AEM 2.5in Air Bypass Valve

AEM 2.5in Air Bypass ValveLarger Image


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w/ AEM Cold Air Intake

w/ Clip; For Use on AEM Cold Air Intakes Only; Not Compatible w/ V2 Intake Systems

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Generally, the Air Bypass Valve installs along the upper section of the induction pipe, close to the throttle body. Do NOT install it too close to the Inlet Air Temp sensor, and NEVER install an air bypass valve in between a throttle body and Mass Air Flow sensor (MAF).

NEVER use an Air Bypass Valve on a forced induction vehicle as it will damage the valve and could lead to engine damage.

AEM's patented Air Bypass Valve virtually eliminates the chance of hydro-lock in the event the filter of your AEM Cold Air induction system becomes submerged in water. On most systems, the valve installs along the upper portion of the inlet pipe and shuts down induction at the filter when it becomes submerged, rerouting air through its external diaphragm to keep water out and air flowing in. Check with your dealer or call AEM for more information on air bypass valve installation locations. The AEM Air Bypass Valve is C.A.R.B. exempt on AEM Cold Air induction systems only and is NOT for use on forced induction vehicles. Patent #6,394,128.
  • Virtually eliminates chance of intake system ingesting water if filter becomes submerged
  • Installs along upper portion of AEM intake systems with minor modifications
  • Patent #6,394,128
  • Complete hardware and installation instructions included

Installation Guides and Links

Installation Guide
Describes how to install AEM's 2.5in air bypass valve on



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AEM 2.5in Air Bypass Valve
w/ Clip; For Use on AEM Cold Air Intakes Only; Not Compatible w/ V2 Intake Systems
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