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AEM Induction 21-685P

Cold Air Induction System 2006-11 Honda Civic Si 2.0L 6.27 HP Increase Polished

AEM Induction 21-685P

598-21-685P

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AEM Induction 21-685P Cold Air Induction System 2006-11 Honda Civic Si 2.0L 6.27 HP Increase Polished $367.99
Cold Air Induction System
  • 2006-11 Honda Civic Si 2.0L
  • 6.27 HP Increase
  • Polished

  • AEM Induction 21-685P Details

    Honda CAIS

  • Guaranteed Perfect Fit
  • Provides Superior Filtration
  • Comprehensive Installation Instructions
  • Manufactured And Assembled In The USA
  • Limited Lifetime Warranty

  • Specifications:

    Replacement Filter
    21-203DK
    Horse Power Increase
    6 HP
    Estimated Horse Power Gain
    6.27 HP @ 5100 RPM
    Clamp Material
    Stainless Steel
    Clamps Included
    11
    Couplers Included
    0
    Filter Material
    Non-woven Synthetic
    Filter Color
    Red
    Clamp Style
    Mini
    Intake Pipe Material
    Aluminum
    Air Filter Outlet Shape
    Round
    Air Filter Large End Diameter
    6 in (152 mm)
    System Type
    Cold Air Induction
    RPM
    5100
    Manufacturer's Part Number:
    21-685P

    The Best Air Induction with More Power than the Rest!
    Pioneers of cold air induction for sport compacts, AEM relocates the filter outside the engine compartment for a cooler intake charge. Individually tuned in length and diameter, every AEM Air Induction System has the highest construction standards and an AEM guarantee for the life of your vehicle. Three types available:

    Cold Air Induction System (CAIS)
  • Outperforms all comparable systems on the market
  • One-piece four-layer cotton gauze air filter eases installation
  • Filter's exclusive air horn design improves performance
  • Complete hardware kit with soft mounts for a guaranteed perfect fit
  • Finishes: Powdercoated Gunmetal Gray, Red, and Blue or maintenance-free Polished
  • AEM decals and license plate frame included
  • Limited lifetime warranty
  • Manufactured/Assembled in the USA

    Short Ram Intake System
  • Same features as CAIS except filter is not relocated outside the engine compartment

    Dual Chamber/V2 Intake System
  • Same features as CAIS but with dual chamber design
  • Chamber has two different diameters and lengths of piping to create multiple frequency sound waves
  • Multiple frequencies help charge the cylinders with air throughout the entire RPM range
  • Unique zirconia-based, titanium-look powdercoating reduces heat soak and enhances looks

    Note: AEM Air Induction Systems are either CARB-exempt (California Air Resources Board) or pending CARB exemption

  • Does AEM Induction 21-685P fit your vehicle?

    Narrow Results
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    Year
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    SubModel
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    Liter

    2008 HONDA CIVIC

    • Fitment_Note: All Intake Tube Ports Needed For The Specified Applications Are Included
    • EngineType: ALL
    • SubModel: MUGEN SI

    2006 HONDA CIVIC

    • Fitment_Note: All Intake Tube Ports Needed For The Specified Applications Are Included
    • EngineType: ALL
    • SubModel: SI

    2007-2008 HONDA CIVIC

    • CC: 1998
    • Fitment_Note: All Intake Tube Ports Needed For The Specified Applications Are Included
    • Liter: 2.0
    • SubModel: SI
    • CUI: 122
    • EngineType: L4 ( 2.0 L / 122 )

    2009-2010 HONDA CIVIC

    • Fitment_Note: All Intake Tube Ports Needed For The Specified Applications Are Included
    • EngineType: ALL
    • SubModel: SI

    2011 HONDA CIVIC

    • CC: 1998
    • Fitment_Note: All Intake Tube Ports Needed For The Specified Applications Are Included
    • Liter: 2.0
    • SubModel: SI
    • CUI: 122
    • EngineType: L4 ( 2.0 L / 122 )
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