Ignition Coil and Iridium Spark Plugs for Mitsubishi Lancer (2004-2006) 2.4L

Direct-Replacement Ignition Coils and Iridium Spark Plugs for 2004-2006 Mitsubishi Lancer

What it Does: Restores proper combustion and eliminates misfires by replacing degrading factory ignition coils and worn spark plugs with precisely matched, high-output electrical components.

The Stock Lancer Ignition Weakness

The 4G69 2.4L MIVEC engine is notorious for breaking down ignition coil epoxy over extended heat cycles, leading to micro-cracking in the coil boots and plastic housings. As the primary and secondary windings degrade due to continual heat soak, internal electrical resistance increases, resulting in severely reduced spark energy. This degradation typically manifests as rough idling, severe hesitation under heavy engine load, and intermittent P0300 to P0304 misfire diagnostic trouble codes. Furthermore, worn factory spark plugs exacerbate this issue by requiring exponentially higher voltage to bridge the widened electrode gap, which directly accelerates premature coil failure.

The Engineering Solution

This complete ignition overhaul kit utilizes high-dielectric epoxy and thermal-resistant polyurethane boots to heavily insulate the coil windings against severe engine bay temperatures. By maximizing voltage output to the spark plugs, the system ensures a complete burn of the air-fuel mixture, even during high-rpm MIVEC camshaft profile transitions. The included spark plugs feature an ultra-fine iridium center electrode, offering superior electrical conductivity and a substantially higher melting point compared to standard platinum or copper variants. This design requires less firing voltage from the coils while delivering a highly concentrated spark front. The result is restored factory throttle response, stabilized idle vacuum, optimized fuel efficiency, and long-term electrical durability.

Technical Specifications

Compatibility

• 2004 Mitsubishi Lancer 2.4L
• 2005 Mitsubishi Lancer 2.4L
• 2006 Mitsubishi Lancer 2.4L

The Mitsubishi Precision

Maintaining the precise electrical tolerances of the 4G69 engine ensures optimal MIVEC engagement, delivering the reliable, consistent power curve and responsiveness expected from a properly tuned JDM platform.