter Color Red
Air Filter Height 5.125 in (130 mm)
Air Filter Large End Diameter 6 in (152 mm)
Air Filter Material Non-woven Synthetic
Air Filter Outlet Shape Round
Couplers Included 0
Intake Pipe Ports All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included Mass Air Flow Sensor Adapter Included When Required
Vacuum Tubing Included No
Weight 10 lb (4.5 kg)
Case Length 20.2500
Case Height 12.2500
Case Weight 10.0000
Case Width 12.2500

AEM Gunmetal Gray Cold Air Intake Systems is designed to produce massive horsepower and torque gains as well as better engine sound when used as a replacement for the factory airbox and air filter. AEM intake systems are designed, tuned, and dyno-tested to fit specific cars and trucks. These kits usually include an oversized AEM Dryflow synthetic washable air filter for optimum air flow, filtration, and performance while allowing easy oil-free cleaning. Most AEM intake systems use mandrel-bent aluminum intake tubes, powder coated heat shields, and high quality hardware designed to reduce restriction and reduce intake temperature.

  • For off-road use only
  • Smooth and straight air flow reduce intake restriction
  • Facilitates easy oil-free cleaning
  • Includes AEM Dryflow synthetic washable air filter
  • Engineered to produce maximum horsepower and torque

AEM Cold Air Intake System
C.A.S. HONDA CIVIC 1.8L L4 06-11
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Out of all the websites I've used to find my item, this was the lowest cost, and I'm so happy that I found them!  Keep up the great work guys!
Ordered on a Thursday evening and received my parts on Tuesday. Very quick but the website couldn't provide proper tracking info.
Had the product I wanted and at the lowest price. Thank you for the outstanding service!

Great price and really fast shipping.  Great communication as well.
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