Ignition Coil & Iridium Spark Plugs for Acura TSX (2010-2014) 3.5L V6

High-Output Ignition Coil & Iridium Spark Plug Kit for 2010-2014 Acura TSX (J35Z6 / CU4)

What it Does: Replaces degrading factory ignition components to restore optimal spark energy, smooth out idle, and prevent engine misfires under heavy load.

The Stock TSX Ignition Degradation

As the J35Z6 engine ages, the factory ignition coils frequently suffer from thermal breakdown and internal resistance degradation due to continuous exposure to engine bay heat soak. This thermal cycling attacks the epoxy potting inside the coil housing, leading to micro-cracks that allow voltage to leak to the cylinder head rather than firing across the spark plug gap. Simultaneously, standard spark plug electrodes wear down over tens of thousands of miles, widening the gap and requiring significantly higher voltage to ignite the cylinder. This combined deterioration forces the ECU to pull timing, resulting in sluggish throttle response, rough idling, dreaded misfire codes (P0300 through P0306), and compromised fuel efficiency.

The Engineering Solution

This comprehensive kit addresses high-mileage ignition failures by pairing updated direct-replacement ignition coils with performance-grade iridium spark plugs. The redesigned coil packs feature upgraded internal copper windings and high-dielectric epoxy that actively resists thermal shock, ensuring consistent primary to secondary spark delivery even under severe operating temperatures. High-temperature silicone boots prevent moisture intrusion and eliminate secondary voltage arcing. The included iridium spark plugs utilize an ultra-fine center electrode, requiring less voltage to generate a spark while delivering a highly concentrated, hotter flame kernel. This optimized setup promotes complete combustion of the air-fuel mixture, restoring factory power output, eliminating acceleration hesitation, and providing long-term reliability.

Technical Specifications

Compatibility

• 2010 Acura TSX 3.5L V6
• 2011 Acura TSX 3.5L V6
• 2012 Acura TSX 3.5L V6
• 2013 Acura TSX 3.5L V6
• 2014 Acura TSX 3.5L V6

The Acura Precision Standard

Engineered to meet the stringent demands of modern Honda/Acura J-Series V6 platforms, this kit ensures precise timing and consistent voltage delivery. Maintain OEM-level drivability and smooth power delivery without triggering frustrating Check Engine Lights (CEL).