Ignition Coil and Iridium Spark Plugs for Honda Accord (2008-2012) 3.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2008-2012 Honda Accord 3.5L

What it Does: Restores factory ignition energy, resolves multi-cylinder misfires, and stabilizes engine idle across all six cylinders on J-series V6 engines.

The Stock Accord J-Series Ignition Breakdown

The factory ignition coils and plugs on the Honda J35 engine endure extreme thermal cycling, exacerbated by the Variable Cylinder Management (VCM) system shutting down rear cylinder banks. Over time, OEM coil boots degrade from high underhood temperatures, leading to internal copper winding insulation breakdown, micro-arcing, and secondary voltage leakage. Combined with worn spark plug gaps and carbon fouling, this causes rough idling, hesitation under load, diminished throttle response, and catalyst-damaging misfire codes (P0300-P0306).

The Engineering Solution

This complete 12-piece overhaul kit includes six heavy-duty ignition coil-on-plug assemblies and six matched fine-wire iridium spark plugs. The ignition coils feature premium internal electrolytic copper windings paired with high-dielectric epoxy potting to eliminate high-voltage breakdown and resist thermal fatigue. Matched with high-melting-point iridium center electrodes and direct-fit blade terminal connectors, this system ensures immediate arc initiation, precise burn efficiency, and dependable combustion stability under aggressive load conditions.

Technical Specifications

Compatibility

• 2008-2012 Honda Accord EX 3.5L V6 (Sedan & Coupe)
• 2008-2012 Honda Accord EX-L 3.5L V6 (Sedan & Coupe)

The Honda Standard

Engineered to meet the exact electrical and operational parameters of Honda's VTEC powertrain, this ignition kit eliminates check engine lights, restores lost torque, and ensures crisp high-RPM performance.