Ignition Coil and Iridium Spark Plugs for Chevrolet Volt (2013-2015) 1.4L

Direct-Fit Ignition Coil Rail and Iridium Spark Plug Kit for 2013-2015 Chevrolet Volt

What it Does: The Ignition Coil and Iridium Spark Plug Kit replaces degraded ignition components on the 2013-2015 Volt to eliminate engine misfires, restore ignition energy, and maintain proper range-extender thermal efficiency.

The Stock Chevrolet Volt Coil Cassette Heat Degradation

On the GM Delta II platform, the 1.4L LUU range-extender engine houses all four ignition leads inside a single coil cassette rail. Mounted directly above the valve cover in an enclosed compartment, this factory coil pack suffers severe thermal degradation. Over sustained thermal cycling, the internal epoxy potting cracks, causing dielectric breakdown and voltage arcing to the spark plug wells. Degraded boots and high internal winding resistance manifest as random misfires (DTC P0300 through P0304), rough cold-engine generator engagement, and unburned fuel entering the catalytic converter.

The Engineering Solution

This replacement ignition assembly is engineered with high-dielectric epoxy resin and reinforced secondary copper windings to resist insulation breakdown under heavy continuous electrical loads. Reinforced silicone plug boots provide a moisture-tight barrier against high-voltage flashover. Paired with fine-wire iridium spark plugs, this kit drastically reduces required firing voltages while maximizing flame kernel expansion. Laser-welded iridium center electrodes withstand arc erosion, ensuring consistent gap retention, lower primary coil amp draw, and complete fuel atomization during hybrid power generation.

Technical Specifications

Compatibility

• 2013 Chevrolet Volt Base Hatchback 1.4L L4 Electric/Gas (LUU)
• 2014 Chevrolet Volt Base Hatchback 1.4L L4 Electric/Gas (LUU)
• 2015 Chevrolet Volt Base Hatchback 1.4L L4 Electric/Gas (LUU)

Frequently Asked Questions

Does this fit the Delta II Volt?
Yes, this is a direct fit for the 2013-2015 Chevrolet Volt equipped with the LUU engine.

Are the iridium spark plugs pre-gapped for the 1.4L engine?
Yes, the spark plugs are pre-set to factory specifications, though verifying gap clearance before installation is always standard practice.

The Chevrolet Hybrid Efficiency Caliber

Maintaining precise ignition voltage in extended-range hybrid powertrains is critical for emissions compliance and seamless internal combustion engine engagement during high-load battery recharge cycles.