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AEM Air Bypass Valve

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You never pay more for AEM at AutoAnything, guaranteed! If you find this product at a lower price within 1 year of your purchase date, call 1.800.874.8888 and we’ll beat it.

List Price:	$68.70
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Customer Rating:	(25 Reviews)
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	Air Bypass Valve

	Select options to see availability. 50-state street legal

Add Performance and Power with Confidence

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. Details

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
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

Reviews (25)

Questions & Answers (1)

AEM Air Bypass Valve Customer Reviews

 Average Rating
Appearance
Ease of Installation
Price/Value
Quality

25 Customer Reviews

5 Star		18
4 Star		5
3 Star		2
2 Star		0
1 Star		0

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It Fits 

						0 of 4 people found the following review helpful.
					
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							Reviewed by Donna K (Houston, TX) 2004 Scion xA — Nov 18, 2010 11:20 AM
						
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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Great Product (small cut in power) 

						2 of 3 people found the following review helpful.
					
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							Reviewed by Andrew B (Hollywood, MD)  — Aug 27, 2010 4:42 AM
						
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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eazy acest to get it from y7ou guys 

						3 of 6 people found the following review helpful.
					
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							Reviewed by Jose R (Santa Monica, CA) 2003 Nissan 350Z — Jan 29, 2010 1:45 PM
						
good work guys

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aem airbypass 

						3 of 8 people found the following review helpful.
					
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							Reviewed by oliver j (Houston, TX) 2003 Nissan Sentra — Nov 17, 2009 7:50 PM
						
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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AEM Air Bypass Valve 

						4 of 6 people found the following review helpful.
					
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							Reviewed by Julio C (Lincoln, CA) 1994 Acura Integra — Oct 22, 2009 7:01 PM
						
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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installed 

						16 of 19 people found the following review helpful.
					
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							Reviewed by A. K (Jamaica, NY) 2002 Honda Accord — May 19, 2009 7:00 AM
						
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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AEM sir bypass valve 

						6 of 6 people found the following review helpful.
					
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							Reviewed by Shawn P (Gresham, OR) 2005 Mazda 3 — Mar 05, 2009 12:41 PM
						
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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Save your engine 

						10 of 13 people found the following review helpful.
					
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							Reviewed by Aaron L (Lake Dallas, TX) 1993 Honda Civic — Oct 29, 2008 6:05 AM
						
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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AEM Bypass Valve 

						5 of 6 people found the following review helpful.
					
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							Reviewed by Chance N (Starkville, MS) 2004 Nissan Altima — Jul 22, 2008 9:30 AM
						
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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If you have an AEM cold air intake, you have to have this too 

						7 of 8 people found the following review helpful.
					
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							Reviewed by Raymond P (Klamath Falls, OR) 2003 Acura CL — Apr 25, 2008 10:47 PM
						
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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