The AEM Bypass Valve is specially designed to be used with any cold air intake system that might have the possibility of being submered under water while driving. If your air filter becomes submerged in water, you can run the risk of sucking water into your engine, and hydrolocking the engine which renders the engine unuseable.

The AEM Bypass Valve is universal and can be used with any intake system. Pick the size that best matches the size of your intake pipe.

AEM Bypass Valve Applications

Universal Fitment

20-400S	2.25" AEM Air Bypass Valve
20-401S	2.5" AEM Air Bypass Valve
20-402S	2.75" AEM Air Bypass Valve
20-403S	3" AEM Air Bypass Valve

AEM Bypass Valve Reviews, Installation Tips, Questions, and DIY

Questions
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Reviews
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Installation Tips
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