TRD Cold Air Intake (CAI)

 In 5th Gen Mods, Accessories, Install, TRD

TRD Cold Air Intake (CAI) 5th Gen 4Runner & FJ Cruiser

TRD Cold Air Intake (CAI) 5th Gen 4Runner

TRD Cold Air Intake (PTR03-89100)  Fits 2010 – 2018+ 4Runners

Part number (PTR03-89100) TRD (Toyota Racing Development) cold air intake system is a genuine OEM Toyota part and carries a factory warranty through Toyota parts of TRD USA.

The next up in competition would be the AFE or K&N.

TRD CAI Price:

5th Gen 4Runner TRD Intake

TRD Cold Air Intake (CAI) 5th Gen 4Runner - Filter and Box

Most of this post is going to be straight information on the actual intake specs. If you want to information from a true performance overview, check this page out.

Keep in mind that we already have a cold air intake on the 4Runner from the factory.

So why an aftermarket intake?

By bringing cooler, denser air into the engine, your 4Runner will run much cleaner and cooler.

This system features a low-restriction air filter that is housed in a special molding to keep air flowing tighter and cooler.

The TRD CAI is a great addition you can make when it comes to aftermarket engine parts and performance.

What the TRD Cold Air Intake Features

TRD Cold Air Intake (CAI) 5th Gen 4Runner - Service Filter

General Features

  • 4.0L V-6 Engine
  • Emission Legal in all 50 states.
  • Dyno-Tested
  • Increase HP Gains
  • Increased Torque
  • Superior Power and Performance when coupled with Exhaust
  • Enhanced Airflow
  • Increase Fuel Efficiency
  • Reusable/Washable Air filter
  • High-Flow/Low Restriction
  • Vacuum Indicator that monitors filter Efficiency
  • Indicator for Service – vacuum indicator that indicates when the intake/ filter should be serviced.
  • 1 Year Toyota Warranty

Benefits of the TRD CAI

TRD Cold Air Intake (CAI) 5th Gen 4Runner - Filter and Box

  • Lower restriction means more power and higher energy efficiency
  • High dust holding capacity means cleaner air to your engine and more power
  • Environmentally friendly, one filter for the life of your vehicle, simply clean and re-oil rather than replace
  • High heat resistance to extreme under hood environment
  • High-strength polyurethane seal material provides structural integrity for high load and vibration conditions
  • Designed using OEM parts for Maximum CO2 air filter housing
  • Surgical gauze filter media is supported by woven aluminum mesh to prevent pleat flutter and dirt migration
  • Contrasting colored oil ensures proper distribution

Increasing Horsepower

Adding a TRD CAI  will give you anywhere from 5-15 additional hp when installed and combined with other aftermarket accessories. If you are installing a CAI, you may also want to look at an exhaust system.

There are many other factors that go into producing more hp and they range from getting an aftermarket exhaust, cold air intake, air filters and of course a supercharger. The supercharger will obviously give you the biggest power increase.

The AFE Vs. TRD Cold Air Intake


  • aFe 54-81932 Magnum FORCE Stage-2: $500
  • TRD (PTR03-89100): $475


  • aFe produces 10 hp. 15 lbs. x ft. torque and outflows the factory intake by 34%.
  • TRD produces increase hp and torque (yeah, they don’t say much)


aFe: The housing features auxiliary inlet duct for better airflow as well as an attractive black aluminum cover that provides ready access to the filter for servicing. This system also features a heat-insulating molded plastic tube that replaces the stock intake tract and directs increased air flow with improved volumetric efficiency for maximum performance.

TRD: Developed using OE Engineering Information. In this case, that’s important because the mass airflow sensor – a critical component of the engine management system – is located in the intake area and must be accommodated in the design of the air intake.


The general consensus is pretty close in a back and forth battle of which is the better intake. Most owners have either a TRD, aFe or K&N. It is a close battle between these. I think it comes down to personal preference on look and sound. All of these have a louder sound than stock, increase power, and generally work as advertised.

TRD CAI kit contents

  • Air filter
  • upper airbox
  • lower airbox
  • hump coupler
  • throttle body coupler
  • air inlet tube
  • airflow accelerator

TRD CAI bag contents

TRD Cold Air Intake (CAI) 5th Gen 4Runner - Parts

  • Number 52 hose clamp
  • number 56 hose clamp
  • number 72 hose clamp
  • plastic nipple 1/8 inch
  • plastic nipple 5/8 of an inch
  • hose 5/32 of an inch ID X 20 inches
  • convoluted split loom 15″
  • Airbox clip
  • filter minder grommet
  • filter minder
  • nylon tie strap – treemount
  • Nylon tie strap 6″
  • bracket and wire harness
  • bowl
  • socket M4 by 0.7 x 8 mm
  • instructions

Recommended tools

  • Blankets or fender covers
  • nut driver
  • 10 mm socket
  • 12 mm socket
  • quarter inch drive socket
  • quarter inch drive ratchet
  • quarter inch drive extension 6 inches long
  • Phillips head screwdriver
  • screwdriver
  • Allen wrench 3 mm
  • torque wrench 0 to 120 feet pounds of torque
  • Glass cleaner
  • silicone spray lubricant

Emission Compliance

Emission Compliance Sticker - TRD Intake

UPDATE: See compliance sticker above. This came in from Blake and he had this to say:

“I didn’t even know it was compliant. I got the intake, installed it maybe a couple weeks ago, then yesterday another letter came from the dealer with a copy of the invoice that said the sticker was mailed separately, and it happened to be in that letter from the dealer. Didn’t ask for it, it just showed up from them.”

From the Original Post:

For 2010-2018+, Toyota has changed the emission compliance information on the CAI. A new process has been implemented by Toyota which means there is no longer a need for the emissions label which is typically included in the performance CAI for the 5th Gen and FJ cruisers.

We are located in California and will not be using an emissions compliant label. If your state requires an emissions compliant label, one may be ordered through Toyota dealer or the Toyota materials distribution center at 310-468-9800, or

The TRD CAI has received 50 state emissions compliance via the California Air Resources Board or CARB. Not all states require the emissions compliance label but TRD does recommend ordering one.

To receive the proper emissions compliance label for the TRD CAI please order MDC part number 00602–35120. Also, proof of ownership may be required, so you may need to prove that you bought the intake from an official distributor.

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Showing 48 comments
  • Angie Kuykendall

    When I go on the TRD website to search for TRD parts for my 2017 4Runner TRD PRO it says the CAI is not an option for 2017?? I am wanting to add this to my vehicle was just curious why its not listed as an option for 2017. Is there a difference between the 2016 and 2017? I would appreciate any info if you have it. Thank you. Your page is awesome!! Keep up the good work.

    • Bgreene

      Angie, good question.

      If your 2017 4Runner has the v6 4.0-liter engine, it should fit just fine. We have a 2014 and a 2016 4Runner, they both have the same engine, I don’t think there is anything different about the 2017. Pop your hood and make sure your engine bay looks like this (4Runner Intake Install – Refer to Step #1). If everything looks similar, you should have the V6 4.0-liter engine in which the 5th Gen TRD intake should fit your 2017. I would call your local Toyota service center also to see what they say. Also, Toyota said that the same intake did not work for the 2014 4Runner (maybe CA state emissions??), but we clearly installed it and it kicks ass. In any case, if you are running the same engine with the same layout, I think you should be safe. Again, just check your local Toyota service center and see what they say.

      EDIT: The K&N is the only intake that is currently available for the 2017-2018 4Runner ( Good Luck and thanks for the kind words!

  • Benjamin Cox

    Are you sure this fits(PTR03-89100) a 2016 4runner looking up the part number it says it it does not fit onto a 2016 4runner.

    • Bgreene


      For whatever reason (Maybe California Emission Standards – Amazon wouldn’t even ship it to California), Amazon and even the Toyota Service Center will say that the intake does not fit. I had to purchase it directly from an out of state TRD authorized dealer. With this being said, I am 100% certain it fits on 2014, 2015, 2016 and 2017. We own a 5th Gen 2014 TE (Trail Edition) which is installed here (TRD Step by Step CAI Install), along with a new 2016 SR5 which has the same exact engine layout. There is literally nothing different about the engine. Also, on Amazon, there are many different people that say they have installed on 2016 SR5 and TE (Trail Edition). Your 4Runner has a 4.0L V6 Engine (Same Engine). It will be a clean easy install. Go for it.

  • John LaPlume

    Talked to Toyota today, apparently they moved the air pump on the 2017 4Runner so this will not work. Hopefully they will come out with an updated version soon. John…

    • Bgreene


      Good to know. Thanks for the heads up. Let us know if you hear any update on the 2017 4Runner CAI (TRD or any aftermarket Intakes).

  • Fern

    Hi – Was able to install this exact TRD CAI on my 2017 TRD Off-Road with a very minor modification. Nice clean install. Runs great!!

    • Bgreene

      Yo Fern,

      Thanks for sharing. This is good news to many 2017+ owners out there who want to install the TRD Intake. Thanks for sharing your images through email. We will get these posted somewhere on the site to show that installing the TRD intake on the 2017+ is possible.

      Thanks again for sharing.

  • Robert

    The third sentence in this article has the word you and it should be the word your.

    • Bgreene

      Robert, lol. Thanks! I appreciate it!

  • Walter Jeremy Golding

    I want to fit the 5 gen cai trd filter to my 2016 FJ cruiser… what must I do to purchase it from your site/or how do I purchase it.. Im despetate to purchase it.. please help.

    • Brenan - Trail4R

      We do not sell the TRD Intake. I would call your local Toyota parts department or check the link on this page. Or, there are a few online retailers that have it for sale. Check TRDParts4u. They might have it in stock.

  • Walter Jeremy Golding

    Thanx bro. I will definitely check out the link. I have another question. It seems the TRD CAI (Cold Air Intake) for 2013 FJ Cruiser is abundant. Can you advise with authority that a 2013 CAI will fit on a 2016 FJ CRUISER? And, does it matter if your steering is right or left?

    • Brenan - Trail4R

      I honestly have no experience with the FJ. I have owned 4Runners my whole life. Not sure about the 2013 Intake fitting on a 2016 FJ. That would be a good question for your Toyota Service Center.
      Cheers! – Sorry I can’t be more helpful in the FJ department.

  • Jeremy

    Will this fit my 2018 Toyota 4Runner TRD Off Road if it does where can I purchase one

    • Brenan - Trail4R

      Yeah, this intake was installed on a 2017 4Runner. See the post here (2017/2018 TRD 4Runner Intake). One of our members installed this on his 4Runner, which was a 2017. 2017 and 2018 have the same engine layout. You should be good to install this TRD Intake on your 4Runner, but you may need to do some adjustments. Also, there is nothing wrong with the K&N intake. We are actually buying a K&N INtake for our 2016 4Runner to see the difference here pretty soon.

  • Andre

    New kid on the block. I’m a half step away from purchasing this TRD CAI for my 2015 T4R Trail Premium that I purchased last week, but being able to pass the whole California Smog Emissions thing has held me up as most parts people at dealerships are just pencil pushers and don’t know any different (topic for another thread) here is what my research has led me to.

    The TRD website or states part number PTR03-89100 is 50 State Legal for 2010-2011 4Runners, the dealerships I’ve contacted can’t find it in their system. I’ve seen a few videos of this being installed on 5th Gen 4Runners, you state that it will fit on 5th Gen 4Runners so “we” know that it fits. The big mystery seems to be why don’t the dealerships get on the same page with this information? You’d think they might want to sell $375 parts like hot cakes right???

    Anyway, here is a link to the actual California smog gods that clears 4Runners up to 2014 for this intake that was reviewed by their Mobile Source Operations Division in 2013. I hope this helps.

    It’s a holiday today, so I’ll contact TRD direct tomorrow and see if they have any updates. BTW, so far I added a Magnaflow cat back system last week and I’m loving it!

    • Brenan - Trail4R

      Awesome information. Thanks. Yeah, I have heard of a few people passing smog just fine with the TRD intake. We are not up for smog for another two years but I am sure we will pass if others are passing in California as well. We will see what happens. I would pull the trigger but that’s just me. Just save your stock airbox just incase.

      • Andre

        Hey Brenan!

        Thanks for the advise! I was also thinking about a drop-in K&N filter as another option since that would probably get me nearly half of the horsepower of the TRD CAI for only 50 bucks. HA!

        I know the tube must flow better without those noise chambers, but how do you think the carbon filter in the top part of the housing affects air flow? Looking for more justification for this purchase. I know we’re not building a race car here, I’m thinking of efficiency. Speaking of which, have you noticed a difference in your MPG?

        • Brenan - Trail4R

          We actually just bought the K&N filter for my girls 4Runner just to review it. It should be here tomorrow. After that, we will buy the K&N intake and then see what that one is all about. The carbon filter is designed to meet higher emission standards. When you shut your 4RUnner engine off, any remaining vapor in the intake manifold will stay in the manifold and travel backwards towards the inlet of the air box. This remaining vapor get’s absorbed by the carbon portion of the filter. I wouldn’t count on a filter doing much for HP gains, but we will see. For MPGs it all depends on how you drive. If you drive conservative, then you can expect to see gains. If you have a lead foot, then expect the latter. I drive my 4Runner pretty hard with the exhaust, intake and now the throttle response controller. So, my MPGs are pretty low, but they did go up after installing the Pedal Commander. I also have 34″ tires and that does not help.

  • pete

    I share your passions, 4Runners, Nature and photography. Thanks for sharing your knowledge. Good luck and may the 4Runner take you places few have gone, to see things few have seen.

    • Brenan - Trail4R

      That is so awesome! I am not the best photographer nor am I a 4Runner “expert” by any means but they are two things I definitely love.
      Cheers, Pete and to you as well!

  • Lee Marks

    So as far as sound goes, how does the TRD intake compare to the K&N?
    Thanks Lee

    • Brenan - Trail4R

      Good question, we are buying a K&N soon for our other 4Runner. We will have something to compare the TRD next to once we install. From all the videos I have seen, the K&N sounds deeper, more aggressive and a bit more throaty than the TRD. But, no personal experience with K&N yet.

  • Chris B

    I’m very far form a mechanical person. I do have a friend though who is pretty mechanically inclined. When talking to him about this, he said that:

    “The PCU determines gas and air flow as per the mapping grid thus they call it getting the PCU tuned to allow more air or gas to make more HP.”

    Essentially, the CIA or exhaust changes really won’t do anything to increase air intake as the computer dictates that. The PCU would need to be reprogrammed or tuned in order to open that up. I likely will change the exhaust either way to get some more growl, but I’m curious if there will be any actual HP realized by changing both of these.

  • Zach

    Looking forward to the K&N CAI review! I live in Florida so emissions isn’t a concern (which isn’t necessarily a good thing, but that’s another discussion). Just bought my 1st 4Runner – ’16 SR5 FWD w T-Force – and am seriously considering the K&N intake as my first mod.

  • hannibal

    hi I came across this article trying to research the model number for a try cold air intake for a 2014 fj cruiser ( last year made for the US) will this model PTR03-89100 be able to fit my Fj ? thanks in advance for any advice

  • Eric

    It seems as though everyone has been out of stock on these for a few months now. Does anyone know when they are expected to available or if this delay is due to an updated version in the making?

  • William Tucker

    Eric I was told by my local dealer, Jay Wolfe in St. Louis, that the part will be available June 20th, 2018 and will be, he says, for the newer 4Runner models and specifically my 18 Off Road.

    • Eric

      Awesome news! I figured that was the reason they have been unavailable. Thanks for confirming that my senses were correct!

      • William Tucker

        Dealer called this morning, air intake arrived early, install next week.

  • Cole

    Hey Brenan, besides the slight increase in power, do you get any gains or losses in fuel economy?

    Also, have you heard of anyone having warranty issues with these when getting their vehicle serviced at dealers? Maybe it has to be a TRD one? I have a 2018 and of course don’t want to do anything detrimental to the warranty.

    • Brenan - Trail4R

      Cole, did not measure MPGs before and after. No issue with my warranty on the Intake. I paid for a warranty up to 75K miles and dealer still services the 4Runner under warranty.

      • William Tucker

        Only had CAI for 500 miles, but mpg has increased by .1, small sample, but I definitely have been more aggressive with acceleration and no mpg losses

  • Brian

    Man Toyota seems pretty confused on this part. My local dealer looked up the part number and warned me their system says this part is only fitting a 2010/11 FJ and that if I install it on my 2016 SR5 to do it at my own risk blah blah blah. Some other FJs have this issue… I mean I am doing this one or the K&N? I would prefer TRD. Thoughts everyone?

    • William Tucker

      I would never trust myself to do any mechanical work, thus I rely on info from people like Brenan, my dealer had same initial response as yours, but they were willing to do the work, they reported no complications, the part fits and performance gains are noticeable

  • Brian

    Question on CAI’s in general. There are a lot of write ups about the computer compensating for larger CAI’s. Everything from the CAI only work on WOT, their is still a restriction of airflow when you get to the throttle body/intake area, engine will run lean and wear out faster all the way to they only thing they are good for is sound.

    Thoughts on all those arguments? Are we really wasting time and $ for a great sound and something that looks sexy?

    I also assume if you eventually go Mag SC, you would remove the CAI, or would it fit up to the Mag SC?

    Thanks for input!

    • Nick

      Brian, the short answer really is…Yes, it’s a waste with an electronic throttle controller…unless you are getting a snorkle

      • Brian

        Why does the snorkel make a difference ?

        • Nick

          I should have specified – You won’t see any real HP or MPG gains from a snorkel either, but, You will be able to Ford the River Oregon Trail Style, which is definitely an overall performance enhancement in its own right in my opinion.

  • Bill

    Just installed CAI on my 2015 Trail Prem after a 3 month +/- wait for delivery. Sounds much better but not obnoxious, seems to have a little more power – less pedal required on interstate inclines. Install was pretty straight forward, just go more by the step-by-step in this website than the instructions that come with the intake. Biggest improvement was the Pedal Commander, which made the 4runner much more responsive.
    As for MPG, I am used to a constant 18.1 mpg. Haven’t driven far enough yet to get a stable reading but am staying above 18 and am still pushing it for the fun of it.

  • Adam

    I have a Magnuson SC on my 2018 TRD Pro would the TRD CAI still link up to the SC or would that be a no go?

  • Matt

    I talked to Gary at the parts Dept. in Roseville Ca. (where I bought my 2019 TRD ORP) and they gave me a part number of PTR03-35160 any idea what the difference is between that and the PTR03-89100?

    I see both listed online but of course nothing is listed for a 2019 (yet)

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