Ignition Coil and Iridium Spark Plugs for Chevrolet Impala (2014-2019) 2.5L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2014-2019 Chevrolet Impala

What it Does: Restores factory ignition performance and stable combustion to eliminate hesitation, rough idling, and misfire trouble codes across the entire RPM range.

The Stock Impala Ignition Degradation

Subjected to high under-hood heat cycles and elevated cylinder pressures inherent to direct-injection engines, the factory coil-on-plug assemblies suffer from thermal insulation breakdown and dielectric failure. Over time, internal windings develop high resistance and plug boots deteriorate, resulting in weak spark energy, intermittent P0300 through P0304 DTCs, unburned hydrocarbon emissions, and reduced fuel efficiency.

The Engineering Solution

This direct-fit ignition kit supplies four precision-wound coil packs engineered with high-grade internal copper wiring, resilient epoxy encapsulation, and heat-resistant silicone boots to resist thermal breakdown and arc-over. Paired with four fine-wire iridium spark plugs, this setup lowers voltage demand while resisting spark erosion, providing stable flame kernel propagation, crisp throttle response, and consistent cold starts.

Technical Specifications

Compatibility

• 2014 Chevrolet Impala (LS, LT) 2.5L L4 - Gas
• 2015 Chevrolet Impala (LS, LT) 2.5L L4 - Gas
• 2016 Chevrolet Impala (LS, LT) 2.5L L4 - Gas
• 2017 Chevrolet Impala (LS, LT) 2.5L L4 - Gas
• 2018 Chevrolet Impala (LS, LT) 2.5L L4 - Gas
• 2019 Chevrolet Impala (LS, LT) 2.5L L4 - Gas

The Chevrolet Reliability Standard

Designed to maintain OE electrical parameters and prevent false check-engine triggers, this service pack delivers reliable starting power, quiet operation, and long-term durability for heavy daily commuting.