• Cold Air Intake for Toyota 4-Runner (1999-2004) 3.4L V6 Engine - Blue
  • Cold Air Intake for Toyota 4-Runner (1999-2004) 3.4L V6 Engine - Blue
  • Cold Air Intake for Toyota 4-Runner (1999-2004) 3.4L V6 Engine - Blue
  • Cold Air Intake for Toyota 4-Runner (1999-2004) 3.4L V6 Engine - Blue Default Title

Cold Air Intake for Toyota 4Runner (1999-2004) 3.4L V6 Engine - Blue

$169.95
$169.95
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Tired of your trusted Toyota 4Runner feeling sluggish off the line or gasping for air on inclines? Unlock the true potential of your 5VZ-FE engine and experience a noticeable surge in power and responsiveness with a simple, impactful upgrade.

Performance Cold Air Intake for Toyota 4Runner (1999-2004) 3.4L V6 (5VZ-FE) - Blue

The stock air intake system on your 1999-2004 Toyota 4Runner’s 3.4L V6 (5VZ-FE) is notorious for its restrictive design. The factory air box and convoluted intake tubing create significant airflow turbulence and restrict the volume of cold, dense air reaching your engine, hindering both horsepower and torque, especially under load or at higher RPMs.

This high-velocity Cold Air Intake system is specifically engineered to replace that bottleneck. By providing a streamlined, wider intake path and incorporating an integrated heat barrier, it ensures your engine draws in a larger volume of oxygen-rich, cooler air. This optimized airflow translates directly into a more efficient combustion cycle, delivering crisper throttle response and significant gains in power across the entire RPM range, whether you’re tackling rugged trails or cruising the highway.

Why You Need This Upgrade

  • Enhanced Power Output: Boost your 4Runner’s horsepower and torque by up to 10% by optimizing the air-to-fuel ratio with a consistent supply of cool, dense air, providing a noticeable power surge for towing, hauling, and off-road driving.
  • Immediate Throttle Response: Experience a more lively and direct connection to your engine. This system reduces intake lag and eliminates air turbulence, ensuring power is delivered the moment you press the accelerator.
  • Integrated Heat Barrier: Designed to isolate the air filter from radiant engine bay heat, this critical feature ensures your engine consistently receives cool, oxygen-rich air for maximum performance, especially during demanding conditions.

Technical Specifications

Fitment 1999-2004 Toyota 4Runner (3.4L V6 Engine)
Factory Stats Stock: 183 HP / 217 lb-ft
Installation Easy / 1-2 Hours (Basic Hand Tools)

Replaces These OEM Applications

Compatible Vehicles:

  • 1999 Toyota 4Runner (3.4L V6 Engine)
  • 2000 Toyota 4Runner (3.4L V6 Engine)
  • 2001 Toyota 4Runner (3.4L V6 Engine)
  • 2002 Toyota 4Runner (3.4L V6 Engine)
  • 2003 Toyota 4Runner (3.4L V6 Engine)
  • 2004 Toyota 4Runner (3.4L V6 Engine)

Upgrade Your Toyota 4Runner Today

Don’t let a restrictive stock intake hold back your capable 5VZ-FE engine. Unlock the full potential of your 3rd Generation Toyota 4Runner with this performance Cold Air Intake. Shop with confidence knowing that PerformanceChipTuning.com delivers the best intake parts with fast shipping and expert support.

Engine Safety Rating
Difficulty 

Fitment

Make

Toyota

Engine Size
  • 3.4L

Year
  • 1999
  • 2000
  • 2001
  • 2002
  • 2003
  • 2004

Installation & Tools

The Wrench Time for Your 1999-2004 Toyota 4Runner 3.4L

  • Estimated Time: 45-60 Minutes
  • Difficulty: 3/10 - A straightforward bolt-on, but requires delicate handling of aged 5VZ-FE plastics and the sensitive Mass Air Flow sensor.

Tools You Will Need

  • 10mm wrench and 10mm socket
  • 12mm socket with a 6-inch extension (for factory airbox mounting bolts)
  • #2 Phillips screwdriver (use a fresh, non-worn tip)
  • Flathead screwdriver or 8mm nut driver (for worm-gear clamps)
  • Needle-nose pliers (for factory vacuum line spring clamps)
  • 3mm or 4mm hex key (for supplied aftermarket MAF hardware)
Mechanic’s Pro Tip (The "Gotcha"):
The 3.4L 5VZ-FE community knows two major headaches when doing the ISR (Intake Silencer Removal) or swapping intakes: stripped MAF screws and brittle vacuum lines. The factory Phillips head screws holding the MAF sensor are notorious for seizing. Do not use a worn-out screwdriver or you will strip them immediately. Furthermore, the 20-plus-year-old factory vacuum hoses connected to the intake silencer boxes are incredibly prone to snapping. Twist them gently with pliers to break the heat-seal before attempting to pull them off.

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 de-energize the engine harness.
  2. Unplug and Remove the MAF Sensor: Carefully press the locking tab to unplug the wiring harness from the Mass Air Flow (MAF) sensor. Use a #2 Phillips screwdriver to apply firm, direct downward pressure while you remove the two screws securing it. Pull the sensor straight out and set it somewhere clean and safe where it won’t be dropped.
  3. Disconnect Vacuum Lines: Use needle-nose pliers to pinch and slide back the spring clamps on the factory vacuum lines connected to the plastic intake tube and resonator boxes. Gently twist and pull to free the hoses.
  4. Loosen the Clamps: Use a flathead screwdriver or 10mm socket to loosen the large hose clamps at the throttle body and the factory airbox lid. Wiggle and pull the bulky factory intake tube off the vehicle.
  5. Extract the Factory Airbox: Unclip the airbox lid and remove the factory panel filter. Use a 12mm socket and extension to remove the three mounting bolts securing the lower airbox bucket to the inner fender wall. Lift the entire assembly out of the engine bay.

Phase 2: Installing the Cold Air Intake - Blue

  1. Install the Heat Shield: Lower the new heat shield assembly into the space vacated by the factory airbox. Secure it to the factory inner-fender mounting points using the provided hardware and a 10mm socket.
  2. Mount the Silicone Couplers: Slide the silicone coupler over the factory throttle body. Slide two worm-gear clamps onto the coupler, and tighten the inner clamp down snug onto the throttle body using an 8mm nut driver. Leave the outer clamp loose.
  3. Transfer the MAF Sensor: Carefully insert your factory MAF sensor into the machined pad on your new blue intake tube. Ensure the factory O-ring is seated flush to prevent vacuum leaks. Secure it using the supplied aftermarket Allen bolts (usually requiring a 3mm or 4mm hex key). Do not over-torque these bolts to avoid cracking the plastic sensor housing.
  4. Route Lines and Mount the Filter: Push the blue intake tube into the throttle body coupler and tighten the outer clamp. Attach the provided vacuum hose from the engine port to the new aluminum fitting on the intake tube. Finally, slide the high-flow blue cone filter onto the end of the tube inside the heat shield and tighten the filter clamp with your 8mm nut driver. Reconnect the MAF sensor wiring harness.
  5. The 20-Second Relearn: Reconnect the negative battery terminal with your 10mm wrench. Start the vehicle, but do not touch the gas pedal for at least 20 seconds. The 1999-2004 Toyota 4Runner 3.4L ECU requires this un-interrupted idle time to adapt to the massive increase in airflow and properly relearn its base fuel trims.

Disclaimer: This is a general guide provided for the 1999-2004 Toyota 4Runner 3.4L. Always refer to your factory service manual for exact torque specifications and safety procedures.

Warranty

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Cold Air Intake for Toyota 4Runner (1999-2004) 3.4L V6 Engine - Blue

$169.95