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AEM Air Bypass Valve

34 Reviews
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$79.99
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Product Info
Features:
  • Keep your engine breathing freely even when your intake is submerged in water with AEM's Air Bypass Valve
  • Exclusively designed to work with your AEM Cold Air Intake System - V1 systems only, does not work with the V2
  • When your intake's main filter becomes submerged, your Air Bypass Valve automatically takes over, shutting off induction from the wet filter and drawing air in through its external diaphragm
  • The Air Bypass Valve's foam filter shields against dust, rocks and other harmful material
  • For maximum durability, the Air Bypass Valve features a sonically welded, nylon-reinforced cage
  • Nasty chemicals and the elements are no match for the Air Bypass Valve's urethane flapper valves
  • 50 state street legal when used with your AEM Cold Air Intake Kit
  • On the majority of AEM Cold Air Intake Kits, the Air Bypass Valve installs right to the upper inlet pipe
  • Comes with the proper hose clamps for a painless mount
  • Download installation instructions (PDF)
  • AEM backs your Air Bypass Valve with a 1-year warranty
Description:

Your engine needs oxygen to keep the fire burning in its belly. While your AEM Cold Air Intake reaches down below the bumper to draw in the freshest air, it's at risk for sucking in something deadly to performance: water. Equip your aftermarket intake with an Air Bypass Valve for a surefire defense against hydro-lock.

When your intake becomes submerged, your Air Bypass Valve immediately springs into action. It closes off induction from your main filter and reroutes the air flow through its external diaphragm. Plus, the integrated foam filter traps dust and blocks debris from getting into your powerplant.

Built tough to withstand life inside your engine compartment, your Air Bypass Valve boasts a sonically welded, nylon reinforced cage. And, its urethane flapper valves are nearly impervious to the elements and harsh chemicals.

All Air Bypass Valves are 50 state street legal, and most mount easily to the upper inlet pipe. Backed by a 1-year warranty.

Notes:
  • The AEM Air Bypass Valve is not compatible with the AEM V2 Cold Air Intake
  • ATTN: State of California Consumers
    warning symbolWARNING: Cancer and Reproductive Harm (www.p65warnings.ca.gov)
Moss Warranty Act Statement

Thanks to the Magnuson Moss Warranty Act: US Code – Title 15, Chapter 50, Sections 2301-2312, your vehicle’s factory warranty is protected by law when you add aftermarket parts.
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Customer Reviews

Average Rating
Appearance
Ease of Installation
Price/Value
Quality
34 Customer Reviews
5 Star
24 (71%)
4 Star
8 (24%)
3 Star
2 (6%)
2 Star
0 (0%)
1 Star
0 (0%)

excellent

My toyota had a trd cold air intake that had this same valve and it needed replacing so it works amazing easy to install and looks great nice and new.
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Posted By Raul R (Orlando, FL) / March 26, 2015
2007 Toyota Yaris
Yes
No

Great buy

For a few bucks to protect you engine is a great buy in my book
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Posted By Nyron p (Pine hill, NJ) / April 13, 2013
2005 Mazda 6
Yes
No

aem air bypass vavle

Overall a good product which is very helpful. I believe its a lil pricy for the size but worth the buy. I recommend for everyone that has a cold air intake.
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Posted By Jose R (EMPORIA, KS) / September 12, 2012
2006 Chrysler 300
Yes
No

good sh*t

GOOD SH*T!!!
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Posted By hyo sok h (DALLAS, TX) / May 12, 2012
2002 Honda S2000
Yes
No

American Made Quality

I am very Impressed with the speed in which i got my valve and while You can find cheaper you cant find better! Installed on 2.0L DOHC ZeTec. Item was received as described. "A+"
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Posted By Elijah R (Eugene, OR) / April 17, 2012
Yes
No

Excellent!!

Like everything about the bypass valve. Works like a charm
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Posted By Federico R (Tuscaloosa, AL) / April 7, 2012
2000 Mitsubishi Galant
Yes
No

best product out there n came with all hardware

Would def buy from you again n very happy with. Aem product
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Posted By Chris E (Bellows Falls, VT) / March 9, 2012
2000 Honda Civic
Yes
No

your product is great

Your customer service is outstanding. It is the most efficient customer service people I have ever encountered. Thank you I wish all customer service was as efficient as yours. You people need to teach customer service classes to some of these other Companies. Thank you again
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Posted By PAMELA H (SAINT PETERSBURG, FL) / March 8, 2012
2005 Scion xB
Yes
No

aem bypass

Works just as described. Fit perfectly.
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Posted By James C (Coral Springs, FL) / February 25, 2012
2011 Honda CR-Z
Yes
No

It Fits

I ordered the part to replace one that was broken. It seems to be the correct part and it fits properly.
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Posted By Donna K (Houston, TX) / November 18, 2010
2004 Scion xA
Yes
No

Great Product (small cut in power)

Having this is lifts a HUGE worry off my chest about sucking in water and trashing my engine. Great product easy to install only thing I see wrong is I noticed a slight change in power when accelerating but I am willing to deal with it because it will pay off in the long run while driving in wet conditions!
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Posted By Andrew B (Hollywood, MD) / August 27, 2010
Yes
No

eazy acest to get it from y7ou guys

good work guys
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Posted By Jose R (Santa Monica, CA) / January 29, 2010
2003 Nissan 350Z
Yes
No

aem airbypass

i bought the air bypassvalve cause i really need since everything time it rains out here it get flood it i need something to protect my motor and so i choose to buy
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Posted By oliver j (Houston, TX) / November 17, 2009
2003 Nissan Sentra
Yes
No

AEM Air Bypass Valve

Product gives me a little bit more confidence when driving in the rain. Very easy to install I used a hack saw to cut my cold air intake then added the bypass valve with ease! I did notice that my intake is'nt as loud as it was without but I didnt feel any power loss.
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Posted By Julio C (Lincoln, CA) / October 22, 2009
1994 Acura Integra
Yes
No

installed

Auto Anything had a good price especially with no shipping. Took about 4 days from Canada to NY. The Bypass is a simple install. But you do have to cut your Cold air intake. I have a Fujita 2.75 CAI. It fits fine. Just get the right size and cut the tube (use the paper template AEM provides- for the width the bypass will take in the CAI). Clean out the shavings, attach everything, mount everything back. Done. I have not tested the bypass and God willing never will have to. But it provides a little more confidence in rainy weather. Does it affect the driving? Yes. Mostly psychological; confidence in rain and possibility of warmer air seeping in for less hp. (when driving it should not open until the filter is submerged in water). Be safe people use jack stands or ramps when taking the filter off. Don't cut the CAI while still attached to the engine (shavings will get into the engine, you need to clean the pipe out). The bypass itself seems sturdy, but I read reviews saying they don't last long. (I just put it in). I suppose it has to do with placement of the bypass and forces acting on it. I suggest not putting it at a bend or close to one, so it can be flush with the CAI pipe. I hope this is helpful.
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Posted By A. K (Jamaica, NY) / May 19, 2009
2002 Honda Accord
Yes
No

AEM sir bypass valve

I live in Gresham Oregon where it rains quite a bit, i would definitly recommend as an insurance policy to your cold air intake. So far no complaints and valve doesnt affect proformance on my intake.
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Posted By Shawn P (Gresham, OR) / March 5, 2009
2005 Mazda 3
Yes
No

Save your engine

The bypass valve is key to saving your engine from water damage. The only problem is it breaks every year from vibrations and normal wear and tear but other than that it does its job keeping water out of my engine.
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Posted By Aaron L (Lake Dallas, TX) / October 29, 2008
1993 Honda Civic
Yes
No

AEM Bypass Valve

This is a great product for people like me that dont like to take chances on messing up the motor. It is very easy to install. Would not buy any other brand. Great company to buy from as well.
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Posted By Chance N (Starkville, MS) / July 22, 2008
2004 Nissan Altima
Yes
No

If you have an AEM cold air intake, you have to have this too

By relocating your air filter under your front bumper, you put your engine at risk. This is really cheap insurance agaist water getting into your engine. But, this thing is thin and cheaply made. It's a good thing it installs easliy because it will last you about a year before the engine heat and vibration rip it in half and you gt to put on a new one, just like I get to do every year. Don't bother with the instructions, I think they are in Chinese. Just look at one in a photo, cut your pipe and put it on. If you can tie your shoes, you can install this.
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Posted By Raymond P (Klamath Falls, OR) / April 25, 2008
2003 Acura CL
Yes
No

Great item and will save your engine

I wish they had told me about this when I bought the intake. I incurred additional expense by having to pay the mechanic to do the work twice. Otherwise I'm very happy with the increased performance of the intake and exhaust.
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Posted By Jeffrey W (Stamford , CT ) / April 1, 2008
2007 Honda Odyssey
Yes
No

Need better illustrated instructions

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.
Posted By Michael S (Groveland, FL) / January 23, 2008
2002 Honda Accord
Yes
No

Btpass Valve

I got my bypass valve and installed it very easy. I only wish they would make the pipe out of the same material as the intake. My old one cracked throwing the idle off because it was before the mass air flow sensor, thus allowing more air to come in, usually not a bad thing, but threw the idle off. Everthing else is good, just use metal instead of plastic.
Posted By Michael C (Hanover, PA) / January 23, 2008
2001 Ford Focus
Yes
No

A must have with an Air Intake

You must buy this if you don't want to do some major damage done to your engine. A great product for a very cheap price.
Posted By Richard H (Danbury, CT) / December 19, 2007
1998 Honda Accord
Yes
No

a must have

this aem bypass valve is a must have item for your hard earned investment. the install is easy and the directions are very detailed and easy to follow. why take a chance with hydro-lock, when this product protects against all elements. autoanything has the best price and fastest shipping on the net and i've done alot of shopping around. rest assured next time you're driving in the rain or snow that you are protected with the best, j. cox, oklahoma city,ok
Posted By Joseph C (Midwest City, OK) / September 13, 2007
1998 Honda Prelude
Yes
No

AEM Air Bypass Valve

Definitely a must have for rainy weather. The instructions were sort of unclear where to cut the intake. Had to go the AEM's website find out exactly where to cut the intake.
Posted By Nareth V (Concord, NH) / July 14, 2007
1999 Honda Accord
Yes
No
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