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

$149.95

Free Shipping within USA.

Guaranteed Fitment
Performance Tested
Lifetime Warranty

Want it soon? Order within

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"

Shop safely

Secure checkout with trusted payment providers.

Shop safely with us

Unlock the low-end torque and throttle snap your first-gen Tacoma has been hiding behind factory plastic.

High-Velocity Cold Air Induction System for 1999-2004 Toyota Tacoma (3.4L V6)

The 5VZ-FE 3.4L V6 is a bulletproof legend, but the factory intake tract is a mess of restrictive plastic baffles and a clunky "silencer" box designed to mute the engine. These components create massive air turbulence, which is why your Tacoma often feels sluggish when trying to pass on the highway or crawling up a steep grade. This system deletes those bottlenecks, replacing them with a smooth-bore T304 aluminum path that finally lets the V6 breathe.

By swapping out the heat-soaked factory air box for our shielded high-flow setup, you eliminate the "dead" feeling in the pedal. You'll notice the difference immediately when the engine no longer has to fight to pull air through the accordion-style stock tubing. Whether you're aired down on a trail or merging into traffic, the increased oxygen density ensures a cleaner, more energetic combustion cycle.

Technical Specifications

Fitment	1999–2004 Toyota Tacoma (All Trims)
Engine / Chassis Code	3.4L 5VZ-FE V6 / First Gen (N140/N150/N160/N170)
Material	Mandrel-Bent T304 Lightweight Aluminum
Installation Style	Direct Bolt-On; No Cutting or Drilling Required

Why You Need This Upgrade

Instant Throttle Response: Eliminates the factory resonator "lag," giving you a 1:1 feel between your foot and the engine's RPM.
Heat Soak Protection: The integrated thermal barrier keeps rising engine bay temps away from the intake charge, maintaining horsepower during slow-speed off-roading.
Towing & Grade Performance: Optimizes the air-to-fuel ratio to provide up to a 10% boost in torque, essential for hauling trailers or heavy overland gear.
Aggressive Induction Sound: Replaces the muffled stock vacuum sound with a deep, mechanical growl that only opens up when you're heavy on the gas.

Installation & Usage

This is a straightforward bolt-on project that takes about 45-60 minutes with basic hand tools. Crucial Tip: Disconnect the negative battery terminal before starting to force the ECU to "re-learn" the new, higher airflow maps upon startup. Ensure the engine is completely cool to the touch before reaching near the exhaust manifold area.

Stop settling for restricted performance and give your 3.4L the airflow it needs to dominate the trail and the tarmac.

Engine Safety Rating

Difficulty

Fitment

Make	Toyota
Engine Size	3.4L
Year	1999 2000 2001 2002 2003 2004

Installation & Tools

The Wrench Time

Estimated Time: 45-60 Minutes
Difficulty: 2/10 - Beginner friendly, basic hand tools needed.

Tools You Will Need

10mm socket and ratchet (The Toyota standard; you will use this for almost everything)
12mm socket (For any stray bracket bolts on the fender wall)
#2 Phillips screwdriver (Crucial for the MAF sensor screws)
Flathead screwdriver (For hose clamps)
Needle-nose pliers (For factory spring clamps on vacuum lines)
MAF Sensor Cleaner (Recommended while you have the sensor out)

Mechanic’s Pro Tip (The "Gotcha"):
On the 1999-2004 Toyota Tacoma 3.4L, the Mass Air Flow (MAF) sensor screws are notorious for stripping the plastic threads or seizing. Use a high-quality screwdriver and apply firm downward pressure when turning. Furthermore, the vacuum nipples on the factory intake resonator are likely brittle due to heat cycling. Be gentle when twisting off the rubber hoses, or you will be fishing for plastic shards in your vacuum lines.

Phase 1: Removing the Factory Part

Disconnect the Battery: Start by disconnecting the negative battery terminal using a 10mm socket. This resets the ECU so it can relearn the airflow from the new Cold Air Intake.
Disconnect the MAF Sensor: Locate the electrical harness on the air intake tube. Press the tab and pull the connector off. Use a Phillips screwdriver to carefully remove the two screws holding the MAF sensor in. Pull the sensor straight out and set it in a safe, clean place. Do not touch the bulb/wires.
Remove Vacuum Lines: Using your needle-nose pliers, slide the spring clamps back on the PCV breather hose and the fuel pressure regulator vacuum line connected to the factory intake tube. Twist the hoses gently to break the seal before pulling to avoid tearing the rubber.
Remove the Airbox & Resonator: Loosen the hose clamps at the throttle body and the airbox using a flathead screwdriver or 10mm socket. Remove the three bolts securing the airbox assembly to the fender well using a 12mm socket. Lift the entire factory intake assembly (including the bulky silencer/resonator box) out of the engine bay.

Phase 2: Installing the Cold Air Intake for Toyota Tacoma (1999-2004) 3.4L V6

Install the Couplers: Place the silicone reducer coupler onto the throttle body. Secure it loosely with a hose clamp using a flathead screwdriver. Do not overtighten yet; you need wiggle room to align the tube.
Transfer the MAF Sensor: Insert your factory MAF sensor into the new aluminum intake pipe. IMPORTANT: Ensure the O-ring is seated correctly to prevent air leaks (P0171 Lean Code). Secure it using the provided hardware and a Phillips screwdriver. Do not over-torque these small screws.
Mount the Intake Pipe: Slide the pipe into the throttle body coupler. Align the mounting bracket on the pipe with the factory vibration isolation mount on the engine shield. Connect the provided vacuum hoses to the nipples on the pipe.
Filter Installation: Slide the high-flow conical filter onto the end of the pipe. Tighten the filter clamp with a flathead screwdriver or 8mm socket until snug. Now, go back and tighten the throttle body clamps.
Re-check and Start: Double-check that the MAF sensor is plugged back in and all vacuum lines are secure. Reconnect the negative battery terminal with your 10mm socket. Start the engine. Do not touch the gas pedal for 20-30 seconds; allow the 5VZ-FE ECU to stabilize its idle and adjust to the increased airflow.

Disclaimer: This is a general guide provided for the ["1999","2000","2001","2002","2003","2004"] ["Toyota"] ["Tacoma"] ["3.4L"]. Always refer to your factory service manual for exact torque specifications and safety procedures.