Cold Air Intake for Mitsubishi Galant (1999-2003) 2.4L (4G64) 3.0L (6G72) Engines

$89.95

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

Improve Airflow and Throttle Response for Mitsubishi Galant & Eclipse Sirius and Cyclone Engines

Who It’s For: Designed specifically for Mitsubishi Galant and Eclipse owners running the Sirius 4G64 or Cyclone 6G72 engines who want to move past the limitations of factory-silenced air induction.

The Problem: The factory air box in the 4G64 and 6G72 setups was engineered for silence over performance. Between the restrictive plastic resonators and the corrugated rubber piping, the air enters the intake manifold with significant turbulence. For the Sirius 4G64, this often results in a "lazy" mid-range, while the Cyclone 6G72 V6 feels choked out as it tries to breathe through the narrow stock apertures at higher RPMs.

The Solution: We engineered this cold air intake system to correct the factory design flaws, delivering reliable performance by replacing the entire restrictive assembly with T304 lightweight aluminum. This allows the Cyclone engine to pull air through a high-velocity path, reducing pumping losses and giving you the crisp throttle response and deep, throaty intake growl that these Mitsubishi powerplants are known for.

Why This is the Ultimate Upgrade

Optimized Velocity: The T304 aluminum mandrel-bent piping reduces air turbulence, resulting in gains of up to 10% in horsepower and torque depending on your current tuning.
Advanced Thermal Management: Unlike stock plastic that can retain heat, the lightweight aluminum piping helps dissipate heat quickly, ensuring a cooler air charge enters the engine.
Serviceable High-Flow Filter: Includes a washable, reusable synthetic filter that provides exceptional filtration while allowing significantly more CFM than the stock paper element.

Technical Specifications

Fitment	1999-2005 Mitsubishi Galant & Eclipse
Engine Family	Sirius (4G64) & Cyclone (6G72)
Factory Ratings	4G64: ~140-150 HP / 6G72: ~200-210 HP
Transmission Fitment	Compatible with Automatic and Manual Transmissions

Compatibility & OEM Reference

Fits the Following Vehicles:

2000-2005 Mitsubishi Eclipse 2.4L 4-cyl (4G64)
2000-2005 Mitsubishi Eclipse 3.0L V6 (6G72)
1999-2003 Mitsubishi Galant 2.4L 4-cyl (4G64)
1999-2003 Mitsubishi Galant 3.0L V6 (6G72)

Interchange & Identification:

4G64-S4, 6G72-V6, T304-MIT-GA-01, 1999, 2000, 2001, 2002, 2003, 2004, 2005

The Performance Promise

Real-World Testing: As a specialist who has spent years under the hoods of Eclipses and Galants, I recommend resetting your battery terminal for 30 seconds after installation. This allows the ECU to recalibrate the fuel trims for the increased air volume provided to the Sirius or Cyclone engine. Expect a straightforward 60-minute installation with basic hand tools.

Buy with confidence. Backed by real automotive experts and fast shipping.

Engine Safety Rating

Difficulty

Fitment

Make	Mitsubishi
Engine Size	2.4L 3.0L
Year	1999 2000 2001 2002 2003

Installation & Tools

The Wrench Time

Estimated Time: 45-60 Minutes
Difficulty: 3/10 - A straightforward driveway bolt-on, but requires strict care when handling the sensitive factory airflow sensor.

Tools You Will Need

10mm and 12mm sockets
6-inch socket extension and ratchet
10mm wrench
8mm nut driver or Flathead screwdriver
Pliers
Penetrating fluid (like PB Blaster or WD-40)

Mechanic’s Pro Tip (The "Gotcha"):
The 8G Galant community on TGC knows this pain well: the factory Mitsubishi Karman Vortex MAS (Mass Airflow Sensor) has a highly delicate internal honeycomb screen. DO NOT poke it, push on it, or try to wipe it clean. If you damage that honeycomb during the transfer, your 4G64 or 6G72 will suffer from massive idle surge and stalling. Also, pre-soak the 10mm radiator support bolts holding the factory air snorkel with penetrating fluid—they love to snap after 20 years of heat cycling.

Phase 1: Removing the Factory Part

Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to prevent check engine lights and safeguard the ECU.
Unplug the MAS: Carefully depress the plastic tab on the Mass Airflow Sensor wiring harness and pull straight back to unplug it. Tuck the wire out of the way.
Disconnect the Vacuum Lines: Using your pliers, squeeze the factory spring clamps and slide them backward down the hoses. Gently twist and pull the rubber breather hoses off the factory intake tube. Be gentle; the 20-year-old plastic nipples on the OEM tube are brittle and will snap if forced.
Loosen the Throttle Body Clamp: Use your flathead screwdriver to loosen the large hose clamp securing the factory rubber intake hose to the throttle body.
Extract the Factory Airbox: Using your 10mm socket and 12mm socket on a 6-inch extension, remove the mounting bolts holding the lower airbox and front snorkel to the chassis. Lift the entire bulky assembly out of your 1999-2003 Mitsubishi Galant 2.4L 3.0L engine bay.
Salvage the MAS: Using a 10mm socket, unbolt the factory mass airflow sensor from the OEM airbox housing. Set it in a safe, clean location where it won’t roll off the bench.

Phase 2: Installing the Cold Air Intake for Mitsubishi Galant (1999-2003) 2.4L 3.0L

Prep the MAS Adapter: Bolt your factory mass airflow sensor to the new cold air intake pipe or adapter plate using the provided hardware and a 10mm socket. Double-check that the directional airflow arrow stamped on the sensor is pointing toward the throttle body.
Install the Throttle Body Coupler: Slide the provided silicone coupler over the throttle body. Slide two hose clamps over the coupler, and tighten the inner clamp down snug using your 8mm nut driver.
Route the New Intake Pipe: Carefully lower the new intake tubing into the engine bay, ensuring it clears the battery tray and wiring harnesses. Push the top end into the throttle body silicone coupler and tighten the second hose clamp.
Reconnect Hoses and Wiring: Push your factory vacuum and breather hoses onto the new intake tube’s welded aluminum fittings. Secure them with the factory spring clamps using your pliers. Plug the MAS wiring harness back into the sensor until you hear a solid click.
Mount the Filter: Slide the new high-flow pod filter onto the end of the cold air intake pipe and tighten the clamp with your 8mm nut driver. Verify the filter isn’t rubbing against the chassis or lower plastics to prevent wear holes.
The ECU Relearn Startup: Reconnect the negative battery terminal with your 10mm wrench. Turn the key and start the engine. CRITICAL: Do not touch the gas pedal for at least 20 seconds. Allow the ECU to adjust to the new, higher volume of airflow and establish a steady idle.

Disclaimer: This is a general guide provided for the 1999-2003 Mitsubishi Galant 2.4L 3.0L. Always refer to your factory service manual for exact torque specifications and safety procedures.