X4XZ UF504 Ignition Coils + 3381 Double Iridium Spark Plugs — 05-15 Chrysler 300, Challenger, Charger, Durango & More

Premium UF504 ignition coils with 3381 double iridium spark plugs

This comprehensive replacement kit combines UF504 ignition coils with 3381 double iridium spark plugs to cover a wide range of Dodge, Chrysler, and Jeep vehicles from 2005 to 2015. The bundle includes eight coil packs and sixteen iridium spark plugs, designed to deliver consistent spark under varied driving conditions and heat cycles. It is a practical option for owners looking to refresh a V8 setup without juggling multiple parts from different suppliers.

What’s in the kit

• Ignition coil packs x8, built to endure heat and vibration across daily driving and spirited accelerations.
• Double iridium spark plugs x16, chosen for stable, enduring ignition performance.
• OE references: UF504 and 3381 family; replacement compatibility spans multiple years and models.
• Note: Instruction manual not included; designed for installers with reasonable experience in ignition components.

Key benefits you might notice

• Quieter cold starts and smoother idle through steady voltage delivery to plugs.
• Potential improvements in throttle response and overall drive feel under everyday use.
• Improved combustion stability under heat and load, which can support efficient operation when combined with proper maintenance.
• Reduced misfire symptoms and hesitation in demanding driving scenarios.

Quality and construction you can rely on

The coil assembly features a stainless-steel spring and an internal ferrite noise suppressor to minimize radio frequency interference, while the thermoplastic coil connector resists heat and thermal cycling. The double iridium plugs offer long-life wear resistance thanks to a robust iridium tip, designed for durable performance across many miles.

Compatibility and installation notes

OE# UF504+3381 covers a broad set of Dodge, Chrysler, and Jeep V8 models from mid-2000s to mid-2010s, including Challenger, Charger, Durango, Magnum, Ram 1500/2500/3500, and Grand Cherokee variants. The kit is configured as a practical replacement set for experienced installers or confident DIY enthusiasts.

After-sales support

We provide 24-hour customer service and a 1-year product service window. For installation questions or product issues, you may contact us for prompt assistance.