Ignition Coil & Iridium Spark Plugs for Buick Allure LaCrosse (2010-2016) 3.0L 3.6L V6

Direct Replacement Ignition Coil & Iridium Spark Plugs for 2010-2016 Buick LaCrosse (HFV6 / Epsilon II)

A complete direct replacement ignition service kit designed to restore optimal combustion and eliminate misfire conditions in the 3.0L and 3.6L High Feature V6 engines.

The Stock LaCrosse Ignition Degradation

Over time, the High Feature V6 engines (LFX/LLT/LF1) are notorious for accelerated thermal stress on the factory ignition coils due to their proximity to the cylinder heads and trapped under-hood heat. This continuous heat soak leads to micro-cracking in the epoxy resin of the coil housing, causing voltage leaks, erratic idle, and partial-throttle misfires. Additionally, standard or aging spark plugs degrade under high-compression conditions, widening the spark gap. This directly stresses the already fatigued coils by requiring higher voltage to bridge the gap, ultimately resulting in poor fuel efficiency, delayed throttle response, and pending P0300-series diagnostic trouble codes.

The Engineering Solution

This comprehensive ignition overhaul kit addresses the thermal fatigue issues of the Epsilon II chassis by utilizing upgraded construction materials. The replacement ignition coils feature high-temp epoxy resin and advanced copper wire windings to optimize the primary-to-secondary voltage transformation, ensuring consistent spark delivery even under extreme engine bay temperatures. Coupled with precision-gapped Iridium spark plugs, this kit provides a highly focused, fine-wire center electrode that requires less voltage to bridge the spark gap. The ultra-hard Iridium tip inherently resists erosion from spark degradation and chemical corrosion within the combustion chamber, significantly improving flame kernel growth, stabilizing idle parameters, and restoring lost power and fuel economy over an extended service interval.

Technical Specifications

Compatibility

• 2010 Buick Allure 3.0L V6
• 2010 Buick Allure 3.6L V6
• 2010 Buick LaCrosse 3.0L V6
• 2010 Buick LaCrosse 3.6L V6
• 2011 Buick LaCrosse 3.6L V6
• 2012 Buick LaCrosse 3.6L V6
• 2013 Buick LaCrosse 3.6L V6
• 2014 Buick LaCrosse 3.6L V6
• 2015 Buick LaCrosse 3.6L V6
• 2016 Buick LaCrosse 3.6L V6

The Buick Caliber

Maintaining proper ignition health ensures smooth power delivery and prevents unburnt fuel from damaging the catalytic converters, maintaining the refined driveability and silent idle expected from this modern luxury sedan chassis.