Catalytic Converter for Mitsubishi Lancer (2002-2003) 2.0L Front

Direct-Fit Front Manifold Catalytic Converter for 2002-2003 Mitsubishi Lancer (CS6A)

What it Does: The Front Manifold Catalytic Converter replaces the cracked or degraded OEM exhaust manifold on the 2002-2003 Lancer to restore factory emissions control, resolve P0420 trouble codes, and eliminate exhaust leaks.

The Stock Mitsubishi Lancer Exhaust Manifold Cracking Problem

The factory integrated exhaust manifold and converter assembly on the CS6A chassis running the 4G94 engine is notorious for severe thermal fatigue. Constant thermal expansion cycles, engine movement, and vibrational stress cause micro-fissures around the runner merge collector and upper flange. Concurrently, high-mileage washcoat degradation and ceramic substrate attrition trigger recurring check engine lights (DTC P0420), unmetered exhaust leaks, skewed pre-catalyst O2 sensor signals, and failed state emissions inspections.

The Engineering Solution

Engineered as a direct replacement for OE part number MR299372, this unit integrates heavy-duty cast/tubular construction reinforced with precise, robotic TIG welds designed to mitigate stress-induced cracking. The internal ceramic substrate features a high-density cell matrix loaded with an advanced precious metal washcoat to efficiently oxidize unburned hydrocarbons and carbon monoxide into inert emissions. Thick, precision-machined mating flanges resist warping under sustained exhaust gas temperatures, while pre-threaded oxygen sensor bungs maintain factory wiring harness geometry without modification.

Technical Specifications

Compatibility

• 2002 Mitsubishi Lancer ES (2.0L L4 - 4G94)
• 2002 Mitsubishi Lancer LS (2.0L L4 - 4G94)
• 2002 Mitsubishi Lancer OZ Rally (2.0L L4 - 4G94)
• 2003 Mitsubishi Lancer ES (2.0L L4 - 4G94)
• 2003 Mitsubishi Lancer LS (2.0L L4 - 4G94)
• 2003 Mitsubishi Lancer OZ Rally (2.0L L4 - 4G94)

Frequently Asked Questions

Does this fit the CS6A Lancer?

Yes, this is a direct fit for the 2002-2003 Mitsubishi Lancer equipped with the 4G94 engine.

Will this direct-fit unit clear an active P0420 fault code?

Yes, replacing an exhausted factory catalyst with this fresh high-efficiency substrate restores catalyst oxygen storage capacity and eliminates the P0420 code once drive cycles are completed.

The Mitsubishi Reliability Standard

Designed to preserve proper scavenging velocities across the 4G94 powerband, this manifold ensures factory exhaust acoustic suppression and reliable daily performance for your sport compact platform.