• Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L L4 Engine
  • Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L L4 Engine
  • Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L L4 Engine
  • Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L Engine - Toyota 4Runner 1996-1999 driving fast

Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L Engine

$99.99
$99.99
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Optimize Airflow and Throttle Response for Your 3RZ-FE Toyota 4Runner

Who It’s For: Designed specifically for Toyota 4Runner and Tacoma owners running the 3RZ-FE engine. Whether you are daily driving or hitting the trails, this is for the enthusiast who wants more life out of their four-cylinder workhorse.

The Problem: The stock intake system on the 3RZ-FE is heavily baffled and restricted to reduce engine noise for the average consumer. This creates air turbulence and "chokes" the engine during high-load situations, which is a major drawback for a small displacement engine already tasked with moving a heavy SUV or truck frame.

The Solution: We engineered this intake to eliminate the factory restrictions of the 3RZ-FE, replacing the accordion-style plastic tubing with smooth, mandrel-bent 6061-T6 aluminum. This ensures a laminar air flow directly into the throttle body, delivering more oxygen for better combustion and a noticeable improvement in mid-range torque.

Why This is the Ultimate Upgrade

  • Enhanced Power Delivery: Real-world gains of up to 10% in horsepower and torque by reducing pumping losses and improving volumetric efficiency.
  • High-Grade Construction: Built with 6061-T6 lightweight aluminum piping that resists heat soak better than thinner alloys, ensuring cooler intake charges.
  • Serviceable Design: Includes a high-flow, washable cotton-media filter that only requires cleaning every 50,000 miles, making it the last filter you’ll ever buy for this rig.

Technical Specifications

Fitment 1995-1999 Toyota 4Runner & Tacoma
Engine Family 3RZ-FE
Factory Ratings 150 HP & 177 lb-ft Torque
Transmission Fitment Compatible with Automatic & Manual

Compatibility & OEM Reference

Fits the Following Vehicles:

  • 1996-1999 Toyota 4Runner 2.7L L4 Engine
  • 1995-1999 Toyota Tacoma 2.7L L4 Engine

Interchange Part Numbers:

1996, 1997, 1998, 1999, 1995, 2.7, L4, 3RZ-FE, T304

The Performance Promise

Buy with confidence. As a specialist who has spent years under the hoods of these Toyotas, I can tell you that the 3RZ-FE responds incredibly well to better breathing. This kit includes everything needed for a 60-minute bolt-on installation. We recommend disconnecting the battery during install to allow the ECU to relearn the new fuel trims for the increased airflow. Backed by real automotive experts and fast shipping.

Fitment

Make

Toyota

Engine Size
  • 2.7L

Year
  • 1996
  • 1997
  • 1998
  • 1999

Installation & Tools

The Wrench Time

  • Estimated Time: 45-60 Minutes
  • Difficulty: 3/10 - Straightforward bolt-on installation on your 3rd Gen T4R, requiring basic hand tools and careful handling of aging electrical connectors.

Tools You Will Need

  • 10mm socket and 1/4-inch ratchet (for battery terminal and hose clamps)
  • 12mm deep socket with 6-inch extension (for factory airbox mounting bolts)
  • #2 JIS screwdriver or precision cross-head screwdriver (for factory MAF sensor screws)
  • Flathead screwdriver or 8mm nut driver (for aftermarket intake coupler clamps)
  • Needle-nose pliers (for OEM vacuum spring clamps)
  • Mass Air Flow sensor cleaner and clean microfiber towel (optional, for maintenance while uninstalled)
Mechanic’s Pro Tip (The "Gotcha"):
The factory screws securing the Mass Air Flow (MAF) sensor to the OEM airbox lid on the 1996-1999 Toyota 4Runner 2.7L (3RZ-FE engine) are Japanese Industrial Standard (JIS), not standard Phillips. After decades of heat cycles, they seize tight. Grabbing a standard worn Phillips screwdriver will immediately strip the heads. Use a dedicated #2 JIS bit or tap the screwdriver handle gently with a mallet while applying firm downward pressure to break the corrosion bond without ruining the sensor housing. Additionally, the factory vacuum lines running to the fuel pressure regulator and EVAP system are notoriously brittle—twist them gently to break the crust before pulling, or they will snap flush.

Phase 1: Removing the Factory Part

  1. Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to prevent check engine lights and clear the short-term fuel trim memory on your 1996-1999 Toyota 4Runner 2.7L.
  2. Disconnect the MAF Sensor Harness: Depress the locking tab on the factory MAF sensor connector located on the air cleaner lid and gently pull the plug free. Do not yank the wiring harness directly.
  3. Disconnect Vacuum and PCV Lines: Using needle-nose pliers, squeeze and slide back the tension clamps on the crankcase breather tube and the vacuum lines attached to the factory resonator elbow. Twist each hose gently to break the seal before pulling them off the OEM intake tract.
  4. Loosen OEM Intake Tube Clamps: Use a 10mm socket or flathead screwdriver to loosen the hose clamp connecting the factory rubber intake elbow to the throttle body, as well as the clamp securing the tube to the airbox housing. Pull the aging rubber tube away from the throttle body.
  5. Unbolt the Factory Airbox: Remove the three mounting bolts securing the lower air cleaner housing to the inner fender apron using a 12mm deep socket and 6-inch extension. Lift the entire lower box assembly and air filter out of the 1996-1999 Toyota 4Runner 2.7L engine bay and set it aside.

Phase 2: Installing the Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L Engine

  1. Transfer the Factory MAF Sensor: Carefully back out the two retaining screws from the stock airbox lid using a #2 JIS screwdriver. Gently slide the MAF sensor straight out without touching the delicate hot-wires inside. Seat the sensor into the aftermarket intake pipe adapter, ensuring the rubber O-ring gasket creates an airtight seal, and secure it with the provided hardware using an 8mm socket or the supplied hex key. Tighten snugly—do not overtighten and crack the sensor flange.
  2. Mount the Heat Shield Assembly: Lower the aftermarket heat shield or mounting bracket into the passenger-side engine bay location previously occupied by the stock box. Secure the shield to the factory threaded inner-fender chassis holes using the factory hardware with a 12mm socket.
  3. Install Throttle Body Coupler and Intake Pipe: Slide the silicone coupler onto the throttle body and secure it loosely with a flathead screwdriver and an 8mm nut driver. Slide the intake pipe into the coupler, aligning the MAF port facing upward and the vacuum bungs toward the valve cover. Tighten the throttle body clamp securely once aligned.
  4. Reconnect Vacuum Lines and Air Filter: Reconnect the PCV breather and vacuum hoses onto the intake pipe barbs, securing them with your needle-nose pliers. Slip the high-flow air filter over the end of the intake pipe inside the heat shield area and tighten the worm gear clamp using an 8mm nut driver. Reattach the electrical harness plug to the MAF sensor until you hear a positive click.
  5. Initial Startup and ECU Idle Relearn: Reconnect the negative battery terminal using a 10mm wrench. Turn the ignition key to the ON position for 5 seconds, then crank the 3RZ-FE engine. Crucial: Do not touch the gas pedal for at least 20 to 30 seconds upon initial startup. Allow the ECU to adapt and establish base idle airflow parameters uninterrupted before driving.

Disclaimer: This is a general guide provided for the 1996-1999 Toyota 4Runner 2.7L. Always refer to your factory service manual for exact torque specifications and safety procedures.

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]
Cold Air Intake for Toyota 4Runner (1996-1999) 2.7L Engine

$99.99