Ignition Coil and Iridium Spark Plugs for Buick Encore (2016-2022) 1.4L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2016-2022 Buick Encore

What it Does: Replaces fatigued factory ignition coils and worn plugs to eliminate high-boost spark blowout, restore combustion efficiency, and resolve cylinder misfire diagnostic trouble codes on the 1.4L Turbo engine.

The Stock Encore Ignition Breakdown

The compact turbocharged engine bay of the Gamma II platform experiences elevated underhood temperatures. Over time, thermal cycling degrades the OEM coil pack's dielectric epoxy, causing internal copper winding insulation breakdown and high-voltage secondary leakage. Simultaneously, factory spark plug gap erosion increases the required breakdown voltage, leading to severe cold-start hesitation, rough idle, unburned hydrocarbon buildup, and recurring P0300–P0304 misfire codes under load.

The Engineering Solution

This ignition service pack features four direct-fit coils built with high-grade copper windings and vacuum-potted, high-insulation epoxy housed in impact-resistant, dielectric PBT polymer. These assemblies resist thermal cracking and deliver consistent peak milliamp energy output. Paired with fine-wire iridium spark plugs, the low-voltage arc threshold ensures immediate ignition kernel formation, optimal flame kernel propagation under boost, and sustained electrode life across harsh daily operating cycles.

Technical Specifications

Compatibility

• 2016-2022 Buick Encore 1.4L Turbo L4 (Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring)

The Buick Reliability Caliber

Engineered for OE-standard electrical integration, this kit delivers complete plug-and-play fitment without harness modifications, preventing false knock detection and ensuring consistent cold-weather dependability and smooth idle characteristics for your daily commute.