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Deegan 38 Cold Air Intake (12-18 3.6L Jeep Wrangler JK)

Item J153929
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$156.99 (kit)

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      Video Review & Installation

      Merideth: If you're looking for an affordable and efficient way to upgrade the intake on your 2012 to 2018 3.6-liter JK Wrangler, this Deegan 38 Cold Air Intake in black will be a great kit to look into. Now, if you've added heavier mods to your Wrangler, noticed a lack in fuel economy and/or throttle response, this cold air intake will help out by allowing the engine to breathe better, and assist when it comes to adding some of that performance back, if that's what you're looking for. Now, this will also be a great option if you're tired of replacing your factory filter, and want one that you can reuse, so you don't have to constantly do maintenance to achieve that extra performance. I do wanna call out that this style of intake is not gonna be as protective as your factory air box or other air box designs like it. So, I would recommend this more for somebody who's mainly avoiding any heavy mud or water when they take their Jeep off-road.Now, getting into the features here, this intake will feature a straight-through style intake tube, to relieve a decent amount of restriction, and increasing the airflow for better fuel efficiency and performance that I mentioned before. That can usually be felt in throttle response, and this is not gonna require a tune to do so. This is also going to feature that reusable filter, to cut down on maintenance while creating a clear and more efficient flow of air getting to the motor. Now, in addition to the function, this will also just elevate the styling underneath the hood compared to the boring factory plastics, with the unique green filter and an all-black textured look.And when it comes to the build of each of the components here, the heat shield will be made of a durable steel material that will seal to the hood, and the intake tube will have an aluminum build, to reduce any heat buildup while boasting a tough, black powder coat, for a stealthy look and additional protection to the steel and aluminum underneath from any rust or corrosion. Now, the filter will be made of a high-flow multi-layer sticky media that will be 100% cleanable, and the rest of the kit will come with all of the hardware, clamps, and fittings that you need for a snug fit.Now, this will come in at roughly $200, which is very affordable in comparison to some other options available on the page. Now, something simplistic like this will usually be more on the cost-effective side, as to where some more expensive choices may have a bit more to their design, like protection to the air box and other features in that design. Now, overall, I like the fact that this keeps it very simple and to the point. It gives the engine bay a sporty aesthetic, while adding a very functional upgrade, and saving you a couple bucks in the meantime. Now, install's a very easy 1 out of 3 wrenches on the difficulty meter, taking you about a half hour to get the job done with some basic hand tools. At this point, we can head over to the shop and check out a detailed breakdown of what that install process looks like step-by-step. That's gonna wrap it up for me. Let's go ahead and get into it.Man: Tools used for this install, a 3/8 electric impact gun, a flat blade screwdriver, 8, 10, and 13-millimeter 1/4-inch drive sockets, a 1/4-inch drive long extension, a 10-millimeter open-end wrench, a 1/4-inch drive ratchet, a 3/8 to 1/4-inch drive adapter, and a 4-millimeter Allen head wrench.Hey, guys. I'm gonna show you how to install our cold air intake here on our Wrangler, but first, we're gonna watch a quick uninstall video, and then we'll jump right back into the install.Merideth: So, our first step to this install is popping off our engine cover. With that out of the way, we'll have full access to our intake. So, I am going to start with the throttle body hose clamp. I'm using an 8-millimeter socket just to loosen that up. You can also use a flathead screwdriver if you'd like, but that usually just quickens up the process. Then we can move over to the hose clamp that's holding onto our air box. So, you don't necessarily have to disconnect the air box from the intake tube. However, we have our winch wires here, and in order for us to shimmy everything out, I'm just gonna disconnect the tube from the air box. So, you're gonna use the same 8-millimeter socket, and loosen that up. So, now you can remove the bolts that are holding in your radiator hose right here. We do not have a second bolt because our bracket is broken on the top and the bottom, but this will be a 10-millimeter bolt. I'm just using a 10-millimeter socket. Get that outta there, and then that will free everything up from the radiator support. So, now we can disconnect this tube connect to the air box. Just slide right off. And then we can disconnect our air temperature sensor.Now, like I mentioned, because we have our winch wires here, I'm gonna remove the tube first and then move over to our air box. So, probably a good idea to start up at the throttle body. Make sure you're watching that coolant hose. You can pull that right out. So, now we can remove our air box. All you have to do is pull up, and it will be held in by a couple of push pins down at the bottom. You just gotta give it a little tug.Man: So, now that we have our stock intake off and we have our new intake up here, what we're gonna do is first remove our air intake sensor here, and we're gonna put it into our new pipe, and I'm gonna show you how to do that right now. We're just gonna grab ahold of this. So, now all we're gonna do is just grab ahold of this and pull out on it and give it a twist, and pull it right out like that. And as you can see, we have a grommet in our new tube here, and we're just gonna slide this down in place, give it a wiggle, and maybe a little bit of a twist.Sometimes it's a little tough. I even put some grease on it, just to make it fit, like that. So, now what we're gonna do is we have our tube slid over top here. It just pushes on. We're gonna take our hose clamps. I'm gonna get them in place. That way, we get this ready, so that when we get it on the vehicle, we're ready to tighten it up. I'm gonna make sure it's, put both hose clamps facing the same way, and we'll set this to the side. Now we'll work on our air box here. And what we're gonna do is we have six bolts that we're gonna start, put in, with some nuts, and tighten these up. And then we have some rubber to put on this, and we're gonna get our air box ready so we can take this over, install it on our vehicle.So, now we're gonna take our Allen heads, they're 4-millimeters, with our locking nuts, and I'm just gonna get these started here. I'm just gonna go around and get 'em all started. And now that I got 'em all started, I'm gonna take a 4-millimeter Allen head wrench here, and an 8-millimeter on my 1/4-inch drive ratchet. I'm gonna hold this, and we're just gonna tighten them all up.So, now we're gonna stick our rubber seal in place right here, and just get it started. I'm just gonna fish it right around. Actually, that fits pretty nice. Just make sure it's in place all the way around. And now we'll stick our top seal on. Now, what we're gonna do is just take this, push it down. You can feel it down in place. When it gets to the corner, we'll make the turn. Now I'll put this down in place here. I'm just gonna spin it around a little bit here and get this corner in, and get it down as far as I can go. Pretty much like that.So, next, we have our long bolts here with our spacer. I'm just gonna show you how one goes on. It's gonna be just like that, then a flat washer. And now, this is gonna go down inside the vehicle, and you're gonna see the spot where the old one had some grommets, or some tabs that stuck out, that went through some rubber grommets. These are actually gonna go through the rubber grommets, come out underneath the vehicle, in the wheel well. We're gonna put and, like, sandwich the rubber grommet with two washers, and then use one of the locking nuts to hold it in place, pretty much like that. And we'll repeat this on this one here. That way, when we get it in the vehicle, you're gonna remove this washer and this nut, and it'll slide down. And then you'll be able to put this washer and nut on through your inner wheel well, and then tighten these up and get this whole air box in place.So now, like I explained on the bench, we have our air box in place, we have our washers, our spacers, and stuff. There's two grommets down here, and what I'm gonna do is line these two studs up with them grommets, slide this through, and then we'll get underneath and I'll put my washers and nuts on. So, now I'm gonna drop this down into place here. And you're gonna do this while you're still holding on to the studs here. There we go. And you're just gonna set that down into place. And you can kind of just let it sit back there because you're gonna get underneath here, and when you get underneath, you're gonna end up putting your washers and nuts on.So, now we're gonna remove this 8-millimeter right here. I'm gonna take my 8-millimeter on my 1/4-inch drive ratchet, pull this bolt out. Once I get it outta the way, then I'm just gonna move my air box back up in place, restart the bolt, and we'll tighten it right back up. Next, we're going to get underneath and tighten our two 10-millimeters up. So, now we have two 10-millimeters down in here that we put in. They have our spacers. I'm gonna take my flat washer and my locking nut, and we're not gonna be able to see this because we're gonna get down in here. But I'm gonna go underneath and just push down, and get the washer and nuts started on this one. And I'm gonna do the same with the other one. And then I'm gonna take 10-millimeter on a long extension, and my 3/8 gun, and I'm gonna get on this one here, and I'm gonna take a 10-millimeter wrench and get underneath, and hold the nut. And tighten it up, just like that. And do the same on the other one.So, now we have this connector here. It's got a 13-millimeter nut that goes on the backside of it, just like this. I'm gonna run it in place, and this is going to attach our air tube to the box. Once we get it in, I'm gonna take my 13-millimeter, and tighten this up. So, now we're gonna install air intake tube. First thing we're gonna do is plug in our air intake sensor underneath, and we'll slide this in. Make sure our bracket lines up with that stud underneath, that we put on. Once we get that in place, and you're gonna be able to wiggle this around here. Slide that in place. Get our hose clamps where we want 'em, back 'em off, just like that. Same with this one here. And I'll line these up. And once I get them in place, I'll take my flat screwdriver, tighten these two up. Same with this one. And we have those two in place.Now we're gonna move over here. Slide on our PCB hose. They supply you with a hose clamp to hook this up. Slide that in place. I'm gonna take my flat screwdriver, tighten 'em up, like that. Last, we're gonna take our other 13-millimeter nut underneath here, and get it on the stud that we put on our air box. I'm gonna grab my 13-millimeter ratchet. You might not be able to see this. I'm gonna get under here, tighten that up. Next, we'll put our air filter on. So, now we're gonna put on our air filter. I'm just gonna take this, sit this down in place here. Line it up. Once we get it in place, tighten up our hose clamp.And that wraps up this review and install of our Deegan 38 Cold Air Intake, for '12 to '18 3.6-liter Jeep Wrangler JKs. Thanks for watching, and for all things Wrangler, keep it right here at

      Product Information

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


      • Improves Airflow for More Power
      • Increases Throttle Response and Performance
      • Steel Intake Tube
      • Textured Black Finish
      • Reusable, High Flow Air Filter
      • Simple Bolt-On Installation
      • No Computer Re-Tune Required
      • Fits 2012-2018 3.6L Jeep Wrangler JK Models


      Better Flow for More Power. Improve the power and performance of your 2012-2018 3.6L JK Wrangler with a Deegan 38 Cold Air Intake. By replacing your Wrangler's restrictive factory intake with a high flow filter assembly, you will see and feel a noticeable increase in rear wheel horsepower and torque. This Deegan 38 Intake not only improves airflow for an increase in power, but it will also add an aggressive appearance to the engine bay with its textured black steel intake tube.

      No Tune Required. Deegan 38 engineered its Cold Air Intake to improve the performance of your V6 Wrangler without the need of reprogramming your computer. By utilizing flow dynamics, this Intake will increase power using the original factory tune. Even though a re-tune is not required for operation, ExtremeTerrain recommends a custom tune to reprogram the vehicle's computer (ECU) to get the best possible performance from this Cold Air Intake.

      Reusable Air Filter. The included high flow air filter effectively filters out power robbing particles with its multi-layer design. The specially-treated media creates a sticky surface to capture microscopic contaminants before they can enter your engine and do harm. Seeing that the filter is reusable, there is no need to buy a new filter every few thousand miles. You can just clean the filter, re-oil it, and reinstall - saving yourself money in the long haul.

      Simple Bolt-on Installation. Deegan 38 designed its Cold Air Intake kit to be a direct bolt-on replacement. With no special tools or extra modifications required, installation can be completed in under an hour. All parts and detailed instructions are included.

      Application. This Deegan 38 Cold Air Intake; Textured Black is designed to fit 2012-2018 Jeep Wrangler JK models equipped with the 3.6L V6 engine.



      Deegan 38 J153929

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Air Filter
      • (1) Intake Tube
      • (1) Heat Shield Base
      • (1) Heat Shield Surround
      • (1) Intake Coupler
      • (1) Upper Weatherstrip
      • (1) Air Filter Weatherstrip
      • (2) Zip Ties
      • (2) Hose Hold-Downs
      • (1) Allen Key
      • (4) 3” Hose Clamps
      • (2) 1” Hose Clamps
      • (1) Rubber Grommet
      • (1) Rubber Insulator with Studs
      • (6) M5x0.8 Bolts, Nuts, & Washers
      • (2) M6x1.00 x 45mm Bolts
      • (4) M6 Flat Washers
      • (2) M6 Spacers
      • (2) M8 Locking Nuts
      • (2) M8 Flat Washers

      Customer Reviews (22)

        Questions & Answers

        10 More Questions

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