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Airaid 100-400 Air Intake Tube, 4 in. OD
Airaid 100-400 Air Intake Tube, 4 in. OD

Airaid 100-400 Air Intake Tube, 4 in. OD

Universal Fit, 4.00" Outside Diameter, U-Bend Bend Style, Black, Plastic

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Airaid 100-400 Air Intake Tube, 4 in. OD
Airaid 100-400 Air Intake Tube, 4 in. OD
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If you can imagine a custom intake system, now you can build it! The U-Build-It (UBI) kit is the most versatile custom intake system on the market. AirAid offers their master kits, which include everything you need to build a complete system, and all components are also available individually for maximum adaptability. Whether you are doing an engine swap or have a custom application where space is tight, the AIRAID® UBI Intake System can accommodate just about any application. The only limitation is your imagination!

While a UBI master kit is recommended for anyone building a custom intake system from scratch, sometimes completing a custom intake might require a few extra couplers, or perhaps an extra bend. To address this, AIRAID® offers all of the UBI components individually. All of the UBI intake tube straights and bends are available as individual pieces, as well as couplers, hump hoses, clamps, filter adapters, and so on. AIRAID® also has a wide selection of filters in different sizes that are compatible with all of the UBI systems.  Air system tubes available in 3", 3-1/2", and 4" diameters.

  • 4" intake tube only
  • Complete system tubes
Some parts are not legal for use in California or other states with similar laws/regulations

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  • Jeff K. doesn't just limit his tendencies to the classics. His daily drivers get the special treatment as well. Take his 2015 Mazda6, for example. Among the changes Jeff made was to install a K&N Performance Air Intake kit.

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