KacuYelin UF491 Ignition Coil Pack & Iridium Spark Plugs Set of 4 — 2.2L/2.4L GM Fit, OEM Replacement

When an engine misfires, hesitates, or drinks more fuel than it should, the problem often lies in aging coils or worn spark plugs. This KacuYelin UF491 kit combines four precision-matched ignition coils with four high-grade iridium plugs engineered to meet replacement specifications for a wide range of GM compact and midsize models from 2005–2017. The components are built in TS16949-capable facilities using corrosion-resistant materials and high-temperature ceramics so you get a repeatable spark and straightforward, bolt-on installation.

Will these coils and plugs fit my specific Chevy, GMC, Buick or related model?

Compatibility covers many GM 2.2L and 2.4L inline-4 engines across several model years. Always use your vehicle year, model, engine size and submodel when confirming fit to avoid mismatches. The kit is designed to replace common OE references and plug directly into factory harnesses for most listed vehicles.

• Compatible with Chevy: Captiva Sport 2012–2015, Cobalt 2006–2010, Equinox 2010–2017, HHR 2006–2011, Malibu 2007–2014, Orlando 2012–2014, and others.
• Compatible with GMC Terrain 2010–2017 (2.4L L4).
• Compatible with Buick models including LaCrosse, Regal, Verano (2010–2017 where specified).
• Replaces OE numbers such as UF-491, 12638824, 5C1609 and similar references listed by manufacturers.

How do these ignition coils improve engine performance and reliability?

KacuYelin coils use high-purity copper windings and a silicon steel core encapsulated in high-temperature epoxy to maintain consistent high-voltage output. That stability reduces misfires and ignition failure caused by degraded coils and helps the ignition system deliver a more complete combustion event under load or at idle.

• German-imported copper windings and corrosion-resistant materials for durable high-voltage output.
• Epoxy and thermal materials designed to withstand engine bay temperatures and vibration.
• Manufactured to match OEM electrical and physical dimensions for plug-and-play replacement.

What advantages do the iridium spark plugs in this set offer over standard plugs?

The included iridium plugs combine a fine-tipped center electrode and advanced ceramic insulators to produce a focused, durable spark and longer service intervals. Their construction reduces electrode wear and carbon buildup, which helps preserve ignition quality and can support improved fuel economy.

• 360° laser-welded center electrode for concentrated spark energy and durability.
• High-nickel content and corrosion-resistant plating to extend life toward 60,000–100,000 miles.
• High-purity alumina ceramic insulator for thermal stability and strong insulation.

How easy is installation and what should I prepare before replacing parts?

Installation is typically straightforward for anyone familiar with basic engine maintenance; the kit is engineered to match OEM connectors and mounting points. Still, gather simple hand tools, a torque wrench, and follow your vehicle’s service manual torque and gap specifications for a safe job.

• Direct bolt-in coils and threaded plugs that match original dimensions for many GM L4 engines.
• Recommended: confirm engine type, clear engine bay access, and use correct torque settings for spark plugs.
• Inspect wiring harnesses and connectors for damage before fitting new coils to ensure reliable connection.

Who is this for: This KacuYelin UF491 coil pack and iridium spark plug set is intended for owners and independent mechanics who need a cost-effective, OEM-matching replacement for GM 2.2L–2.4L engines in compact and midsize cars and crossovers. Choose this kit if you want durable materials, longer plug life, and a straightforward plug-and-play swap to resolve misfires, poor throttle response, or increased fuel use.