Ignition Coil and Iridium Spark Plugs for Scion tC (2005-2010) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2005-2010 Scion tC

What it Does: Replaces degraded factory ignition coils and worn spark plugs with a complete, matched service set to eliminate misfires, stabilize idle, and restore proper combustion efficiency across the rev range.

The Stock tC Ignition Breakdown

The high thermal load within the compact cylinder head of the 2.4L 2AZ-FE engine accelerates the breakdown of factory coil epoxy and internal copper windings. Over time, thermal cycling induces micro-cracking in the primary and secondary winding insulation, causing dielectric breakdown, high-RPM spark blow-out, rough cold starts, and secondary ignition misfire codes (P0300-P0304). Standard worn electrodes increase required breakdown voltage, placing unnecessary electrical stress on aging coils.

The Engineering Solution

This comprehensive tune-up kit features four direct-fit coil-on-plug assemblies engineered with reinforced internal copper windings, durable dielectric housings, and heavy-duty blade terminals for maximum conductivity and thermal resistance. Paired with four fine-wire iridium spark plugs, the setup minimizes ignition voltage requirements while providing a focused, high-intensity spark kernel for complete fuel atomization and consistent combustion stability under load.

Technical Specifications

Compatibility

• 2005 Scion tC Base Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated
• 2006 Scion tC Base Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated
• 2007 Scion tC Base / Spec Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated
• 2008 Scion tC Base / Spec Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated
• 2009 Scion tC Base Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated
• 2010 Scion tC Base Coupe 2-Door 2.4L 2362CC l4 GAS DOHC Naturally Aspirated

The Scion Tuner Caliber

Engineered to deliver clean combustion and crisp throttle response, this kit restores crisp power delivery and reliable rev-happy performance to your daily driver or weekend build without throwing check engine lights.