Ignition Coil & Iridium Spark Plugs for Chrysler 300 (2011-2023) 3.6L

Direct-Replacement Ignition Coil & Iridium Spark Plugs for 2011-2023 Chrysler 300 (3.6L Pentastar / LD)

Restores lost power and eliminates misfires: Replaces degraded factory coils and worn plugs to deliver a consistent, high-voltage spark for optimal combustion efficiency.

The Stock 300 Thermal Breakdown

Over time, the factory ignition coils on the 3.6L Pentastar V6 are subjected to severe thermal cycling within the engine bay. This constant heat soak breaks down the internal epoxy potting and primary winding insulation, leading to voltage leaks and weak spark delivery. Simultaneously, standard or worn OEM spark plugs experience electrode erosion, widening the spark gap beyond factory specifications. This combination results in delayed flame propagation, incomplete combustion, rough idling, hesitation under heavy throttle, and increased fuel consumption. In severe cases, the degraded coils will trigger P0300-series random misfire codes, significantly compromising drivability and potentially damaging downstream catalytic converters if left unaddressed.

The Engineering Solution

This ignition overhaul kit tackles the thermal breakdown of the OEM components head-on. The replacement ignition coils feature upgraded copper wiring and high-dielectric epoxy potting, specifically engineered to withstand extreme under-hood temperatures while ensuring maximum voltage transfer without internal arcing. Paired directly with these robust coils are premium Iridium spark plugs. The ultra-fine iridium center electrode requires less voltage to fire, ensuring a stable, concentrated spark even under high cylinder pressures. Because iridium is inherently highly resistant to spark erosion and heat oxidation, these plugs maintain a consistent gap over extended mileage. The result is a much faster, cleaner burn that restores factory throttle response, stabilizes idle quality, and maximizes the overall efficiency of the Pentastar engine.

Technical Specifications

Compatibility

• 2011-2023 Chrysler 300 Touring (3.6L V6)
• 2011-2023 Chrysler 300 Limited (3.6L V6)
• 2012-2023 Chrysler 300S (3.6L V6)
• 2013-2023 Chrysler 300C (3.6L V6 Models)

The Chrysler Caliber

Engineered to handle the heavy curb weight and cruising demands of this classic American sedan, these ignition components provide the reliable power delivery and smooth engine operation required for daily driving and cross-country touring without triggering a check engine light.