Ignition Coil & Iridium Spark Plugs for Buick Lucerne (2009-2011) 3.9L V6

Direct-Replacement Ignition Coil & Iridium Spark Plugs for 2009-2011 Buick Lucerne

Restores proper engine firing order and combustion efficiency to eliminate misfires. This complete ignition overhaul kit replaces degraded factory coils, wires, and plugs to ensure consistent spark delivery, smoother idle, and optimal fuel economy for the 3.9L V6.

The Stock Lucerne Ignition Degradation

Over time, the factory ignition components on the GM High Value 3.9L V6 suffer from severe thermal cycling and constant exposure to engine bay heat. This environment accelerates the breakdown of the internal epoxy potting within the OEM ignition coil pack, leading to micro-cracking and secondary voltage leaks. Simultaneously, standard copper or platinum spark plugs experience electrode erosion, increasing the spark gap beyond factory specifications. As the resistance builds in worn, heat-cycled spark plug wires, the coil must work harder to jump the gap. This cascading failure results in dreaded P0300 random misfire codes, rough idling, delayed throttle response, and unburned fuel saturating the catalytic converters.

The Engineering Solution

This comprehensive tune-up kit resolves voltage loss by utilizing an upgraded ignition coil pack wound with premium, high-conductivity copper wire and insulated with heavy-duty dielectric epoxy to resist heat soak and vibration. The included Iridium-tipped spark plugs require significantly less firing voltage than traditional plugs, offering a highly concentrated spark that maximizes combustion efficiency while providing exceptional resistance to electrode wear over high mileage. Paired with low-resistance, silicone-jacketed spark plug wires that suppress EMI/RFI interference, this system delivers maximum voltage directly to the combustion chamber. The result is a stabilized spark curve, restored horsepower, and reliable ignition under all engine loads.

Technical Specifications

Compatibility

• 2009 Buick Lucerne 3.9L V6
• 2010 Buick Lucerne 3.9L V6
• 2011 Buick Lucerne 3.9L V6

The Buick Highway Standard

Engineered to meet or exceed OEM specifications, this complete ignition service kit ensures your Lucerne maintains the smooth, quiet, and reliable highway cruising dynamics that a premium full-size sedan demands, keeping the check engine light off and the engine running flawlessly.