Ignition Coil and Iridium Spark Plugs for Hyundai Equus (2012-2016) 5.0L

Direct-Replacement Ignition Kit for 2012-2016 Hyundai Equus

What it Does: Restores factory secondary ignition output and combustion efficiency across all eight cylinders to eliminate misfires, rough idle, and unburned fuel buildup.

The Stock Equus Thermal Degradation and Misfire Issues

The 5.0L Tau V8 engine bay generates substantial heat under load, accelerating thermal breakdown in the factory coil-on-plug boots and internal insulation windings. Over time, high operating temperatures cause dielectric breakdown within the primary and secondary copper windings, leading to micro-arcing, intermittent secondary circuit resistance, and erratic spark delivery under heavy throttle. Paired with aged spark plugs experiencing enlarged electrode gaps, this deterioration manifests as high-load misfire codes (P0300-P0308), compromised fuel economy, and degraded idle smoothness.

The Engineering Solution

This comprehensive service pack includes eight high-output ignition coil assemblies and eight precision-gapped iridium spark plugs engineered to factory tolerances. Built with premium-grade magnetic core copper windings and heavy-duty epoxy resin, the coil packs resist thermal cycling and dielectric breakdown. The fine-wire iridium spark plugs feature high melting points to resist electrode erosion, providing consistent arc voltage, sharp flame kernel development, and precise combustion under high compression.

Technical Specifications

Compatibility

• 2012 Hyundai Equus Signature / Ultimate 5.0L V8
• 2013 Hyundai Equus Signature / Ultimate 5.0L V8
• 2014 Hyundai Equus Signature / Ultimate 5.0L V8
• 2015 Hyundai Equus Signature / Ultimate 5.0L V8
• 2016 Hyundai Equus Signature / Ultimate 5.0L V8

The Hyundai Luxury Caliber

Engineered to preserve the refined V8 operation expected of a flagship luxury sedan, this direct-fit ignition kit ensures zero CEL occurrences, instantaneous throttle response, and smooth power delivery throughout the entire rev range.