Ignition Coil & Iridium Spark Plugs for Acura RL (2009-2012) 3.7L V6

High-Output Ignition Coil & Iridium Spark Plugs for 2009-2012 Acura RL (J37A2 / KB2)

What it Does: Replaces failing OEM ignition components to restore optimal spark timing, eliminate misfires, and stabilize idle across the RPM range.

The Stock RL Ignition Fade Problem

Over time, the factory J37A2 ignition coils degrade due to extreme heat cycling from the cylinder heads. The J-series V6 engine architecture naturally traps heat near the coil pack boots, causing the internal epoxy winding insulation to break down over successive drive cycles. This thermal degradation leads to voltage leaks, weak spark generation, and increased resistance. In tandem, standard spark plug electrodes wear down, widening the plug gap and forcing the compromised coils to work harder. Drivers typically experience this as rough idling, sluggish throttle response under load, hesitation during VTEC engagement, and intermittent P0300-series misfire codes.

The Engineering Solution

This kit combines direct-replacement, high-output ignition coils with performance iridium spark plugs to permanently resolve thermal degradation and weak spark issues. The coils feature upgraded copper wiring and high-dielectric epoxy within a reinforced polymer housing, ensuring maximum voltage transfer to the plug while resisting high-engine-bay temperatures. The included iridium spark plugs utilize an ultra-fine center electrode, requiring less voltage to fire while offering superior melting point characteristics compared to traditional copper or platinum plugs. This synergy reduces the electrical load on the primary ignition system, promotes complete combustion of the fuel-air mixture, and immediately restores factory throttle response, fuel efficiency, and overall J37 V6 reliability.

Technical Specifications

Compatibility

• 2009 Acura RL 3.7L V6
• 2010 Acura RL 3.7L V6
• 2011 Acura RL 3.7L V6
• 2012 Acura RL 3.7L V6

The Acura Precision Standard

Delivering consistent, reliable spark is critical for maintaining the renowned refinement and power delivery of this JDM luxury sedan, ensuring your J-series engine pulls cleanly to redline without hesitation or CELs.