Cold Air Intake for Mitsubishi Lancer (2002-2007) 2.0L Engine
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Sharpen Throttle Response for the 2002-2007 Mitsubishi Lancer 4G94
Who It’s For: Designed specifically for Mitsubishi Lancer owners running the 2.0L 4G94 engine family who want more than just a commute; they want a more connected driving experience.
The Problem: The stock intake on the 4G94 is built for silence, not speed. It uses a restrictive plastic air box and corrugated rubber tubing that creates air turbulence and heat soak. This design chokes the engine’s ability to breathe, especially during spirited driving or under load.
The Solution: We engineered this cold air intake system to replace the factory bottleneck with smooth-bore T304 aluminum. By providing a more direct path to the manifold, we eliminate the turbulence inherent in the stock 4G94 setup, allowing the engine to pull in a higher volume of oxygen for better combustion and a much more aggressive engine note.
Why This is the Ultimate Upgrade
- Performance Gains: Delivers an increase in horsepower and torque by up to 10% by optimizing the air-to-fuel ratio and reducing intake restriction.
- Premium Construction: Built with T304 lightweight aluminum piping that resists corrosion and looks professional under the hood compared to factory plastic.
- Maintenance-Free Filtration: Features a high-flow washable filter that only requires cleaning every 50,000 miles, eliminating the need for expensive paper filter replacements.
- Direct Fitment: Designed to install in less than 60 minutes using basic hand tools. It utilizes factory mounting points and will not void your vehicle’s warranty.
Technical Specifications
| Fitment | 2002-2007 Mitsubishi Lancer |
| Engine Family | 4G94 SOHC 2.0L |
| Factory Ratings | 120 HP & 130 lb-ft Torque |
| Material | T304 Lightweight Aluminum |
Compatibility & OEM Reference
Fits the Following Vehicles:
- 2002 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
- 2003 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
- 2004 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
- 2005 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
- 2006 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
- 2007 Mitsubishi Lancer 2.0L L4 (Automatic & Manual)
Interchange Reference:
2.0L L4 Engine Cold Air Intake System, T304 Aluminum Intake Mitsubishi Lancer 02-07
The Performance Promise
Buy with confidence. As specialists in the 4G-series engine platforms, we know exactly what these Lancers need to wake up. This kit provides the airflow necessary for better fuel economy and a throatier, sporty sound without the headache of custom fabrication. Backed by real automotive expertise and fast shipping.
Fitment
Fitment
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Installation & Tools
Installation & Tools
The Wrench Time
- Estimated Time: 45-60 Minutes
- Difficulty: 3/10 - Straightforward bolt-on procedure with basic hand tools.
Tools You Will Need
- 10mm open-end wrench (battery disconnect & hardware)
- 10mm socket with 1/4-inch or 3/8-inch drive ratchet
- 6-inch ratchet extension (to reach lower airbox chassis bolts)
- 12mm socket (for chassis support bracket)
- Flathead screwdriver or 8mm nut driver (for worm-gear hose clamps)
- Pliers (for factory PCV/breather spring clamp)
The 4G94 engine in the CS6A chassis uses a sensitive Karman Vortex Mass Air Flow (MAF) sensor housed inside the factory airbox lid. Never poke, spray harsh solvent, or drop this sensor. When bolting the aftermarket MAF adapter plate to the factory sensor body, hand-thread all four bolts first before torquing to prevent cross-threading the soft cast-aluminum housing, and ensure the rubber O-ring seal sits completely flat to prevent unmetered false-air leaks.
Phase 1: Removing the Factory Airbox on the 2002-2007 Mitsubishi Lancer 2.0L
- Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench. This resets ECU fuel trims and prevents electrical shorts or accidental check engine lights.
- Unplug the MAF Sensor: Depress the locking tab on the MAF harness connector located at the top of the airbox. Gently slide the connector off the sensor. If the plastic is heat-brittle, use a flathead screwdriver to gently lift the release clip without snapping it.
- Disconnect Breather & Throttle Body Tube: Using pliers, squeeze and slide back the spring clamp securing the valve cover breather hose to the intake tube. Loosen the factory hose clamp at the throttle body using a flathead screwdriver or 8mm nut driver, then pull the rubber accordion tube off the throttle body.
- Remove OEM Airbox Assembly: Unbolt the two airbox hold-down bolts from the inner fender/frame rail using a 10mm socket and 6-inch ratchet extension. Pull the complete upper and lower airbox assembly out of the engine bay.
- Separate the MAF Sensor: Unbolt the four factory bolts securing the MAF sensor housing to the OEM airbox lid using a 10mm socket. Carefully set the MAF sensor and its rubber gasket aside on a clean rag.
Phase 2: Installing the Cold Air Intake for Mitsubishi Lancer (2002-2007) 2.0L Engine
- Assemble MAF Adapter: Bolt the aftermarket intake adapter plate to the factory Mitsubishi MAF housing using the supplied hardware, ensuring the rubber seal is seated firmly in its groove. Tighten down evenly in a cross-pattern using a 10mm wrench or appropriate hex key.
- Mount Throttle Body Coupler: Slide the silicone straight or reducer coupler onto the 2002-2007 Mitsubishi Lancer 2.0L throttle body. Slide two hose clamps into position and tighten only the throttle body side using an 8mm nut driver.
- Position Intake Pipe & Bracket: Insert the new aluminum intake tube into the throttle body coupler. Align the welded mounting bracket to the factory chassis ground or airbox mounting point. Thread the mounting bolt in using a 10mm socket or 12mm socket with rubber isolation grommets installed to dampen engine vibrations.
- Connect MAF, Filter, & Breather: Connect the MAF assembly to the intake pipe coupler and secure the cone air filter to the end of the intake tract with an 8mm nut driver. Reattach the valve cover breather hose to the intake nipple, securing it with the factory spring clamp using pliers. Reconnect the MAF electrical harness until it audibly clicks.
- ECU Idle Relearn: Reconnect the negative battery terminal using a 10mm wrench. Start the engine, but DO NOT touch the gas pedal for at least 20 seconds. Allow the 4G94 ECU to establish a baseline idle and adjust to the increased airflow volume before revving or test driving.
Disclaimer: This is a general guide provided for the 2002-2007 Mitsubishi Lancer 2.0L. Always refer to your factory service manual for exact torque specifications and safety procedures.
Warranty
Warranty
All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

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$84.95