Ignition Coil and Iridium Spark Plugs for Acura TSX (2004-2008) 2.4L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2004-2008 Acura TSX

What it Does: Restores peak ignition energy and stabilizes secondary voltage output to eliminate misfires, hesitation, and spark blowout across the entire rev range.

The Stock TSX Ignition Breakdown

As the high-revving K24A2 engine ages, repetitive thermal cycling severely degrades factory coil pack windings and hardens the dielectric silicone boots. This deterioration causes internal resistance spikes, micro-arcing, and voltage leakages directly to the cylinder head rather than the plug gap. Combined with electrode erosion on aged spark plugs, this secondary breakdown results in P0300-P0304 misfire codes, rough cold-start idling, sluggish throttle tip-in, and lost high-RPM combustion stability near the VTEC crossover.

The Engineering Solution

This comprehensive ignition service kit features heavy-duty coil packs constructed with high-purity copper windings, high-dielectric epoxy potting, and reinforced heat-resistant silicone boots rated past 180°C. Matched with fine-wire laser-welded 0.6mm iridium center-electrode spark plugs, the system reduces overall ignition system voltage demand while maximizing spark kernel propagation. The result is rapid flame-front expansion, optimized fuel burn, and consistent spark delivery up to the factory 7,100 RPM redline.

Technical Specifications

Compatibility

• 2004 Acura TSX Base Sedan 2.4L L4 (K24A2 / CL9)
• 2005 Acura TSX Base Sedan 2.4L L4 (K24A2 / CL9)
• 2006 Acura TSX Base Sedan 2.4L L4 (K24A2 / CL9)
• 2007 Acura TSX Base Sedan 2.4L L4 (K24A2 / CL9)
• 2008 Acura TSX Base Sedan 2.4L L4 (K24A2 / CL9)

The Acura K-Series Standard

Designed to satisfy the high-strung ignition demands of high-compression Honda/Acura VTEC powertrains, this direct-fit kit delivers crisp throttle response, clean combustion, and maximum power delivery without compromise.