TRD Cold Air Intake Install 5th Gen

 In 5th Gen 4Runner Mods, Aftermarket Install, T4R Accessories, Trail 4Runner Photos, Trail T4R, TRD Pro Parts

TRD Cold Air Intake (CAI) Install 5th Gen 4runner

TRD Cold Air Intake CAI Install - 5th Gen 4Runner

Step By Step TRD Cold Air Intake Installation on 4Runner

The TRD Cold Air Intake (CAI) is finally on the 4Runner!! It was a much easier job than I anticipated. This is a step by step walkthrough guide and tutorial on installing a TRD Cold Air Intake (CAI) on the 5th Generation 4Runner, specifically 2014.

For price and availability, check out Amazon. 

There was a lot of comments on the forums talking about the TRD Cold Air Intake not being compatible on the 2014 4Runner but we put the talk to rest. The TRD Cold Air Intake does fit on the 2014 4Runner as well as 2015, 2016, 2017, 2018 and above.

The whole process from start to finish took about 2.5-3 hours, and this was with two people. If you are doing this on your own, I would say you would be looking at 4 hours. The only difficult part about installing the TRD Cold Air Intake was the electrical wiring.

Separating the wires and rerouting them along with the loom, was really the only detailed part about this whole process and even that was pretty easy. I think installing the 4Runner Magnaflow Exhaust was more of a pain in the add than the TRD Cold Air Intake. Above all, I think a Cold Air Intake along with an Exhaust are among the two easiest 4Runner Aftermarket Accessories for performance to install. Next will be TRD 4Runner Brakes and then a TRD Supercharger when they come out with one for the 5th Gen 4Runner.

CAI Install – Step 1 – Pop off the Plastic Engine Cover with T logo

There are a few plugs that the cover snaps into, just gently pop them off all the way around. I think there were about 5 of them.

TRD Cold Air Intake Install - Step 1

CAI Install – Step 2 – Remove Brackets & Screws

This may be the most time intensive part of the install. Removing the bulky, clunky portion of the air box requires removing all brackets and screws noted and circled below.

CAI Install - Step 2 - Remove Brackets & Screws

CAI Install – Step 3 – Remove Air Box Brackets

There are a total of thee brackets that are attached to the lower and upper air box. Grab a screwdriver and pop them off.

CAI Install - Step 3 - Remove Air Box Brackets

CAI Install – Step 4 – Remove Upper Air Box

Once the upper airbox clamps are off, you ca remove the OEM upper airbox.

CAI Install - Step 4 - Remove Upper Air Box

CAI Install – Step 5 – Unscrew/Mount Lower Air Box

Remove the lower airbox by unscrewing the lower screws and one bracket on the outside of the box.

CAI Install - Step 5 - Remove Lower Air Box

CAI Install – Step 6 – Pull Out Lower Air Box

Make sure to tuck all your wires connected to the lower/upper airbox in a secure location. You will need to reuse these wires again to line the MAF (Mass Airflow Sensor).

CAI Install - Step 6 - Pull Out Lower Air Box

CAI Install – Step 7 – Electrical Wire Separation

This portion is the most “complicated” of the install process. I say “Complicated” because it’s really not that hard. It just takes a bit of patience.

CAI Install - Step 7 - Electrical Wire Separation

CAI Install – Step 7A – Electrical Wire Separation & Tape

  1. Remove all the electrical tape from the MAF hub
  2. Use a razor blade or sharp knife to slice open the connection tape
  3. Be careful to not slice into any wires
  4. Once sliced open, remove excessive electrical tape
  5. Start separating MAF (Mass Airflow Sensor) wires from other wires
  6. Pull MAF wires down to the bottom where they draw from

CAI Install - Step 7A - Electrical Wire Separation

CAI Install – Step 7B – Electrical Wire Separation, Split loom & Tape

  1. Separate the MAF wires from bundled wires and loom completely
  2. Make sure to bunch up both sections of wires and keep it tight
  3. Wrap electrical tape around each section of wires
  4. Re-loom both sections of wire
  5. Loom sections looking clean and tight
  6. Wrap loom with electrical tape and seal up

CAI Install - Step 7B - Electrical Wire Separation

CAI Install – Step 8 – THE INTAKE INSTALL

CAI Install - Step 8 - THE INTAKE INSTALL

CAI Install – Step 9 – Inserting Both Male Connections into Coupler

Inserting both of the male connections into the TRD intake coupler. This part takes some muscle grease. You don’t want to use any chemicals to help with pressing in the male connections because you don’t want any chemicals running through your engine. So keep the grease, lube and even WD-40 off the table and use your good ol’ muscle grease. Pictured here, you can see the pressure needed to push these male connections in.

CAI Install - Step 9 - Inserting Both Male Connections into Coupler

CAI Install – Step 10 – Inserting Intake Coupler #1

Position the TRD intake coupler with male connections facing the cab so you can connect the OEM tubing.

CAI Install - Step 10 - Inserting Intake Coupler #1

CAI Install – Step 11 – Remove Plastic Piece from Tubing

Remove the plastic OEM tubing.

CAI Install - Step 11 - Remove Plastic Piece from Tubing

CAI Install – Step 12 – Attach Tubing to Coupler

Attach the new male connection to the OEM tubing.

CAI Install - Step 12 - Attach Tubing to Coupler

CAI Install – Step 13 – Remove OEM Tubing & Insert New Tubing

Remove the OEM tubing & insert new tubing (Provided by TRD in the TRD Intake Kit) back onto the OEM part.

CAI Install - Step 13 - Remove OEM Tubing & Insert New Tubing

CAI Install – Step 14- Connect Tubing and Zip Tie Tubing

Connect tubing to the additional male piece of the coupler and zip tie, tight (doesn’t need to be extremly tight).

CAI Install - Step 14- Connect Tubing and Zip Tie Tubing

CAI Install – Step 15 – Insert Airflow Accelerator

Insert the Airflow Accelerator into the open hole where the upper/lower airbox was located.

CAI Install - Step 15 - Insert Airflow Accelerator

CAI Install – Step 16 – Remove & Save OEM Grommets from Lower Airbox

The picture says it all.

CAI Install - Step 16 - Remove & Save OEM Grommets from Lower Airbox

CAI Install – Step 17 – Insert OEM Grommets into new Lower Airbox

Again, pretty self-explanatory.

CAI Install - Step 17 - Insert OEM Grommets into new Lower Airbox

CAI Install – Step 18 – Install and Mount New Lower Airbox

Using the OEM screws, screw the new TRD Intake lower airbox back down to the body.

CAI Install - Step 18 - Install and Mount New Lower Airbox

CAI Install – Step 19 – Drop in Air Filter & Attach New Box Clamps

Place the TRD Intake Air Filer into the lower airbox and attach new TRD Intake clamps.

CAI Install - Step 19 - Drop in Air Filter

CAI Install – Step 20 – Add Grommet & Filter Minder

NOTE: Don’t forget to add the grommet before adding the upper airbox down.

CAI Install - Step 20 - Add Grommet & Filter Minder

CAI Install – Step 21 – Remove OEM MAF (Mass Airflow) Sensor

Unscrew the OEM MAF (Mass Airflow Sensor) from the old airflow section.

CAI Install - Step 21 - Remove OEM MAF (Mass Airflow) Sensor

CAI Install – Step 22 – Install OEM MAF (Mass Airflow) Sensor on Air Inlet Tube

Screw down the MAF onto your new TRD Intake inlet tubing.

Install OEM MAF (Mass Airflow) Sensor on Air Inlet Tube

Important Note: Use Loctite Threadlocker Blue 242 from Loctite Adhesives to screw down the MAF. This just prevents from accidental loosening.

Install OEM MAF (Mass Airflow) Sensor on Air Inlet Tube

CAI Install – Step 23 – Connect Both Couplers, MAF & Tighten Connections

CAI Install - Step 23 - Connect Both Couplers & MAF

CAI Install – Step 24 – Double Check All Connections and Couplers

CAI Install - Step 24 - Double Check All Connections and Couplers

DONE

If you have any additional questions, comments or suggestions, please leave your comments below. Did we miss something? Please let us know. Thanks again for taking a look at our 5th Gen 4Runner TRD Intake Install.

Check it out below – This thing is a BEAST!!!

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