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AEM® Air Bypass Valve - 2.25" Opening

AEM® Air Bypass Valve - 2.25
AEM® Air Bypass Valve - 2.25
SKU#: AEM-20-400S
M.S.R.P: $68.70
Our Price: $56.99
Shipping: Free (Continental US)
User Rating ( ratings)

AEM's Air Bypass Valve virtually eliminates the chance of hydro-lock in the event the filter of any 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.

  • Virtually eliminates chance of intake system ingesting water if filter becomes submerged
  • Installs along upper portion of any intake systems with minor modifications
  • Complete hardware and installation instructions included

  • Items: AEM® Air Bypass Valve - 2.25" Opening
  • SKU#: AEM-20-400S
  • Manufacture's SKU#: 20-400S
  • Size: 2.25
  • Price: $56.99
  • Shipping:
    Free (Continental US)
    $11.17 (Outlying U.S. Territories)
    $20.10 (Canada)

    International  Shipping Quote

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AEM® Air Bypass Valve Reviews (20)

Every customer can leave a review about our service and the product that was purchased. In order to leave your review for the purchased product, please log into MY ACCOUNT after you receive your order. We encourage all of our customers to take the time to share their experiences with our website with everyone.
AEM® Air Bypass Valve - 3.0" Opening
Posted by
I ordered the part to replace one that was broken. It seems to be the correct part and it fits properly.
AEM® Air Bypass Valve - 3.0" Opening
Posted by
Excellent price point. Highly recommended.
AEM® Air Bypass Valve - 2.75" Opening
Posted by
I have this installed with the X3 cold air intake on my Altima and i love it.
AEM® Air Bypass Valve - 2.25" Opening
Posted by
Good valve, fast shipping, thank you!!
AEM® Air Bypass Valve - 2.75" Opening
Posted by
I had to look online to find what the bypass valve looked like after instillation. It was easy to install but I didn't use the instructions that much in the installation.


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