Ignition Coil and Iridium Spark Plugs for Honda Civic (2012-2015) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2012-2015 Honda Civic 2.4L

What it Does: Replaces degraded factory coil packs and worn spark plugs to eliminate high-RPM misfires, restore clean combustion, and stabilize idle across the K24 powerband.

The Stock Civic Secondary Ignition Breakdown

The high-revving K24Z7 engine operates at elevated cylinder head temperatures that accelerate thermal degradation in the factory coil-on-plug boots and epoxy insulation. Over time, heat cycling breaks down the internal primary and secondary copper windings, causing dielectric breakdown, micro-arcing, and intermittent hesitation under load. Simultaneously, standard nickel or worn factory plugs suffer from widened electrode gaps, requiring higher secondary voltage that further strains aging coil drivers and triggers P0300-P0304 fault codes.

The Engineering Solution

This comprehensive ignition service kit features high-density internal copper windings engineered to resist thermal degradation and provide high dielectric resistance under extended VTEC operation. Matched fine-wire iridium spark plugs lower the required ionization voltage, ensuring crisp arc propagation and complete flame-front propagation even at elevated RPM. Featuring direct-fit blade terminals, thermal-resistant silicone boots, and factory-matched resistance values, this set drops directly into place without ECM calibration adjustments.

Technical Specifications

Compatibility

• 2012 Honda Civic Si 2.4L L4 (FB6 / FG4)
• 2013 Honda Civic Si 2.4L L4 (FB6 / FG4)
• 2014 Honda Civic Si 2.4L L4 (FB6 / FG4)
• 2015 Honda Civic Si 2.4L L4 (FB6 / FG4)

The Honda K-Series Standard

Engineered to meet the stringent electrical demands of Honda's high-revving i-VTEC valvetrain, these ignition components ensure instantaneous throttle response and dependable high-RPM spark stability without false misfire codes.