Ignition Coil and Iridium Spark Plugs for Acura TSX (2009-2014) 2.4L

High-Output Ignition Coil and Iridium Spark Plug Kit for 2009-2014 Acura TSX

Complete Ignition Service Solution: Replaces degraded factory secondary ignition components to restore consistent high-voltage spark delivery, smooth idle stability, and crisp throttle response across the entire RPM band.

The Stock TSX Ignition Degradation

In the high-heat cylinder head cavity of the 2.4L K-series platform, factory ignition coil-on-plug packs undergo severe thermal cycling. Over time, internal epoxy insulation breaks down and lower boot silicone hardens, creating micro-fractures that induce dielectric voltage leakage and secondary arc-over. Combined with worn spark plug electrode gaps, this deterioration results in high-RPM spark blowout during i-VTEC engagement, sluggish transient response, unburned hydrocarbons, and P0300–P0304 cylinder misfire fault codes.

The Engineering Solution

This direct-replacement kit resolves secondary ignition drop-off by pairing heavy-duty coil packs with fine-wire iridium spark plugs. The coil assemblies are engineered with high-conductivity electrolytic copper primary and secondary windings potted in high-dielectric epoxy, ensuring maximum resistance to heat soak and internal arc-through. Direct-fit blade terminals and factory-matched electrical connectors eliminate signal resistance. The companion iridium spark plugs feature high-melting-point fine-wire center electrodes that require lower strike voltage, promoting rapid flame kernel growth and preventing carbon fouling under variable valve timing transitions.

Technical Specifications

Compatibility

• 2009 Acura TSX: 2.4L L4 Gas DOHC (Base)
• 2010 Acura TSX: 2.4L L4 Gas DOHC (Base)
• 2011 Acura TSX: 2.4L L4 Gas DOHC (Base, Sport Wagon)
• 2012 Acura TSX: 2.4L L4 Gas DOHC (Base, Special Edition, Sport Wagon)
• 2013 Acura TSX: 2.4L L4 Gas DOHC (Base, Special Edition, Sport Wagon)
• 2014 Acura TSX: 2.4L L4 Gas DOHC (Base, Special Edition, Sport Wagon)

The Acura Performance Caliber

Engineered to meet tight tolerances for high-revving Japanese powertrains, this complete ignition package maintains linear dwell times and uninterrupted spark energy all the way to the 7,100 RPM redline, preserving stoichiometric fuel trim balance and factory-calibrated power delivery.