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Free Shipping Over $299.99

Orders of $299.99 or more ship free within the continental U.S.

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This part does not have vehicle specific fitment. Please contact us if you need fitment assistance.

AEM 3" Air Bypass Valve
Part Number: 20-403S

AEM 3
Images may be for reference only

AEM 3" Air Bypass Valve
Part Number: 20-403S

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$69.99

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4 In Stock
Monday-Friday: 10am-4pm MST

Product Details

Brand: AEM Intakes
Part Number: 20-403S
UPC: 840879006990
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.

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.

Vehicle Fitment

This part does not have vehicle specific fitment

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