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K&N Series 57 FIPK Cold Air Intake (97-06 4.0L Jeep Wrangler TJ)

Item J12220
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Market Price $459.99 You Save 13% ($60.00)
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$399.99 (kit)

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      Video Review & Installation

      The K&N 57 Series FIPK Performance Cold Air Intake is for those of you who that have a four-liter, 1997 to 2006 TJ, and are looking to add a cold air intake for a little bit more power, a little bit more fuel efficiency, and a little bit more sound from underneath the hood, especially when you jump on the throttle. Now, in theory, any time you help an engine breathe in or out a little bit more freely, you are gonna get some more power. And that is going to be true with this cold air intake. You are gonna pick up a couple of horsepower. Now in general, a cold air intake is going to give you horsepower at the very top of the RPM range, which isn't an area that you see all that often in your TJ. So I don't think you're going to feel huge gains from this cold air intake in the seat-of-the-pants dyno. However, you are going to get some additional noise from under the hood and you are going to get a little bit of mile per gallon gains from this because you are gonna to get a little bit more air into the engine.Now the reason you're not going to see huge horsepower or torque gains all the way through the RPM range is because that I6 has been around for a very long time and it is very much optimized right out of the factory. So you are going to see some gains, but they're not going to be massive. The other thing to note with any kind of cold air intake, this one included, is that if you take your Jeep off-road a lot in an area where there's a lot of water, you run a lotta mud, do a lotta water crossings, this is going to eliminate that factory aquabox [SP] out of your air intake system so you're going to eliminate one level of protection against sucking air into the engine and potentially causing damage via hydrolock. So keep that in mind as well. If you are somebody who's just running a lot of drier trails, you can certainly get away with something like this, although some people will say that the more open element K&N filter will let a little bit more dust and particulate into the engine. So that's something to consider as well. In general, a cold air intake is designed to pull colder air, but no matter what, unless you're installing a snorkel, you're still pulling air from underneath the hood of your Jeep from within that engine bay. TJs are known for a lot of heat soak, so it's very hot under there, but this is going to help get a little bit more air into the engine and it should be a little bit cooler partially thanks to this piece of the cold air intake here that is designed to allow it to pull the coldest air from that front corner of the fender as possible instead of from the center of the engine bay which, of course, is going to be a little bit warmer. This is going to be a setup from K&N, so you're getting, of course, a K&N air filter which is going to be washable and re-oilable. This is, or should be, at least, the last filter that you'll ever have to buy for your cold air intake because you can just clean it out and reuse it over and over and over again. Now as far as cold air intakes goes, this one is going to be around the middle to the lower end of the price range. There are some intakes that have a fully enclosed air box, and those ones are going to be more because they're gonna have more material. There are also some that have a metal intake tube instead of the plastic one that's included with this cold air intake. Those are also going to be more expensive. But if you're looking for something a little bit more basic, not quite as many features, and save a little bit of money, this is gonna be a good way to go.So I touched on a little bit of the construction of this cold air intake already, it has this plastic intake tube, it's also going to come with all of the couplers, the hardware, and the clamps that you're going to need to get it attached to your Jeep. So you have the intake tube here, you also have a nipple built right into it for your vent, and you also are going to have a spot where you can install your ambient air temp sensor if you have one of the later model TJs that is equipped with one. Of course, here you have a bit of an air box. It is really only going to be three-sided and that is designed to draw the coldest possible air into the engine, and this does also come with some weather stripping that you can put around the outside of it, it's gonna finish off the look of that box a little bit further. Of course, as we said, this does come with one of K&N's conical air filters that is going to be washable and rechargable, re-oilable, so you can use it over and over again. As far as the install goes, I am gonna give this a one out of three wrenches. This is probably going to take you less than an hour to get installed on your TJ, and anyone can do this in their driveway with just some traditional hand tools and a socket set. The first step is, of course, going to be removing that factory air intake that you have on your Jeep. So you'll remove the clamp and the intake tube from your throttle body, you're also going to unbolt the rest of the intake box that comes on your Jeep from the factory in order to make room for your new system. Now in order to install this system, you are going to have to take your ambient air temp sensor out of your factory tube. If you have one, be careful, don't break it. Go ahead and insert it into your new tube as you're installing it onto the throttle body. You'll wanna work your intake box over top of your intake tube, get that all bolted down in place. And finally, to top everything off, install that new air filter onto your intake.So as I mentioned before, this is a moderately priced cold air intake coming in at right around 265 bucks. The ones with a fully enclosed air box, more material, more expensive. The ones with a metal tube, also going to be more expensive to produce, more expensive to purchase. So this is going to a little bit less expensive than some of the other options out there, but it's still gonna get the job done. So if you're looking to get a cold air intake on a bit more of a budget but still get one that's gonna do everything you need it to do, I do think this is a pretty good value.So if you're looking for an affordable cold air intake for your 4.0 TJ, I definitely recommend this one from K&N, and you can find it right here at

      Product Information

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


      • Improves Horsepower and Acceleration
      • Filters Out Harmful Contaminants
      • No Computer Tune Required
      • CARB EO Number: D-269-34
      • Simple Bolt-On Installation
      • Fits 1997 - 2006 TJ Wranglers with 4.0L Engine


      Increased Performance. The K&N FIPK is designed to increase performance in your fuel injected stock engine by using air filtration that lessens the amount of resistance in air flow. The low resistance results are evident in throttle response. The adapters are also designed to add a radius entry that lowers restriction and allows the engine to take in even more air. This true evolution air take technology consistently achieves horsepower gains in every atmosphere. You replace the entire air intake tract, which isolates the cold air and directs the air through the unique chamber system. In some cases horsepower has been increased by more than 26, while torque has risen as much as 23 feet per lb.

      Filters Out Harmful Contaminants. The supplied K&N Filter successfully filter's out harmful contaminants with it's unique layered design. K&N Air Filters are made up of layers of specially treated cotton gauze that are sandwiched between two epoxy-coated aluminum wire screens for durability. K&N uses a specially formulated grade of oil to treat the cotton gauze layers which causes a tackiness throughout the cotton's microscopic strands creating a powerful filtering media that ensures engine protection.

      Additional Features. It was even exempted by the California Air Resource Board, under D-269-34, which says a lot about its performance and quality. This filter can help you increase power, increase torque, and even improve gas mileage at the same time. Covered by an incredible 10 year 1,000,000 mile warranty, this is a one-time purchase that will last you for life.

      Application. This K&N Series 57 FIPK Performance Cold Air Intake is specifically designed to fit the 1997 - 2006 TJ Wranglers with 4.0L engines.

      Technical Note. The K&N Cold Air Intake is not designed for vehicles equipped with a Body Lift.



      K&N 57-1514-1

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Air Filer
      • (1) Intake Tube
      • (1) Heat Shield
      • Hardware

      Customer Reviews (100+)

        Questions & Answers

        10 More Questions

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