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Injen Evolution Cold Air Intake (07-11 3.8L Jeep Wrangler JK)

Item J108300
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$325.00 (each)

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      Video Review & Installation

      Ryan: This Injen Evolution Cold Air Intake is for those of you that have a 2007 to 2011 JK with that 3.8-liter V6 that are looking for a cold air intake that's going to allow the engine to breathe a little bit better. When you let more air into the engine more easily, you are going to produce a little bit more horsepower and torque, a little better throttle response, and also a few additional MPGs, and that's what a cold air intake is all about. This one, in particular, is gonna be different from some of the other ones you'll find on the market because it has a few additional features that we're gonna talk about in just a second, and because it does have a closed airbox. Some of the other ones are just a tube and a filter, this one does have the airbox. So, because of that and those other features we're gonna talk about in just a second, this one is a little bit more expensive than some of the other choices. So, it's up to you what you're looking for on your Jeep, and if these additional features and the closed airbox are worth the additional price for you. This is gonna be a nice, easy one out of three wrench installation. Everything is going to pop off of the Jeep very easily, all the factory intake pieces, and this is going to go right into their spot very, very simply. Again, one out of three wrenches, and we'll show you how to do that in just a second.So, what does this cold air intake consist of? Of course, you're going to have your filter. And the idea behind the filters on the cold air intakes are that, generally, they allow a little bit more air in than that factory paper filter that you had in your factory airbox. You're going to have your intake tube, which again, in general, is gonna be a little bit bigger than the factory intake tube, allowing more volume of air to get into the engine. And as I said before, this has a closed airbox, and the idea behind that is that the opening in the airbox, where the air actually enters, is a very specific spot. And it's not just pulling hot air from underneath the engine bay because, of course, the engine is very hot, this is going to pull air from a very specific spot, and that spot should be pulling a little bit cooler air from outside of the engine bay, the grille area or the fender well area, wherever it might be. So, that's the idea behind the closed airbox.Now, the other feature that this has that a lot of the other options on the market are not going to have is this little indicator down here. So, this dial indicator will measure vacuum, and you hook that up to the end of your air filter here. And when that little dial senses vacuum, it knows that your filter is dirty. Now, because this is a closed airbox system, you can't see the filter, so you can't just see that it's starting to look dirty. So, that dial indicator makes things a little bit easier for you. And Injen is really one of the only companies, if not the only company that is doing that. So, between the closed airbox that, of course, has more material, so is more expensive to produce, the dial indicator there, and then just the overall quality of the pieces that you're getting here, this kit, again, is a little bit pricier than some of the other options out there, coming in at right around that $325 mark.So, I said before, pretty easy installation. Let's show you how to do it.Man: Tools used for this installation are as follows. We have a small nut driver or you can use a ratchet if need be, a 8-millimeter socket, a Phillips head screwdriver, and a Allen key. All right. Now, let's get started with the installation of our new intake on our JK Jeep. Now, to do that, we have to remove our factory intake. Now, this is a very simple process. It only takes one tool to remove our factory intake, and we're just gonna use a 8-millimeter socket. Now, you can do this with a flat head screwdriver. I prefer the socket, there's less slipping on our clamps that way. We're gonna go ahead and disconnect the clamp from our throttle body, then we're gonna slide the breather line off the top of our factory intake box along with disconnecting our air temp sensor. After that, we're gonna pull the entire airbox out as a unit because it just clips down to our inner fender. After that, we're gonna go ahead and get it on our table because we do have to swap over our air intake sensor to our new cold air intake. We're gonna have to do a little bit of assembly on our new cold air intake. We're gonna do all of that on the bench and then slide it into our Jeep pretty much as a unit.All right. Now, to take our breather line off our airbox, just give it a good grab and slide it off carefully. We're gonna go ahead and unplug our air temp sensor. Just lay that off to the side for now. And with our 8-millimeter socket, we're gonna loosen our clamp. With our hose disconnected from our throttle body, we can go ahead and pull our entire airbox out as a single unit.All right. Now, here on our workbench, we're gonna go ahead and assemble our new intake system. Now, to do that, we're gonna need three tools: a Philips head screwdriver, our 8-millimeter socket or our flat head screwdriver, and a Allen key. Now, we're gonna begin by assembling our air filter system and then sliding that into our box, securing that down, and then adding in the few other small components to go with it. Take your respective clamp and put it over the end of your air filter. Then we're gonna slide our airbox lid onto the filter. Now, when doing this on the table, you are gonna wanna be careful of the nipple that is on the end of your air filter. This goes to the gauge that tells you how dirty your air filter is. That gauge is there to show you just how clogged up it is, it'll show you how much performance you're actually losing with the dirt that's there. Once that is on, we can go ahead and tighten up our clamp using our 8-millimeter or our flat head. With those two pieces together, we can go ahead and slide that into our airbox and secure it down with the hardware. We're gonna take our Phillips head screws with our water seal gaskets and just go ahead, slide our little...they're kind of like a gasket washer, over those, line it up and just secure them down. And just repeat this for all four. Now that we have our filter and box assembly together, we can go ahead and get our gauge installed. Now, to do that, we're gonna take one of our rubber grommets that came with the kit and just put it right here in the top of our airbox. Gonna fit that down the side of the hole.Next, we're gonna go ahead and put the small air tube over the end of our gauge. Then we'll slide the tube down inside the grommet. We'll reach in through the side. Make sure that our grommet is lined up with the name on our box here and just carefully press it down inside the grommet. Once that's secured in place, we can take our tube, reach in the side of our airbox to that little nipple that we were careful of earlier and slide the other side of the air line on it. Now that is done.Now that our gauge is installed on our airbox and it's all hooked up to our air filter, we can go ahead and get our [inaudible 00:07:06] shield installed on our airbox using the two Allen head screws that came supplied in our kit. We're gonna take our two screws. Now, I found that a 3/16 Allen key fits, but you're gonna need one of the small Allen keys with a slight bend to it on the end. That's the only thing that's really gonna fit. If you have one of those large Allen key setups with all the different ones that fold out, they're really not gonna fit that well. Go ahead and just snug this down.All right. Now, we're ready to get our rubber coupler onto our air intake box. Now, this is gonna secure our box to our new air inlet tube. With your clamps in place, just go ahead and slide it over the end of our box. Make sure it's well seated. Then go ahead with your 8-millimeter socket and snug the clamp down. All right. Now, we can get our coupler in place that goes from our air inlet tube to our throttle body. Just go ahead and slide that over your inlet tube, making sure it is fully seated and secure that down with the supplied clamp that comes in your kit.Now, before we get our new air intake sensor installed in our tube, first we have to install the grommet that goes inside of our tube to hold it in place. To do that, it pops right into our tube just like the one we put in our airbox earlier. Now, as you can see, with our old air intake box on our table compared to our new one, you can see the vast difference. The real difference is on the inside with the air filter. This one uses a cone-style oiled cotton gauze filter that just cleans the air a lot better, also while letting a lot more air in. Other big change is the tube itself. You can see that the new tube that comes with our new air intake is a lot smoother running than the tube that comes on our stock one, that has the bellows and it has all the extra twists and turns in it, that slows down the air, gives it a lot of turbulence, that just robs power from your vehicle.Let's go ahead and get our sensor out. And to do that, just grip it tightly and give it a small pull, but don't go in there with a pair of pliers grabbing on it. I promise you this will come out, just take your time. If you break the sensor, it's gonna cost you a little bit extra money later at the dealership or at the part store to replace it. There we go. Our sensor is out. We can take this one and toss it off to the side. Now, to install our new sensor, just pushes right into our intake tube. All right. Now, with this all together, we can go ahead and get it in our Jeep.With our airbox now secured down into place, we can go ahead and get our new inlet tube on. Now, that just simply slides into the coupler that's on our airbox and then onto our throttle body. Then we'll tighten down our clamps and re-plug in our air temp sensor. After that, we'll get our new breather hose in place. Now, with your 8-millimeter socket, go ahead and tighten down your clamps. And don't forget to plug in your air temp sensor.All right. Now, the final piece on our new air intake system is our breather line that comes off of our valve cover. Now, to remove that, just follow the line over to the top of your valve cover and just slide it off. It just pushes down on top of it. There's no clamps, there's no hardware, it just slides right off. There's not really anything in the way. Now, we're gonna install our new hose in its place.All right. Now, the last part that goes on is our new rubber tube. That's just gonna slide down over the fitting on the top of our valve cover. And just weave it out of the way of any moving parts or anywhere it can get pinched. Slide it onto the front of our airbox, and we're complete.Now, the installation of our new engine air intake is complete. And I hope you enjoyed the video, and it shows you just what it takes to do this at home yourself with a few simple hand tools. Now, for more parts and videos like these, make sure you give us a visit at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Guaranteed Horsepower and Torque Gains
      • Increased Air Mass Acceleration for Better Throttle Response
      • SuperNano-Web Dry Air Filter Maintains Motor Cleanliness
      • Dense Cross-Linked Polyethylene for Improved Lifespan
      • 100% CAD Design & Dyno-Tuned for Safe Performance
      • Uniquely Styled Air Box with Plenum and Tube
      • Branded Urethane Plug
      • Updated Air Filter That No Longer Ships with the Vacuum Port Molded Into It
      • Easy Installation
      • No Computer Re-Tuning Necessary
      • NOT CARB Certified for Street Legality in 50 States
      • Fits All 2007-2011 3.8L Jeep Wrangler JK Models


      Improved HP and Performance. The Injen Evolution Cold Air Intake has a standalone air filtration chamber that provides an accurate reading for your next cleaning project. It matches the OE style and integrates with factory components while providing an enhanced performance.

      Branded Urethane Plug and Updated Air Filter. This kit includes a branded urethane plug and an updated air filter that no longer ships with the vacuum port molded into it.

      No Computer Reprogramming. This Cold Air Intake by Injen Evolution is designed to offer you a custom upgrade that requires no computer reprogramming for your 3.8L Wrangler. You can add an optional custom tuner with a handheld tuner to gain optimum performance from this cold air intake.

      Reusable Dry Air Filter. The biggest problem with greased filters is that they coat the stainless coupler. That reduces the efficiency of the system. This Cold Air Intake has a dry, rotational-molded polyethylene filter for increased air flow and filtration. The filter is reusable with low maintenance. Servicing is carried out between 10,000 and 20,000 miles.

      Hassle-Free Installation. Injen Evolution's Cold Air Intake is engineered to be an exact fit for the OE factory air induction system. Installation is easy with simple tools. No modifications are required.

      Warranty. Injen Evolution guarantees this Cold Air Intake system free from defects and flawed workmanship with a limited lifetime warranty.

      Application. The Injen Evolution Cold Air Intake fits all 2007-2011 Jeep Wrangler JK Models with a 3.8L V6 engine.

      Fitment: 2007 2008 2009 2010 2011 Details

      Injen EVO5007

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Intake Tube
      • (1) Rotomold Air Box
      • (1) Rotomold Plenum
      • (1) Air Box Shield Director
      • (1) Filter
      • (1) 3 in. - 2.75 in. Step Hose
      • (1) 4 in. Hump Hose
      • (1) #48 Clamp
      • (1) #40 Clamp
      • (2) #64 Clamps
      • (2) Grommets
      • (1) Filterminder
      • (1) 3mm Vacuum Hose @ 10 in. Long
      • (4) M6x20mm Bolts
      • (4) 1/2 in. OD Rubber Seal Washer
      • (2) M6x10mm Bolts
      • (1) 17mm Hose @ 25 in. Long

      Customer Reviews (16)

        Questions & Answers

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